Krell Industries EVOLUTION TWO MONAURAL PREAMPLIFIER User Manual

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Page 1

EVOLUTION

EVOLUTION TWO

MONAURAL PREAMPLIFIER

OWNER’S REFERENCE

Page 2

Evolution Two Monaural Preamplifier Owner’s Reference, v05.0

Krell Industries, Inc. 45 Connair Road Orange, CT 06477-3650 USA

TEL 203-799-9954 FAX 203-891-2028 E-MAIL Krell@krellonline.com WEBSITE http://www.krellonline.com

This product complies with the EMC directive (89/336/EEC) and the low-voltage directive (73/23/EEC).

WARNINGS

The Evolution Two preamplifier must be placed on a firm, level surface where it is not exposed to dripping or splashing.

The ventilation grids on the top of the Evolution Two preamplifier and the space underneath the Evolution Two preamplifier must be unobstructed at all times during operation. Do not place flammable material above or beneath the preamplifier.

e making connections to the Evolution Two preamplifier, ensure that the power is off and other

Befor components ar

e in mute or stand-by mode. Make sure all cable terminations are of the highest quali-

ty, free from frayed ends, short circuits, or cold solder joints. Do not connect an RS-232 cable to the phono power port. Output from the phono power port can

seriously damage your computer. Do not connect the cable from a Krell KPE phono stage to the RS-232 por

TS INSIDE AN EVOLUTION TWO MONAURAL

THERE ARE NO USER SER

VICEABLE P

PREAMPLIFIER.

Please contact Krell if you have questions not addressed in this guide.

oduct is manufactur

This pr by Krell Industries, Inc., its subsidiaries, and authorized agents. Evolution Bias based on U.S. Patent No. 5,331,291. CAN Link Inc. All other trademarks ar

ell Industries, Inc. All rights r

ed in the United States of America. Kr

™, CAST™, Evolution CAST™, and Kr

e r

egister

ed to their r

espective companies.

eserved P/N 307773

ell

is a r

ed trademark of Kr

egister

™ is a trademark of Krell Industries, Inc. and is a Krell technology

ell Cur

rent Mode

ell Industries, Inc., and is r

e trademarks of Kr

™ ar

estricted for use

ell Industries,

Page 3

Contents

List of Illustrations, page iv

A Letter from Dan D’Agostino, page 1

SECTION ONE: About Krell, page 3

The Kr Ensuring Maximum Per

ell Legacy, Revolutionary Krell CAST Technology,

formance, Definition of Terms

SECTION

SECTION THREE: Quick Start, page 13

SECTION FOUR: Anatomy of an Evolution Two, page 15

SECTION FIVE: Connecting the Evolution Two to Your System, page 26

SECTION SIX: Evolution Two Operation, page 29

SECTION SEVEN: Customizing the Evolution Two, page 32

TWO: Unpacking and Placement, page 11

Opening the Evolution Two Shipping Carton

Connecting the Evolution to Your System, Operating the Evolution Two

Front Panel Description, Remote Control Description, and Back Panel Description

Input and Output Connections, Connection Steps, Connections Using CAN Link

On/Off and Stand-by Operation, Play and Record, Operation Using CAN Link

Navigation Conventions, Menu Functions

SECTION EIGHT: Questions and Answers, page 49

Troubleshooting System Noise

APPENDIX:

ARRANTY

RETURN AUTHORIZATION PROCEDURE, page 55

SPECIFICA

CAN Link and Multiple Evolution Two Preamplifiers, page 51

, page 53

TIONS, page 56

iii

Page 4

List of Illustrations

Figure 1, page 15

Evolution Two Preamplifier Chassis and Power Supply Chassis Front Panels

Inset Evolution Two Preamplifier Channel: Front Panel View

Figure 2, page 16

Evolution T

Figure 3, page 22

Evolution Two Preamplifier Chassis and Power Supply Chassis Back Panels

wo Remote Control

Page 5

A Letter from Dan D’Agostino

Dear Audio Enthusiast,

Thank you for your purchase of the Evolution Two preamplifier.

My new Evolution products represent a watershed in my design philosophy and in my quest for audio components that deliver absolute tr The expanse of the Evolution T fully the advantages of current mode topologies. The resulting circuit utilizes no feedback and has a bandwidth of 2 MHz.

I have always been fascinated by the artistry inherent in great musical performances, and my new Evolution Two preamplifier delivers the these performances in their entirety, unaltered, to the amplifier. At the same time, the Evolution Two preamplifier provides the flexibility and control necessary for the listener to thoroughly enjoy a high performance audio system. It is my pleasure to make the Evolution products available to you.

The preamplifier plays a vital role in audio playback. At no other point in the reproduction process is the music so vulnerable to change. The signal level at the preamplifier stage is small, and is particularly susceptible to noise and distortion. In order to solve this problem, the Evolution Two employs Krell Current Mode gain stages from input to output, and Current Audio Signal Transmission (CAST) receivers and transmitters. Unprecedented in Krell design history, these unique topologies combine in the Evolution Two preamplifier to form a circuit that has no audible sonic signature.

wo monaural design has allowed me to explore

uth in music reproduction.

The Evolution Series represents a new direction for Krell, where breakthrough circuit topologies also represent the vanguard in convenience and control. Sophisti-

y allows from two to eight preamplifiers to be linked

cated communication cir

cuitr

to a single master from which all user interface is accomplished. The Evolution

wo Monaural Pr

eamplifier is designed to complement per

Monaural Power Amplifier

. Combine the Evolution One and T

fectly the Evolution One

wo with my new LAT-1000 loudspeakers, and experience the extraordinary capabilities of an Evolution System.

continue

Page 6

(A Letter from Dan D’Agostino continued)

I have some exciting news for you. Work on a new source component for the Evolution Series is ongoing as of this writing. Possessed of the unique Evolution technologies that power the amplifier and preamplifier, this Evolution source will expose the real advantages of the latest recording formats while taking compact disc playback to the next level. I encourage you to audition it as soon as it is released.

ely,

Sincer

Daniel D’Agostino Chief Executive Officer

Page 7

SECTION ONE

About Krell

This section describes the Krell Legacy, the innovative features and technology of the Evolution Two, and defines CAST and other key terms used in this reference.

The Krell Legacy

“I design every Krell component to set the standard

for workmanship, style, and performance.”

High-end audio is a demanding pursuit—an ongoing quest for excellence in music reproduction that drives equipment manufacturers to strive for the absolute in design and performance. With a keen understanding of this passionate drive, Krell Industries, Inc., was founded in 1980.

Over the past 2-1/2 decades, Krell has earned a distinguished reputation for engineering innovation and product excellence. The company’s history is replete with product introductions that have deeply impacted the high-end audio industry. The most discriminating audiophiles and product reviewers have consistently recognized Krell components for standard-setting performance.

Dan D’Agostino

From the company’s inception to the present, Krell C.E.O. Dan D’Agostino has continually “pushed the envelope” of performance in audio. His exploration of new technologies, driven by his never-ending quest to elevate the standard of excellence, has resulted in breakthrough audio designs. Evolution Two preamplifiers build on this Krell legacy.

Dan D’Agostino remains committed to the development of new designs and technologies. And the Krell legacy will continue to evolve with products that deliver innovative engineering, perfection in build quality, and outstanding audio performance.

continue

Page 8

(SECTION ONE: About Krell continued)

Revolutionary Krell CAST Technology

Current Audio Signal Transmission, termed CAST, is a revolutionary method of connecting analog audio components for unparalleled sonic performance. Innovative engineering combines the new Krell CAST circuitry with existing Krell Current Mode technology to create entire CAST systems that reproduce music with incredible range, tonality, and precision.

The Voltage Signal Transmission and the Traditional Audio System

Traditionally, signal is transmitted in the voltage domain between two components. In an audio system, each component is a discrete entity with unique characteristics that act upon the musical signal independently. Each component is unaware of the other components in the system. The cables that connect the components also have their own electrical characteristics, which affect the sonic presentation of the entire system. CAST transmission unifies individual components and interconnects into an electrically linked whole. The original signal remains unaltered from source to speaker.

CAST Basics

Here is how a CAST audio system works. Internally, each CAST source transfers, or amplifies, current using Krell Current Mode circuitry. This current signal is then output using CAST circuitry. When the signal is received by a CAST input, Krell

ent Mode cir

Cur By maintaining the musical signal in the cur entire CAST system behaves as if it is one component. With CAST, circuit board

ties and signal transmission aber

oper

pr ed. Cable impedances and their ef

cuitry again takes over until the signal reaches the loudspeaker.

ent domain fr

rations between components ar

fects on the transmitted signal ar

om beginning to end, an

e eliminat

e non-existent.

How CAST and Krell Current Mode Interact

While CAST is a new method of transferring the musical signal between components, its origin stems from Krell Current Mode, the technology developed to

ent

transfer the musical signal within a component. CAST combined with Kr

y signal transmission to the next evolutionar

Mode takes cir

ell Current Mode maintains the integrity of the signal within the component and

cuitr

y level. In essence,

ell Cur

Page 9

CAST preserves the transmitted signal between components. Together, CAST and Krell Current Mode technologies unify separate Krell components into a

global circuit.

Krell Current Mode technology enjoys bandwidth increases up to an

single

order of magnitude greater than their voltage based counterparts. This dramatic increase in circuit bandwidth delivers near perfection in the audible band that typically suffers from phase distortions in voltage circuits.

CAST Cable Construction

A CAST system uses cables manufactured by Krell and other manufacturers specially licensed by Kr

ell. Thin and flexible CAST cables are constructed with the same build quality as other Krell components and are aesthetically matched to the components that Krell manufactures. An all-metal body and locking connectors with gold contacts are part of the standard no-compromise specification developed for every CAST cable made.

Evolution CAST

By employing radical current mirror circuitry, the Evolution components elevate the CAST technology to another level. This advanced use of the technology increases the linearity, transient speed, and bandwidth of the Evolution components while reducing the distortion by an order of magnitude.

The Best Musical Performance

When you operate a CAST system, you will hear significant improvements in every performance area: speed, precision, dynamic range, depth and width of the sound stage, transient impact, tonal balance, har

monic distor CAST is the same company goal used for all Krell products. Krell strives for the delivery of the best performance of a musical event for you, using the full expression of technology to date.

tion, and more. The goal for

continue

Page 10

(SECTION ONE: About Krell continued)

Ensuring Maximum Performance

“My pursuit of excellence in sound reproduction and my love of great musical performance fuels the ongoing Evolution design effort at Krell.”

Dan D’Agostino

oduct of breakthrough Krell technology, the Evolution Two Monaural

The pr Preamplifier works in tandem with the Evolution One Monaural Power Amplifier to provide a sound that is supremely dynamic and musical. Indeed, it is the sound of the music itself.

Core Technologies

Zero Feedback Balanced Current Mode Design

The signal path is fully complementary and fully balanced from input to output. All transistors operate in Class A mode. CAST inputs drive a newly designed currentmode balanced input stage, which uses a unique topology able to reject common-mode input noise over an unusually wide bandwidth.

Single-ended and balanced inputs drive a dynamically-cascoded JFET buffer, which has tremendous open-loop linearity and very high input impedance, to eliminate loading effects. The voltage signals are then converted into balanced current signals, the form in which they remain through the remainder of the signal path. The audio signal remains in the current domain throughout the entire preamplifier. Only at the single-ended and voltage outputs is it converted back to the voltage domain.

All signal gain is realized in the current domain using proprietary multiple-output current mirrors with nearly 500 times the open loop linearity of other designs.

eamplifier, nor is it

Negative feedback is not used anywher necessary. Open-loop distortion is typically less than 0.005% (50 parts per million), and the open loop bandwidth extends to two megahertz. The result is an extraor

The signal switching r contacts for maximum signal integrity. Where needed multiple relays are connected in a “T” configuration to vir The volume setting can be adjusted and displayed either numerically 151, or in dB, from –inf to +12.0 dB.

dinarily wide and deep image, with an open, ef

elays ar

e hermetically sealed and use gold-plated bifurcated

tually eliminate cr

e in the Evolution T

osstalk fr

wo pr

tless sound.

for

om unselected inputs.

, from 0 to

Page 11

Fully Balanced Discrete Volume Control

The volume control is realized with a 16-bit balanced resistor ladder, which uses low-resistance, high-linearity solid-state switches and discrete precision resistors. Control signals for the switches are optically coupled for low noise and maximum signal integrity. The bandwidth and transient response of the preamplifier circuitry are virtually unaffected by the volume setting. As a result high frequencies sound especially smooth and extended, and music seems to emerge from “jet black” silence. The analog and digital signal paths are not interconnected. Where necessary, digital control signals are optically coupled to analog circuits.

The Evolution Two has two buffered tape outputs: one linked to the main signalselection bus, and another with its own independent signal-selection bus. This allows the option of listening to one source while recording another, or the option of connecting two tape decks having different input signals. Both tape outputs have single-ended and voltage outputs. Either the fourth single-ended input or the third balanced input can be user-configured as a tape monitor input, allowing the opportunity to use home or professional recording equipment.

Separate Power Supply

Housed in a separate chassis, the power supply makes use of extensive electrical and magnetic shielding to keep radiated interference out of critical preamplifier circuits. Internal line conditioning circuitry filters RF noise on the AC power, and compensates for asymmetric power waveforms and DC on the mains.

Power for the analog stages comes from a large 170 VA toroidal transformer. This transformer drives four 8-amp bridge rectifiers and 39,600 microfarads of filter capacitance. Each monaural preamplifier has as much power supply capability as many ster

eo power amplifiers.

The main regulators for the analog stages are scaled-down versions of those used

ent

to power the output stages of the Evolution One amplifier mode, with fully complementar

y gain stages and output drivers, wide bandwidth,

. Operating in cur

low output impedance, and high current capability, the main regulators easily

ements of the analog stages. The driver and output stages in the

exceed the r main analog r

equir

egulators use five pairs of 150 V

olt, 8 Amp, 40 megaher

tz power

transistors.

A dedicated 90 VA toroidal transformer with three independent secondary windings powers the preamplifier's digital control circuitry. The regulators for the con-

continue

Page 12

(SECTION ONE: About Krell continued)

(Separate Power Supply continued)

trol circuitry team ultra-stable voltage reference chips with the same discrete highcurrent driver and output transistors used in the main analog regulators. These ample power reserves are brought to the Evolution Two via high reliability 12-pin connectors with machined, gold plated, three-amp contacts.

Secondary voltage regulators for each analog stage in the Evolution Two provide ultra-quiet, rock-solid supply rails, as well as complete isolation between all the analog stages.

When the Evolution Two is placed in stand-by, all the analog circuitry continues to operate at the same bias current; however, the main analog supply voltages decrease by 30 percent. The result is a corresponding 30 percent reduction in power consumption and heat without the need to wait for the electronics to “warm up” before listening.

Advanced Microprocessor Control and Custom Software

A user menu allows extensive customization of the preamplifier operation, including (but not limited to) input names, input-specific gain trims, Theater Throughput™, display brightness, and 12-volt triggers. Integration is supported via RS232,12 Volt trigger, and RC-5 inputs, as well as an IR transmitter for programming a learning remote control.

A built-in digital network allows multiple preamplifiers to be linked together, blending the convenience of a single-chassis stereo preamplifier with the sonic performance obtainable only from individual monaural preamplifiers. Six or more preamplifier channels can be “daisy-chained” together and controlled simultaneously for multi-zone or home theater applications. The digital link allows the user settings in one preamplifier channel to be conveniently “cloned” to other linked preamplifier channels. Similarly, upgraded software in one preamplifier channel can be installed in other preamplifier channels using the digital link.

In the event that the DC level at any of the preamplifier channel outputs exceeds a

y safely mutes the outputs, traces

nominal level, sophisticated pr the sour

ce of the excess DC, and displays a diagnostic message on the main dis

otection cir

cuitr

play. On power-up, the microprocessor verifies that all the circuit boards in the

eamplifier channel ar

pr of softwar

e installed.

operly connected and ar

e pr

e compatible with the version

Page 13

Definition of Terms

Following are the definitions of key terms used in this owner’s reference.

Configurations

CAN Link

The communication system that links multiple Evolution Two preamplifier channels is a sophisticated system called a controller area network (CAN).

Linked Mode

In linked mode, functions including power, volume, balance, phase, record, mute, and input selections are instantaneously transmitted between linked preamplifier channels. Evolution Two preamplifiers use CAN Link to operate in linked mode.

Clone

A method of transmitting custom configurations between linked preamplifier channels.

Inputs and Outputs

Balanced

A symmetrical input or output circuit that has equal impedance from both input terminals to a common ground reference point. The industry standard for professional and sound recording installations, balanced connections have 6 dB more gain than single-ended connections and allow the use of long interconnect cables. Balanced connections are completely immune to induced noise from the system or the environment.

CAST and Evolution CAST

Krell Current Audio Signal Transmission, or CAST, is a proprietary Krell circuit technology for connecting analog components, transmitting the audio waveform between components in the current domain rather than in the voltage domain. The speed and bandwidth provided by Krell CAST and its circuitry update, Evolution CAST, yield accurate, realistic music reproduction, enabling connected components to perform as if they are all part of a single circuit.

Single-ended

A two-wire input or output circuit. Single-ended connections are not recommended for connections requiring long cable runs. Use care when using single-ended connections, because the ground connection is made last and broken first. Turn the system off/on prior to making or breaking single-ended connections.

continue

Page 14

(SECTION ONE: About Krell continued)

Preamplifier

Channel

Also termed preamplifier or preamplifier channel. A channel is one Evolution Two, comprised of one preamplifier chassis and one power supply chassis.

Right-terminated channel

Any right preamplifier channel that is last in a chain of linked Evolution preamplifiers is referred to as right-terminated. There is only one RG-45 link cable connected to a right-terminated channel.

Transmitter

Also termed transmitter preamplifier. The transmitter is a right-terminated preamplifier channel that sends IR, RC-5, and RS-232 data to the other linked preamplifier channel(s), or receiver(s).

Receiver

Also termed receiver preamplifier. Receivers are linked preamplifier channels that receive IR, RC 5, and RS-232 data from a right terminated preamplifier channel, or transmitter.

Operation

Off

When the stand-by/power LEDs and the backlight grid are not illuminated, the preamplifier is off.

Stand-by

A low power consumption status that keeps the audio and regulator circuits at idle. The stand-by/power LEDs are illuminated in red, when the preamplifier channel is in the stand-by mode. Krell recommends leaving the preamplifier in the stand-by mode when it is not playing music.

Operation

When the backlight is illuminated in blue, the preamplifier is in the operational mode and ready to play music.

Technology

Krell Current Mode

A proprietary Krell circuit topology in which the audio gain stages of a component

ent rather than voltage domain. This unique technology pr

operate in the cur

the component with exceptional speed, and a wide bandwidth.

ovides

Page 15

SECTION TWO

Unpacking and Placement

This section describes the procedures for safely unpacking and placing your Evolution Two Monaural Preamplifier. Each Evolution Two preamplifier channel is shipped in 1 carton consisting of 2 chassis: 1 power supply chassis and 1 preamplifier chassis.

Opening the Evolution Two Shipping Carton

Each Evolution Two shipping carton measures 22.3 in. (56.6 cm) wide by 23.5 in. (59.7 cm) high by 16.2 in. (41.1 cm) deep.

Preamplifier Chassis. Each preamplifier chassis measures 17.3 in. (43.8 cm) wide by 3.7 in. (9.5 cm) high by 18.5 in. (47 cm) deep, and weighs 21 lbs. (9.5 kg).

Power Supply Chassis. Each power supply chassis measures 17.3 in. (43.8 cm) wide by 3.7 in. (9.5 cm) high by 17.3 in. (43.8 cm) deep, and weighs 31 lbs. (14 kg).

Left/Right Channel Orientation

Evolution Two preamplifier channels are assembled as left or right channels. Preamplifier RCA connectors (31, 36, 38, 40) are color coded. Left preamplifier channels are assembled with white RCA connectors, and right preamplifier channels are assembled with red RCA connectors.

To Remove the Preamplifier Channel from the Shipping Carton

1. Open a shipping car

items:

1 Evolution Two preamplifier chassis 1 Evolution T

AC Power cord

1 1

12-pin DC cable

1 RJ-45 control cable

emote control

1 r 2 AAA-size 1.5 Volt batteries for the remote

-10 T

1 T 1 packet containing the owner’s reference and warranty card

wo power supply chassis

x wr

ton and r

ench for the remote control

emove the top layer of foam. Y

ou see these

continue

Page 16

(SECTION TWO: Unpacking and Placement continued)

To Remove the Preamplifier from the Shipping Box continued)

(

2. Carefully remove the preamplifier chassis, power supply chassis, and acces-

sories from the box.

3. Place the the preamplifier chassis and power supply chassis in a safe location

and remove the protective plastic wrapping.

4. Place the power supply chassis where you intend to use the assembled pre-

amplifier. Krell recommends that you place the preamplifier chassis on top of the power

supply chassis. You can make 2 identical preamplifier/power supply stacks, as individual left and right channels, or one 4-chassis stack, with both channels combined in one stack.

5. Repeat Steps 1-5 for the remaining preamplifier channel(s).

Placement

Before you install an Evolution Two preamplifier into your system, please follow the guidelines in this section to select a location for your component. This will facilitate a clean, trouble-free installation.

The Evolution Two preamplifier does not require a special rack or cabinet for installation. Each preamplifier channel measures 17.3 in (43.8 cm) wide by 7.3 in. (18.5 cm) high by 18.5 in. (47 cm) deep

The Evolution Two preamplifier requires at least 2 inches of clearance on each side and at least two inches of clearance above the component to provide adequate ventilation. Installation inside cabinetry may require additional ventilation.

AC Power Guidelines

eamplifier has superb r

The Evolution T

wo pr cated AC circuit. Avoid connections through extension cords or multiple AC adapters. High quality 15 amp AC strips are acceptable. The use of AC line conditioning devices is not r already on board the Evolution Two.

Supply,

on page 7.

ecommended. The featur

For more information, see Separate Power

egulation and does not require a dedi-

es provided by these devices are

Page 17

SECTION THREE

Quick Start

To access the full array of available functions for the Evolution Two Monaural Preamplifier, please read the entire owner’s reference manual. The abbreviated routine in this Quick Start section will allow you to connect and operate the Evolution Two quickly and enjoy its basic functions.

Evolution T be operated in linked mode, using CAN Link.

wo preamplifier channels may be operated independently, or they may

Connecting the Evolution Two to Your System

Position each power supply and preamplifier chassis where you intend to use connected channels. Do do not move the chassis after they are connected.

1. Connect the power supply chassis and the preamplifier chassis with the 12-pin

DC cable provided, using the DC power connectors (47) on the back panels (1-2).

IMPORTANT Never connect two power supplies together.

2. In order to operate the Evolution Two preamplifier in linked mode, connect the

preamplifier channels together with the supplied RJ-45 control cable. In linked mode, functions including power, volume, balance, phase, record, mute, and input selections are instantaneously transmitted between linked preamplifier channels.

When a system with linked pr entation is established immediately

mation on linked preamplifiers, see

eamplifiers,

Evolution T

wo Pr

eamplifier channels is power

, with no user inter

Appendix: CAN Link and Multiple

on page 51.

vention.

ed on, left/right ori

For mor

e infor

3. Neatly ar

and all components. Separate AC wires from audio cables to prevent hum or other unwanted noise fr

range and or

ganize wiring to and fr

om being intr

oduced into the system.

om the Evolution Two preamplifier

4. Connect the outputs of your source equipment to the appropriate CAST (34),

balanced (30), single-ended (31), or tape inputs (32, 33) on the Evolution Two.

5. Connect the appropriate main outputs (35-41) on the Evolution Two to your

amplifier.

continue

Page 18

(SECTION THREE: Quick Start)

Connecting the Evolution Two To Your System continued)

(

6. On each preamplifier channel, connect the supplied AC power cord to the IEC

power cord receptacle (48).

7. On each preamplifier channel, plug the AC power cord into AC power. The

front panel display (15) scrolls through red stand-by LEDs illuminate (4), indicating that the Evolution Two preamplifier is in stand-by mode. The scrolling stops when the Evolution Two is ready to be powered on.

Note

Use only the power cord provided with the preamplifier channel to make the connection to AC power. Operation with a power cord other than the one supplied by Krell could induce noise, limit current, or otherwise impair the ability of the preamplifier channel to perform optimally.

EVOLUTION 2 SOFTWARE VERSION, and the

Operating the Evolution Two (Linked Mode)

After the Evolution Two is connected to your system and to AC power, and the front panel display (15) has stopped scrolling, begin operation:

1. Press the power button on either preamplifier chassis front panel or the pwr

key (3) on the remote control. The blue backlights illuminate, the red stand-by LEDs (4) turn off, and the front panel displays read displays show the factory default input:

S-1, and level: -INF. The Evolution Two

INITIALIZING. The front panel

is now in the operational mode.

2. With the Evolution Two preamplifier output muted or the volume fully attenuat-

ed, select a sour

ce manually using the fr input select keys on the remote control (8, 9, 10, 11). Start playing the source. Use the level control knob or level keys (16) to set the volume to a comfortable listening level.

ont panel input select buttons or the

3. To return the Evolution Two preamplifier to the stand-by mode, press the

power button or pwr key.

ecommends leaving the Evolution T

ell r

Kr not playing music.

wo in the stand-by mode when it is

Page 19

POWER

ENTER

TAPE

PHASE

RECORD

MUTE

SECTION FOUR

Anatomy of an Evolution Two

This section describes Evolution Two Monaural Preamplifier functions.

Figure 1 Evolution Two Preamplifier Chassis and Power Supply Chassis Front Panels

Chassis

Power

Remote Functions

Preamplifier Functions

Display Level

Navigate/ Customize

1817

1 Preamplifier Chassis 2 Power Supply Chassis

Power Button

3 4 Stand-by LED 5 Power Backlight 6 IR Sensor 7 Infrared Transmitter LED 8 Single-ended Input

Selection Buttons Balanced Input

Selection Buttons

10 CAST Input Selection Buttons

ape Button and LED

Mute Button and LED

12 13 Record Button and LED 14 Phase Button and LED 15 Front Panel Display 16 Level Control Knob

Menu Button

17 18 Enter Button 19 Preamplifier Chassis Feet

Power Supply Chassis Feet

8910 11 12 13 14 1667

Inset Evolution Two Preamplifier

iew

Channel: Fr

ont Panel V

continue

Page 20

SECTION FOUR: Anatomy of an Evolution Two continued)

(

Figure 2 Evolution Two Remote Control

Power Preamplifier Functions

Level Navigate/

Customize CD

Functions

Amplifier Functions

3 Power Key 8 Single-ended Input

Selection Keys

9 Balanced Input

Selection Keys CAST Input

Selection Keys

ape Key

11 12 Mute Key

Record Key

13 14 Phase Key 21 Main Bus Key 22 Balance Key 16 Level Keys 17 Menu Key 18 Enter Key

Pause Key

23 24 Play Key 25 Stop Key

rack For

and Back Key

27 Search Forward

and Back Key 28 Amplifier Power Key 29 Meter Select Key

war

12 14

10 22

13 21

Page 21

Front Panel Description

See Figure 1 on page 15

Each Evolution Two Monaural Preamplifier channel is comprised of two chassis, the preamplifier chassis and the power supply chassis. Front panel functions and their descriptions follow.

Chassis

1 Preamplifier Chassis

The preamplifier chassis front panel provides power on, input and zone selection, level control, menu functions, and status display.

2 Power Supply Chassis

Powerful transformers, high quality regulators, and extensive electrical and magnetic shielding are housed in a separate power supply for each preamplifier channel.

Power

3 Power Button or Key

Use this button or key to switch the Evolution Two between the stand-by and operational modes.

4 Stand-by LED

The red stand-by LEDs on the preamplifier and the power supply illuminate when the Evolution Two is plugged into a standard AC wall receptacle, indicating that the Evolution Two is ready to be switched to the operational mode. The stand-by LEDs flash when r

5 Power Backlight

The blue power backlight illuminates when the Evolution Two is in the operational mode.

emote control signals are received.

Remote Functions on the Front Panel

6 Infrared Sensor

The infrar trol. For proper remote control operation, make sure the infrared sensor is not covered or obstructed.

Infrar

The stand-by LED (4) on the pr Two sends signals via the infrared transmitter LED to a programmable remote contr

Control,

ed sensor r

ransmitter LED

ed T

ol, such as the Universal Kr

on page 40.

eceives commands fr

eamplifier chassis (1) flashes when the Evolution

ell T

om the Evolution T

ouch Scr

een Remote.

wo remote con-

See IR Out

continue

Page 22

SECTION FOUR: Anatomy of an Evolution Two continued)

(

Preamplifier Functions

8, 9, 10 Input Select Buttons or Keys

Use these buttons to select the corresponding rear panel input that is connected to a CAST (C-1, C-2, C-3), balanced (B-1, B-2, B-3), or single-ended (S-1, S-2, S-3, S-4) analog source. The front panel display shows the selected input and volume level.

There is no dedicated tape input connector on the Evolution Two. B-3 and S-4 may be selected for tape input.

11 Tape Button and LED, or Key

Use this button or key to select the corresponding rear panel input that is connected to an analog tape source. Either B-3 or S-4 (32, 33) may be configured as a tape input. When you configure either input, the other input is available as a normal input. The red tape LED illuminates when the tape input is selected. The front panel display (15) shows:

tomize tape operation see

12 Mute Button and LED, or Key

Use this button or key to mute the preamplifier channel output. To unmute, press the mute button again. The red mute LED illuminates when mute is selected.

To customize mute operation see Mute, on page 42.

Tape Input, on page 46.

TAPE and the main volume level. To cus-

13 Record Button and LED, or Key

14 Phase Button and LED, or Key

Display

15 Front Panel Display

Use this button or key to select the desired input for the record bus. The red

ecord LED illuminates, when record is selected. The front panel display (15)

r shows the selected record input and the main volume level. To return to the main input display, press the record button again.

See Play and Record, on

page 30.

Use this button or key to invert the absolute polarity of the main output 180 degrees. The red phase LED illuminates, when phase is selected.

ont panel display pr

The fr

ovides pr

eamplifier channel status messages, including input and record bus status, tape output status, volume level, balance offset, and menu selections.

Page 23

Level Control

16 Level Control Knob or Level Keys

Use this knob or keys to increase or decrease system volume level or, with the balance key (22), to adjust balance. The level control knob or keys also select menu options that customize the Evolution Two.

Evolution Two,

on page 32.

Navigate/Customize

17 Menu Button or Key

Use this button or key to access the menu functions of the Evolution Two. For more information, see

18 Enter Button or Key

Use this button or key to configure the menu functions of the Evolution Two.

For more information, see Customizing the Evolution Two, on page 32.

See Customizing the

Customizing the Evolution Two, on page 32.

continue

Page 24

SECTION FOUR: Anatomy of an Evolution Two continued)

(

Remote Control Description

See Figure 2 on page 16

The Evolution Two Monaural Preamplifier remote provides all of the power, preamplifier, level control, and navigate/customize functions outlined under

Description,

including CD functions and menu configuration, accessed using only the remote control keys.

Battery Installation and Removal

The Evolution Two preamplifier remote control uses 2 AAA-size 1.5 Volt batteries. Batteries are included with the shipment. To install the batteries:

1. Remove the remote control backplate, using the supplied T-10 Torx wrench.

2. Install the batteries, following the battery position diagram on the plastic bat-

tery receptacle.

3. Replace and secure the backplate.

pages 17-19. The remote control provides additional functions,

Front Panel

Notes

Replace batteries when remote control function becomes intermittent.

Remove batteries if the remote control is not used for a long period of time. Battery leakage can damage the remote control.

Preamplifier Functions

21 Main Bus Key

Use this key to select the input for the main bus output. The r minates, when this function is selected.

Record

, on page 30.

Level Control

Bal(ance Key)

Use this key, along with level keys or the level control knob (16) on the preamplifier chassis to balance left and right output levels. The fr (15) shows the left and right balance offset.

ed main LED illu-

For more information, see Play and

ont panel display

Page 25

Compact Disc Functions

The compact disc keys of the Evolution Two remote control are functional with all Krell compact disc players.

23 Pause Key

Use this key to temporarily suspend playing the current compact disc track. Press pause again or press the play key (24), to resume playing the track at the point pause was engaged.

24 Play Key

Use this key to begin compact disc playback.

25 Stop Key

Use this key to end compact disc playback.

26 Track Forward and Back Keys

Use these keys to select and begin playing the track that follows or precedes the current track.

27 Search Forward and Back Keys

Press and hold these keys to scroll forward or backward through the current track.

Note

For information on track programming functions, refer to the owner's reference of your Krell compact disc player

Amplifier Functions

28 Amp Pwr Key

Use this key to activate Krell amplifiers connected to your system.

29 Sel (Meter Select) Key

Use this key to select the meter range of the power meter scale on the front of a Krell Evolution One power amplifier.

Owner’s Reference,

Please refer to the Evolution One

for more information.

continue

Page 26

POW

INOUT

INPUTS

TAP

E OUTPUTS

MAIN BUS RECORD BUS

MAIN O

UTPUTS

OUT

LINK

EVO

LUTION TWOEVOLUTION TWO

SECTION FOUR: Anatomy of an Evolution Two continued)

POW

PHONO POWER

FUSE

SUPPLY

50/60 Hz

MADE IN USA

NO USER SERVICEABLE PARTS INSIDE

DIGITAL

FUSE

SUPP

ANALOG

KRELL INDUSTRIES, INC.

45 CONNAIR ROAD

ORANGE, CT 06477-3650

USA

EVOL

UTION TWOEVOLUTION TWO

(

Figure 3 Evolution Two Preamplifier Chassis and Power Supply Chassis Back Panels

42 43

37 38

39 40

46 47

Inputs

30 Balanced Inputs: B-1, B-2, B-3 31 Single-ended Inputs: S-1, S-2, S-3, S-4 32 Balanced Tape Input: B-3 33 Single-ended Tape Input: S-4

CAST Inputs: C-1, C-2, C-3

Outputs

35 Main Bus Balanced Tape Output 36 Main Bus Single-ended

ape Output

Record Bus Balanced Tape Output

38 Record Bus Single-ended

Tape Output Balanced Main Output

39 40 Single-ended Main Output 41 CAST Outputs

RC-5 Input

Remote

Link Contr Phono Power

RC-232 Input

12 VDC In/Out

45 CAN Link In/Out 46 Phono Power Port 47 DC Power Connector

IEC Power Cord Receptacle

Page 27

Back Panel Description

See Figure 3 on page 22

The Evolution Two Monaural Preamplifier back panel provides all input and output connections, remote control inputs and outputs, and the power connection. Back panel features and their descriptions follow.

Left/Right Channel Orientation

Evolution Two preamplifiers are assembled as left or right preamplifier channels. Preamplifier RCA connectors (31, 36, 38, 40) are color coded. Left preamplifier channels are assembled with white RCA connectors, and right preamplifier channels are assembled with red RCA connectors.

Inputs

30 Balanced Inputs: B-1, B-2, B-3

The Evolution Two is equipped with 3 balanced analog source inputs with XLR connectors.

31 Single-ended Inputs: S-1, S-2, S-3. S-4

The Evolution Two is equipped with 4 single-ended analog source inputs with RCA connectors.

32, 33 Tape Inputs: B-3 and S-4

The Evolution Two is equipped with one balanced and one single-ended input, for use with a tape source. Either input may be configured as the tape input,

om the menu (17). When you select the tape input (11), the other input

fr becomes a normal input, selectable using the front panel button or the remote control key (8, 9).

C-1, C-2, and C-3 CAST Inputs

The Evolution T tors, for use with Krell CAST-equipped input devices.

Outputs

35, 36 Main Bus Outputs

The Evolution Two is equipped with one balanced main bus output with XLR connectors and one single-ended main bus output with RCA connectors. Use the main bus outputs to r

For more information, see Play and Record, on page 30.

wo is equipped with 3 CAST inputs with 4-pin bayonet connec-

d the input signal playing on the main outputs.

ecor

continue

Page 28

SECTION FOUR: Anatomy of an Evolution Two continued)

(

(Outputs continued)

37, 38 Record Bus Outputs

The Evolution Two is equipped with one balanced record bus output with XLR connectors and one single-ended record bus output with RCA connectors. Use the record bus outputs to record a input signal other than the signal playing on the main outputs.

For more information, see Play and Record, on page 30.

39, 40 Main Outputs

The Evolution Two is equipped with one balanced output with XLR connectors and one single-ended output with RCA connectors.

41 CAST Outputs

The Evolution Two is equipped with two CAST preamplifier outputs with 4-pin bayonet connectors, for use with Krell CAST-equipped amplifiers.

Remote Connections on the Back Panel

42 RC-5 In

Each Evolution Two preamplifier chassis (1) has an RC-5 remote input. The RC-5 remote connector is used with a third party remote control system that provides RC-5 (IR) data with the carrier intact, via a wired connection. A stereo tip, ring, sleeve 1/8 RC-5 data, Ring = +5 V, Sleeve = GND.

” mini connector is used in the following configuration: Tip =

43 RS-232

Each Evolution Two preamplifier chassis (1) has an RS-232 port that receives messages from a computer-based control system, providing integrated control of all preamplifier functions. The RS-232 input uses a 9-pin D-subminiature connector.

Sending Commands and Interpr

See the Evolution Two developer's reference, entitled RS-232 Port:

eting Data,

for mor

e information.

44 12 VDC In/Out (12 V Trigger)

eamplifier chassis (1) has 2 outputs that send and one

Each Evolution T input that r

wo pr

eceives 12 VDC power on/of

f (12 V trigger) signals to and from other Krell components and other devices that incorporate a 12 V trigger. This allows you to tur

ough the r

thr

emote control. When the Evolution Two is switched to operational

n other components on or of

f, or to and fr

om stand-by

mode and is connected to other components through the 12 V trigger, it sends a signal that will switch other components, allowing whole systems or par

ts of

Page 29

systems to be easily coordinated. For more information on customizing the 12 V

trigger, see

the following configuration: Tip = +12 V, Sleeve = GND.

Notes

When the Evolution Two is in the operational mode, the 12 V trigger provides 12 Volts of DC output. When the component is in the stand-by mode or off, the DC output is 0 Volts.

A minimum of 30 mA is required to operate the 12 V trigger.

Consult the owner's reference of the components used in a custom installation to take full advantage of the remote capabilities of the Evolution Two.

Input Trigger, on page 39. Mono 1/8” mini connectors are used in

Link Control

45 CAN Link

Each Evolution Two preamplifier chassis (1) has 2 RJ-45 link connectors, connected in parallel. These are used to operate preamplifier channels in linked mode.

Operation Using CAN Link, on page 31, and Link Control, on page 41.

For more information, see Connections Using CAN Link, on page 28,

Phono Stage Connector

46 Phono Power Port

Power

47 DC Power Connector

48 IEC Power Cord Receptacle

Each power supply chassis (2) has a phono power port, for connecting the preamplifier to a Krell KPE phono stage. Only one phono power port needs to be connected to the KPE.

Each pr connect the pr vided 12-pin DC power cable.

The IEC power connector, located on the power supply chassis (2), is for use with the provided IEC standard 15 amp AC power cord.

eamplifier channel is equipped with two DC power connectors that

eamplifier chassis and the power supply chassis, using the pr

Page 30

SECTION FIVE

Connecting the Evolution Two to Your System

This section describes Evolution Two Monaural Preamplifier connections and introduces the CAN Link remote control option.

Input and Output Connections

Krell recommends using its proprietary Krell CAST system for unparalleled sonic performance for connections between the Evolution Two preamplifier and other CAST-equipped components. Krell CAST uses flexible interconnecting cables that can be drawn through tight spaces and concealed.

The Evolution Two also offers balanced operation. The circuitry and connections associated with balanced operation not only can minimize sonic loss but also are immune to induced noise, especially for installations using long cables.

XLR Pin Configuration

Pin 1 Ground Pin 2 Non-inverting (0 Pin 3 Inverting (180

Inputs and outputs are located on the Evolution Two back panels. Maintain the correct left/right orientation, when hooking up your system.

Left/Right Channel Orientation

Evolution Two preamplifiers are assembled as left or right channels. Preamplifier RCA connectors (31, 36, 38, 40) are color coded. Left preamplifier channels are assembled with white RCA connectors, and right preamplifier channels are assembled with red RCA connectors.

Connection Steps

Position each power supply and preamplifier chassis where you intend to use the connected channels. Do do not move the connected chassis after they ar assembled.

)

Page 31

The following steps describe how to connect an Evolution Two preamplifier to your system:

1. Connect each power supply chassis and preamplifier chassis with the 12-pin

DC cable provided, using the DC power connectors (47) on the back panels (1-2).

IMPORTANT Never connect two power supplies together.

2. In order to operate the Evolution Two preamplifier in linked mode, connect the

When a system with linked Evolution Two preamplifiers is powered on, left/right orientation is established immediately, with no user intervention.

information on linked preamplifiers, see

Evolution Two Preamplifiers,

on page 51.

Appendix: CAN Link and Multiple

For more

3. Neatly arrange and organize wiring to and from the Evolution Two preamplifier

and all components. Separate AC wires from audio cables to prevent hum or other unwanted noise from being introduced into the system.

4. Connect the outputs of your source equipment to the appropriate CAST (34),

balanced (30), single-ended (31), or tape inputs (32, 33) on the Evolution Two.

5. Connect the appr

opriate main outputs (35-41) on the Evolution T

wo to your

amplifier.

6. On each preamplifier channel, connect the supplied AC power cord to the IEC

power cor

d receptacle (48).

7. On each preamplifier channel, plug the AC power cord into AC power. The

front panel display (15) scrolls through

ed stand-by LEDs illuminate (4), indicating that the Evolution T

r is in stand-by mode. The scrolling stops when the Evolution Two is ready to be powered on.

Note

Use only the power cord provided with the preamplifier channel to make the connection to AC power could induce noise, limit current, or otherwise impair the ability of the preamplifier channel to per

form optimally.

. Operation with a power cor

EVOLUTION 2 SOFTWARE VERSION, and the

d other than the one supplied by Kr

wo preamplifier

ell

continue

Page 32

SECTION FIVE: Connecting the Evolution Two to Your System continued)

(

Connections Using CAN Link

The Evolution Two brings a new convenience to the operation of monaural preamplifiers, using a sophisticated, reliable control system called a controller area network (CAN). Using CAN Link, any number of preamplifier channels may be linked for multichannel playback. CAN Link enables all linked preamplifier channels to be controlled from any single linked preamplifier channel in the system.

To Connect Multiple Evolution Two Preamplifiers via CAN Link:

After the power supply chassis is connected to the preamplifier chassis with the 12-pin DC cable:

1. Connect one RJ-45 connector from either CAN Link connector (45) on the

back panel of any preamplifier chassis (1) to either CAN Link connector on any other preamplifier chassis. The two preamplifier channels that are connected are now linked.

2. Repeat Step 1 for each additional preamplifier channel you want to link. For

more information on linked preamplifier channels, see

and Multiple Evolution Two Preamplifiers,

Appendix: CAN Link

on page 51.

Page 33

SECTION SIX

Evolution Two Operation

The Evolution Two Monaural Preamplifer is easy to operate. Instructions follow for on/off and stand-by operation.

IMPORTANT Always mute or fully attenuate the preamplifier level when switching sources.

Do not change input connections to the amplifier when the amplifier is on. Use care when setting high playback levels. Always lower the volume level at the first

sign of loudspeaker distress.

On/Off and Stand-by Operation (Linked Mode)

When powering on any system, turn on amplifiers last. When powering down, turn off amplifiers first.

After the Evolution Two is connected to your system and to AC power, and the front panel display (15) has stopped scrolling, begin operation:

1. Press the power button on either preamplifier chassis front panel or the pwr

key (3) on the remote control. The blue backlights illuminates, the red stand-by LEDs (4) turn off, and the front panel displays read displays shows the factory default input: is now in the operational mode.

S-1, and level: -INF. The Evolution Two

INITIALIZING. The front panel

eamplifier output muted or the volume fully attenuat-

2. With the Evolution T

wo pr ed, select a source manually using the front panel input select buttons or the input select keys on the remote control (8, 9, 10, 11). Start playing the source. Use the level contr

ol knob or level keys (16) to set the volume to a comfor

table

listening level.

3. To return the Evolution Two to the stand-by mode, press the power button or

pwr key

ell r

Kr playing music. Turn the Evolution Two off when the system is not being used for an extended period of time.

ecommends leaving the Evolution T

wo in the stand-by mode when it is not

continue

Page 34

SECTION SIX: Evolution Two Operation continued)

(

To Turn Off Your System

1. Place the amplifiers in the stand-by mode.

2. Press the power button on the preamplifier chassis front panel or the pwr key

(3) on the remote control to switch the Evolution Two to the stand-by mode.

3. Turn off the amplifiers using the back panel power switch or by disconnecting

them from AC power.

4. Turn off the Evolution Two by unplugging the AC power cord from AC power.

Play and Record

The Evolution Two allows you to listen to one source through the main output (39 or 44), while recording a different source through the record bus output (37 or 38). A main bus tape output (35, 36) is also available and allows for the connection of a second recording device.

1. Press the power button (3) on the preamplifier chassis front panel (1) to switch

the Evolution Two from stand-by to the operational mode.

2. Press the input selection button on the preamplifier chassis front panel or the

input selection keys (8, 9, 10, or 11) on the remote control to select the source that you want to listen to through the main outputs.

3. Begin playing the source. Use the level control knob on preamplifier chassis

front panel or the level keys (16) on the remote control to adjust the volume to the desired listening level.

4. Press the record button on the preamplifier chassis front panel or the record

key (13) on the remote control. The red record LED illuminates on the preamplifier chassis front panel.

5. Press the input selection button or keys to select the source that you want to

record through the record bus output source selected for the main bus outputs, in Step 2.

. This source can be different than the

6. Press the record button or the main key (21) on the remote control, to return to

the main bus output.

Page 35

Operation Using CAN Link

When a system with linked Evolution Two preamplifier channels is powered on, left/right orientation is established immediately, with no user intervention.

1. The input selections and the power, volume, balance, phase, record, and mute

adjustments you make on any preamplifier channel are instantly transmitted between all linked preamplifier channels.

2. All configuration settings may be copied from any linked preamplifier channel

to all other linked preamplifier channels using the clone feature.

page 35.

See Clone, on

For more information on linked preamplifiers, see

Multiple Evolution Two Preamplifiers,

on page 51.

Appendix: CAN Link and

Page 36

SECTION SEVEN

Customizing the Evolution Two

The Evolution Two Monaural Preamplifier easy-to-use menu allows you to configure the following functions. You can also use the menu to review version information about the software, hardware, and firmware installed in the Evolution Two:

AC Mains, page 33 Input Name, page 38 Recall, page 44 Backlight, page 33 Input Phase, page 39 RS-232 Control, page 44-5 Balance, page 34 Input Trigger, page 39-40 Save, page 45 Channel Assign, pages 34-5 IR Out Control, page 40 Software Clone, page 45-6 Clone, page 35-6 Link Control, page 41 Tape Input, page 46 Display, page 36-7 Mute, page 42 Theater Mode, page 47 Info, page 37 Output Trigger, page 42-43 Volume Display, page 48 Input Level Trim, page 38 RC-5 Control, page 43

Navigation Conventions

Navigating the Evolution Two menu is straightforward and consistent throughout, using four functions and the menu option

BACK.

17 Menu Button or Key

To enter the menu, press the menu button on the preamplifier chassis front panel or the menu key on the remote control. Once you are in the menu, you can press the menu button or key to exit the menu.

16 Volume Knob or Level Keys

Use the volume knob on the preamplifier chassis front panel or the up and down keys on the remote control to scroll forward and backward through the menu hier-

chy. Each menu list is a continuous loop.

18 Enter Button or Key

Press the enter button on the preamplifier chassis front panel or the enter key on

emote contr

the r selection. Only the enter button on the preamplifier chassis front panel may be used to initiate a clone.

ont Panel Display

The display shows the active function and configurable options.

BACK

Select back to scr without confir

ol to select a function or a configuration option, and to confirm a

, or to exit a menu option

oll backwar

ming it.

ds up the menu hierar

chy

The first list you see in the menu is the list of configurable functions. Select a configurable function to view a submenu: the list of options that configur

ou can configur

tion. Y

e some options as well, using a second submenu.

e the func

Page 37

Menu Functions

AC Mains

This function enables you to operate the Evolution Two from a switched AC outlet. If AC Mains is set to by. Thereafter, you may switch the preamplifier to and from stand-by, using the power button or pwr key (3). The options are:

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key (18)

on the remote control

3. Use the level control knob or the up and down keys to select the desired

option:

4. Press the enter button or key to confirm the selection. The front panel display

reads:

OFF

The Evolution Two switches to stand-by mode, when it detects AC power.

The Evolution Two turns on immediately, bypassing the stand-by mode, when it detects AC power.

OFF or ON.

AC MAINS.

ON, the preamplifier turns on immediately, by-passing stand-

OFF, ON.

AC MAINS.

. The front panel display (15) shows the default mode: OFF.

Backlight

This function enables you to control the blue power indicator brightness. The options ar

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

2. Pr

3. Pr

4. Use the level control knob or the up and down keys to select the desired

5. Press the enter button or key to confirm the selection. The front panel display

, LOW (25%), MED (50%), HIGH (100%)

OFF

down keys (16) on the r

emote contr

ess the enter button on the pr

(18) on the remote control

. The front panel display (15) reads: BRIGHTNESS.

ol to select:

eamplifier chassis front panel or the enter key

ess the enter button or the enter key again

the default mode:

brightness:

reads:

BRIGHTNESS.

HIGH.

OFF, LOW, MED, HIGH.

. The fr

BACKLIGHT

ont panel display shows

continue

Page 38

(SECTION SEVEN: Customizing the Evolution Two continued)

Balance

This function enables you to select the balance between the left and right channels. The options are:

CENTER, L .5-5 dB <, R .5-5 dB >.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

CENTER.

. The front panel display (15) shows the default

3. Use the level control knob or the up and down keys to select the desired bal-

ance option from 0 to +5 dB, in .5 dB increments, left or right.

4. Press the enter button or key to confirm the selection. The front panel display

reads:

Balance is not active if a preamplifier channel is not linked. At least two linked preamplifier channels s are required for balance to activate.

linked preamplifiers channels, see

Two Preamplifiers,

BALANCE.

Appendix: CAN Link and Multiple Evolution

on page 51.

BALANCE.

For more information on

17 Menu Button or Key

Enter or exit the menu.

16 Volume Knob

or Level Keys

Navigate the menu hierarchy; review functions and configuration options.

Enter Button or Key

Select a configuration option; confirm a selection.

BACK

Scroll backwards through the menu hierarchy; exit a menu option without confirming it.

Channel Assign

This function enables you to override the factory set channel assignments. The options are:

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

3. Use the level contr

option:

4. Press the enter button or key to confirm the selection. The front panel display

eads:

FORCE LEFT

Use to make a left channel respond as a right channel.

FORCE LEFT, FORCE RIGHT, FORCE NONE, NO OVERRIDE.

CHANNEL ASSIGN.

. The front panel display (15) shows the default

NO OVERRIDE.

ol knob or the up and down keys to select the desir

NO OVERRIDE, FORCE LEFT, FORCE RIGHT, or FORCE NONE.

CHANNEL ASSIGN.

Page 39

Clone

FORCE RIGHT

Use to make a right channel respond as a left channel.

FORCE NONE

The preamplifier channel ignores balance selections. Use this option to set up more than 2 preamplifier channels.

NO OVERRIDE

Return to CHANNEL ASSIGN. Serves the same function as BACK in all other menu items.

For more information on linked preamplifiers, see Appendix: CAN Link and Multiple Evolution Two Preamplifiers,

on page 51.

This function enables you to transfer configured functions between linked preamplifier channels. There is no need to configure multiple menu choices for each preamplifier channel. Clone insures that, where desired, the configuration of functions for multiple preamplifier channels is identical. The option is:

CLONE BEGIN.

Enter the menu, then:

1. Identify the clone transmitter and clone receiver. The clone transmitter is the

preamplifier channel that transmits the clone and the clone receiver(s) is/are the preamplifier channel(s) that receive(s) the clone.

2. Use the level control knob on the preamplifier chassis front panel (1) of the

clone transmitter, or the up and down keys (16) on the remote control to select:

CLONE.

ess the enter button on the preamplifier chassis front panel (1) of the clone

3. Pr

transmitter or the enter key (18) on the remote control

eads:

(15) r

ess the enter button or the enter key again

4. Pr

reads:

ess the enter button on the fr

5. Pr

eceivers go into stand-by mode, indicating that the clone is accomplished.

Note

The enter button on the r

CLONE BEGIN.

. The clone transmitter display

CLONE TRANSMIT and the clone receiver display(s) read(s): CLONE RECEIVE.

ont panel of the clone transmitter

emote contr

ol cannot be used to activate the clone function.

. The front panel display

. All clone

continue

Page 40

(SECTION SEVEN: Customizing the Evolution Two continued)

CLONE BEGIN

Sends the message that a clone is about to begin, from the clone transmitter to the clone receiver(s).

CLONE TRANSMIT

Once the clone begin message is sent, the clone transmitter display reads: CLONE

TRANSMIT, indicating that the preamplifier is ready to transmit the clone data.

CLONE RECEIVE

Once the clone begin message is sent, the clone receiver(s) display reads: CLONE

RECEIVE, indicating that the preamplifier(s) is(are) ready to receive the clone data.

Note

In order to set a clone receiver to ignore the clone, use the level control knob on the clone receiver front panel to scroll to

CLONE IGNORE.

Display

This function enables you to turn on the front panel display (15) all the time, or turn it off after a time out. The options are:

ON, TIMED.

17 Menu Button or Key

Enter or exit the menu.

16 Volume Knob

or Level Keys

Navigate the menu hierarchy, review functions and configuration options.

Enter Button or Key

Select a configuration option or confirm a selection.

BACK

Scroll up the menu hierarchy, or exit a menu option without confirming it.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or the up and

down keys on the remote control (16) to select:

DISPLAY.

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control

. The front panel display (15) reads: MODE.

3. Press the enter button or key (18) again. The front panel display shows the

default mode:

4. Use the level contr

option:

5. Pr

eads:

ON or TIMED.

ess the enter button or key

MODE.

ON.

ol knob or the up and down keys to select the desired

to confir

m the selection. The fr

ont panel display

6. Use the level control knob or the up and down keys to select: BRIGHTNESS.

7. Press the enter button or key. The front panel display shows the default mode:

HIGH.

8. Use the level control knob or the up and down keys to select the desired

brightness:

OFF, LOW (25%), MED (50%), or HIGH (100%).

9. Press the enter button or key to confirm the selection. The front panel display

reads:

BRIGHTNESS.

Page 41

PC Boards

CAST IN 1 CAST IN 2 CAST IN 3 CONNECT CONTROL DISPLAY DISPLAY VERSION ENCODER FACEPLATE MAIN OUT 1 OUT 2 REGULATOR

APE OUT 1

T TAPE OUT 2 VOLT IN VOLUME

Info

The front panel display is always on.

TIMED

The front panel display times out after 5 seconds.

BRIGHTNESS

Controls the brightness of the display. When the brightness setting is OFF, the display is at 50% of brightness when in menu mode, and turns completely off when you leave the menu mode.

This function enables you to access information about the preamplifier software, EEPROM, and PC Boards. The PC Boards are listed in the left margin, on this page.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

INFO.

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control sion number.

. The front panel display (15) show the software ver-

3. Rotate the level control knob clockwise or press the up key. The front panel

display shows the EEPROM version number.

4. Rotate the level control knob clockwise or press the up key again. The front

panel display shows the PC

board version number.

5. Press the enter button or key. Use the level control knob or the up and down

keys to scroll through the version numbers of PC boards, from the PC Boards listed at left.

EEPROM

Electrically erasable programmable read-only memory. An erasable memory chip used in the Evolution Two to store menu selection information.

continue

Page 42

(SECTION SEVEN: Customizing the Evolution Two continued)

Input Level Trim

This function enables you to select an input offset for a particular input. The options are:

+/-6 dB, in 1 dB increments.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or the up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

B-1.

. The front panel display (15) shows the default

3. Use the level control knob or the up and down keys to select the desired input:

B-1, B-2, B-3, S-1, S-2, S-3, S-4, C-1, C-2, C-3, or TAPE.

4. Press the enter button or key. The front panel display shows the default mode:

0 dB.

5. Use the level control knob or the up and down keys to select the desired trim

option:

+/-6 dB, in 1 dB increments.

INPUT LEVEL TRIM.

Input Name Options

AUX, AUX1, AUX2, AUX3 B-1, B-2, B-3, BYPC-1 C-2, C-3, CABLE, CD, CD1, CD2, CD-R, COMP

, DCC, DISC, DISC 1,

DAC, DA DISC 2, DISC 3, DSS, DVD, DVD1, DVD2, DVD3, DVD-A

EQ, GAME, HI-8 LD, LD1, LD2, LINE 1, LINE 2, LINE 3, LINE MDISC, MIXER, MON

PHONO, PHON1, PHON2, PROC S-1, S-2, S-3, S-4, SACD, SAT, SRC1, SRC2, SRC3, SURR, S-VID

TAPE1, TAPE2, TAPE3, TAPE, TEST, THR, TUNER, TUNR1, TUNR2, TV VCR, VCR1, VCR2, VCR3, VDISC, VIDEO, VID1, VID2, VID3 8MM, 8TRK

6. Press the enter button or key to confirm the selection. The front panel display

shows the selected input.

Input Name

This function enables you to select an input name for each input. The input name options are listed in the left margin, on this page.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

3. Use the level contr

B-1, B-2, B-3, S-1, S-2, S-3, S-4, C-1, C-2, C-3, or TAPE.

4. Press the enter button or key. The front panel display shows no characters.

5. Use the level contr

name, fr

6. Press the enter button or key to confirm the selection and return to the input

list, in Step 3.

. The front panel display (15) shows the default

B-1.

ol knob or the up and down keys to select the desir

om the input name options listed at left.

ont panel display shows the input name.

The fr

INPUT NAME.

ed input:

ed input

o select input names for other inputs, r

epeat Steps 3 and 4.

Page 43

Input Phase

This function enables you to invert the absolute polarity of the selected input 180 degrees. The selections are:

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or the up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

3. Use the level control knob or the up and down keys to select the desired input

from the list:

4. Press the enter button or key. The front panel display shows the default mode:

NORMAL.

5. Use the level control knob or the up and down keys to select: NORMAL or INVERT.

6. Press the enter button or key to confirm the selection. The front panel display

shows the selected input.

NORMAL

The phase of the selected input is unaffected.

NORMAL, INVERT.

INPUT PHASE.

. The front panel display (15) shows the default

B-1.

B-1, B-2, B-3, S-1, S-2, S-3, S-4, C-1, C-2, C-3, or TAPE.

17 Menu Button or Key

Enter or exit the menu.

16 Volume Knob

or Level Keys

Navigate the menu hierarchy, review functions and configuration options.

Enter Button or Key

Select a configuration option or confirm a selection.

BACK

Scroll up the menu hierarchy, or exit a menu option without confirming it.

INVERT

The phase of the selected input is inverted 180 degrees.

Input Trigger

This function enables you to configure the input trigger. The options are: OFF,

NORMAL, THEATER.

Enter the menu, then:

1. Use the level contr

down keys on the remote control to select:

ess the enter button on the pr

2. Pr

key (18) on the r mode:

3. Use the level contr

option:

4. Press the enter button or key to confirm the selection. The front panel display

eads:

ol knob on the preamplifier chassis front panel or the up and

emote control

NORMAL.

ol knob or the up and down keys to select the desir

, NORMAL

OFF

INPUT TRIGGER.

or THEA

eamplifier chassis fr

. The fr

TER.

ont panel display (15) shows the default

INPUT TRIGGER.

ont panel or the or enter

continue

Page 44

(SECTION SEVEN: Customizing the Evolution Two continued)

rigger continued)

(Input T

OFF

The Evolution Two does not respond to 12 V input trigger commands.

NORMAL

The Evolution Two responds to 12 V input trigger commands.

THEATER

The Evolution Two responds to 12 V input trigger commands, and the theater mode enabled input is selected automatically.

IR Out Control

This function enables you to access Evolution Two IR commands and program a learning remote control.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

B-1 MAIN.

. The front panel display (15) shows the default

See Theater Mode, on page 47.

IR OUT.

17 Menu Button or Key

Enter or exit the menu.

16 Volume Knob

or Level Keys

Navigate the menu hierarchy, review functions and configuration options.

Enter Button or Key

Select a configuration option or confirm a selection.

BACK

Scroll up the menu hierarchy, or exit a menu option without confirming it.

3. Use the level control knob or the up and down keys to select the desired IR

command from the list.

4. Press the enter button or key to send the command out via the preamplifier

front panel IR transmitter (7). The stand-by LED (4) on the preamplifier chassis flashes, indicating that the command has been sent.

5. Repeat Steps 2-4 for each of the commands you wish to transmit.

6. Press the enter button or key to confirm the selection. The front panel display

reads:

For a listing of IR codes, see the Evolution Two developer’s reference entitled

RS-232 Por

preamplifier is the link transmitter of IR data. For more information on linked preamplifier channels, see

eamplifiers,

IR OUT.

t: Sending Commands and Interpr

Appendix: CAN Link and Multiple Evolution Two

on page

eting Data.

The right-ter

minated

Page 45

Link Control (CAN Link)

This function enables you to link and unlink preamplifiers. The options are: LINKED,

UNLINKED.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or the up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

LINKED.

3. Use the level control knob or the up and down keys to select the desired

option:

LINKED, or UNLINKED.

4. Press the enter button or key to confirm the selection. The front panel reads:

LINKED.

LINKED

When preamplifier channels are linked, power, volume, balance, phase, record, mute, and input selections are automatically communicated between linked preamplifier channels. All other settings remain local and may be cloned from one preamplifier channel to another.

Clone,

on page 45.

LINK CONTROL.

. The front panel display (15) shows the default

See also Clone, on page 35, and Software

UNLINKED

When a preamplifier channel is unlinked, it does not respond to commands from any other linked pr

eamplifier channels. After the pr

settings can be changed, independent of other pr

eamplifier channel is unlinked,

eamplifier channels.

For more information on linked preamplifier channels, see Appendix: CAN Link and Multiple Evolution Two Preamplifiers,

on page 51.

continue

Page 46

(SECTION SEVEN: Customizing the Evolution Two continued)

Mute

This function enables you to control the mute mode. The options are: FULL, -20 dB,

BACK.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the or enter

key (18) on the remote control mode:

FULL.

. The front panel display (15) shows the default

3. Use the level control knob or the up and down keys to select the desired

option:

FULL or -20 dB.

4. Press the enter button or key to confirm the selection. The front panel display

reads:

FULL

The output of the Evolution Two is completely silenced.

MUTE.

17 Menu Button or Key

Enter or exit the menu.

16 Volume Knob

or Level Keys

Navigate the menu hierarchy, review functions and configuration options.

Enter Button or Key

Select a configuration option or confirm a selection.

BACK

Scroll up the menu hierarchy, or exit a menu option without confirming it.

-20dB

The output of the Evolution Two is reduced by 20 dB and may still be audible.

Output Trigger

This function enables you to turn the two output triggers on or off, or configure them with independent delays of up to 20 seconds. The options are:

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

ess the enter button or key again. The front panel display shows the default

3. Pr

mode:

4. Use the level control knob or up and down keys to select: OFF, ON, or DELAY.

5. Select DELA

6. Enter the delay time.

7. Press enter to confirm the selection. The front panel display reads: DELAY.

TRIGGER 1.

OFF.

ou ar

OUTPUT TRIGGER.

. The front panel display (15) shows the default

ompted to enter a delay time of 0-20 seconds.

e pr

ON, OFF, DELAY.

Page 47

8. Use the level control knob or up and down keys to scroll to: BACK.

9. Press the enter button or key to return to: TRIGGER 1.

10. Use the level control knob or the up and down keys to scroll to: TRIGGER 2.

11. Repeat Steps 3-7 to set Trigger 2.

The 12 Volt trigger output is enabled at power on for the selected trigger (Trigger 1 or 2).

OFF

The 12 Volt trigger output is disabled at power on for the selected trigger (Trigger 1 or 2).

DELAY

The 12 volt trigger output is enabled at power on for the selected trigger (Trigger 1 or 2), and the delayed for a period of time (0-20 seconds).

RC-5 Control

This function enables you to change the link transmit status of the Evolution Two. The options are:

LINK TRANSMIT, LINK RECEIVE.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

RC-5 CONTROL.

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

LINK TRANSMIT.

. The front panel display (15) shows the default

3. Use the level control knob or the up and down keys to select the desired

option:

LINK TRANSMIT or LINK RECEIVE.

4. Press the enter button or key to confirm the selection. The front panel display

reads:

The right-ter Connect the RC-5 cable to the RC-5 connector on the right-terminated preamplifier channel. For more information on linked preamplifier channels, see

CAN Link and Multiple Evolution T

RC-5 CONTROL.

minated pr

eamplifier channel is the link transmitter of RC-5 data.

Appendix:

wo Pr

eamplifiers,

on page

continue

Page 48

SECTION SEVEN: Customizing the Evolution Two continued)

(

Recall

This function enables you to access factory default settings or your own saved settings, or to undo a clone. The options are:

Enter the menu, then:

1. Use the level control knob on the preamplifier channel front panel or up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier channel front panel or the or enter

key (18) on the remote control. The front panel display (15) shows the default mode:

FACTORY.

3. Use the level control knob or the up and down keys to select the desired

option:

FACTORY, SAVED, or CLONE UNDO.

4. Press the enter button or key to confirm the selection. The front panel display

reads:

FACTORY

Recalls the factory settings.

RECALL.

FACTORY, SAVED, CLONE UNDO.

RECALL.

17 Menu Button or Key

Enter or exit the menu.

16 Volume Knob

or Level Keys

Navigate the menu hierarchy, review functions and configuration options.

Enter Button or Key

Select a configuration option or confirm a selection.

BACK

Scroll up the menu hierarchy, or exit a menu option without confirming it.

SAVED

Recalls settings previously stored in memory using the SAVE function. See also

Save, on page 45.

CLONE UNDO

Cancels clone settings. All settings revert to the last settings in memory prior to cloning.

See also Clone, on page 35.

RS-232 Control

This function enables you to change the link transmit status of the Evolution Two. The options are

Enter the menu, then:

1. Use the level control knob on the preamplifier channel front panel or up and

down keys (16) on the r

2. Press the enter button on the preamplifier channel front panel or the enter key

(18) on the remote control mode:

3. Use the level control knob or the up and down keys to select the desired

option:

LINK TRANSMIT, LINK RECEIVE.

emote control to select:

. The front panel display (15) shows the default

LINK TRANSMIT.

LINK TRANSMIT, or LINK RECEIVE.

RS-232 CONTROL.

Page 49

Save

4. Press the enter button or key to confirm the selection. The front panel display

reads:

The right-terminated preamplifier channel is the link transmitter of RS-232 data. Connect the RS-232 cable to the RS-232 connector on the right-terminated preamplifier channel. For more information on linked preamplifier channels, see Appendix: CAN Link and Multiple Evolution Two Preamplifiers, on page 51.

This function enables you to save a copy of the current settings. The options are:

GO, BACK.

Enter the menu, then:

RS-232 CONTROL.

1. Use the level control knob on the preamplifier channel front panel or up and

down keys (16) on the remote control to select:

SAVE.

2. Press the enter button on the preamplifier channel front panel or the or enter

key (18) on the remote control. The front panel display (15) shows the default mode:

GO.

3. Press the enter button or key to save the settings The front panel display

reads:

SAVE.

Saves a copy of current settings to memory, overwriting previously saved settings.

Software Clone

This function enables you to transfer operational softwar plifier channel to another multiple preamplifier channels is identical. The options are:

Enter the menu, then:

1. Identify the clone transmitter and clone receiver. The clone transmitter is the

preamplifier channel that transmits the clone and the clone receiver(s) is/are the preamplifier channel(s) that receive(s) the clone.

2. Use the level control knob on the preamplifier chassis front panel of the clone

transmitter

CLONE.

3. Press the enter button on the clone transmitter front panel or the enter key (18)

on the r

om one linked pr

e fr

. Software clone insures that, where desired, software for

NO, YES.

, or up and down keys (16) on the remote control to select:

emote contr

. The fr

ont panel display (15) r

eads:

SW BEGIN.

eam

SOFTW

ARE

continue

Page 50

SECTION SEVEN: Customizing the Evolution Two continued)

(

e Clone continued)

(Softwar

4. Press the enter button or the enter key (18) again. The front panel display on

the clone transmitter shows the default:

5. Use the level control knob on the clone transmitter or the up and down keys to

select:

ARE YOU SURE YES.

6. Press the enter button on the clone transmitter. The front panel display on the

clone transmitter reads: receiver(s) read(s): stand-by mode, indicating that the software clone is accomplished.

SW CLONE BEGIN

Begins the software clone process.

ARE YOU SURE

Confirms the software clone. The options are: NO, YES

Cancels the software clone. The front panel display returns to: SOFTWARE CLONE.

YES

Initiates the software clone.

SENDING UPDA

RECEIVING UPDA

ARE YOU SURE NO.

TE.

The front panel display on the clone

TE.

All linked preamplifier channels switch to

17 Menu Button or Key

Enter or exit the menu.

16 Volume Knob

or Level Keys

Navigate the menu hierarchy, review functions and configuration options.

Enter Button or Key

Select a configuration option or confirm a selection.

BACK

Scroll up the menu hierarchy, or exit a menu option without confirming it.

Tape Input

This function enables you to select either S-4 or B-3 as the tape input. The input that is not selected operates as a normal input. The options are:

Enter the menu, then:

1. Use the level control knob on the preamplifier channel front panel or up and

2. Pr

3. Use the level contr

4. Press the enter button or key to confirm the selection. The front panel display

NONE

When the tape input is set to NONE, both S-4 and B-3 act as nor tape inputs.

B-3, S-4, NONE.

down keys (16) on the remote control to select:

TAPE INPUT.

ess the enter button on the preamplifier channel front panel or the enter key (18) on the remote control mode:

S-4.

ol knob or the up and down keys to select the desir

option:

eads:

S-4 , B-3, NONE, or BACK.

APE INPUT

. The front panel display (15) shows the default

mal inputs, not as

Page 51

Theater Mode

This function enables you to select theater mode volume for a particular input. Use this function when connecting the output of a preamp/processor to the Evolution Two for home theater applications. Configuring an input for theater mode sets that input for unity gain and suspends the level control of the Evolution Two. Volume adjustments are then made through the preamp/processor connected to the input configured for theater mode on the Evolution Two. The options are:

ON, OFF.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or the up and

down keys (16) on the remote control to select

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control

B-1.

3. Use the level control knob or the up and down keys to select the desired input:

B-1, B-2, B-3, S-1, S-2, S-3, S-4, C-1, C-2, C-3, or TAPE.

4. Press the enter button or key. The front panel display shows the default mode:

OFF.

THEATER.

. The front panel display (15) shows the default input:

5. Use the level control knob or the up or down keys to select ON or OFF.

6. Press ENTER to confirm the selection and return to the selected input.

The selected input is set to THEA disengaged on the Evolution T

OFF

TER

and the volume contr

wo.

The selected input is configured normally and the volume control for the normal input is engaged on the Evolution Two.

Note

Only one input on the Evolution T is set for an input, theater mode is cleared automatically from other inputs.

The Evolution T ger is configured for

wo selects the theater input automatically upon power on, if the input trig

THEATER. See Input Trigger, on pages 39-40.

wo can be in theater mode at a time. When theater mode

ol for the theater input is

continue

Page 52

SECTION SEVEN: Customizing the Evolution Two continued)

(

Volume Display

This function enables you to select the numeric mode for the volume display, displaying values from softest to loudest: 0 to 151. Alternatively, you can select the dB mode for the volume display, displaying values from softest to loudest: -inf to +12 dB. The options are:

NUMERIC, dB.

Enter the menu, then:

1. Use the level control knob on the preamplifier chassis front panel or up and

down keys (16) on the remote control to select:

2. Press the enter button on the preamplifier chassis front panel or the enter key

(18) on the remote control mode:

dB.

. The front panel display (15) shows the default

3. Use the level control knob or the up and down keys to select the desired

option:

NUMERIC or DB.

4. Press the enter button or key to confirm the selection. The front panel display

reads:

VOLUME DISPLAY.

17 Menu Button or Key

Enter or exit the menu.

16 Volume Knob

or Level Keys

Navigate the menu hierarchy, review functions and configuration options.

Enter Button or Key

Select a configuration option or confirm a selection.

BACK

Scroll up the menu hierarchy, or exit a menu option without confirming it.

Page 53

SECTION EIGHT

Questions and Answers

Q. Why does the second preamplifier channel not respond when I select an input

or adjust the volume on the other preamplifier channel?

A. The two preamplifier channels must be linked together using the RJ-45 cable

in order for functions to be sent between preamplifier channels.

Q. I renamed the B-1 input on one of the preamplifier channels. Why does it still

read B-1 on the other preamplifier channel?

A. When two or more preamplifier channels are linked, basic functions such as

volume and input selection ar fier channels. In order for linked preamplifier channels to recognize customized menu functions such as renaming inputs, the clone procedure must be performed.

on page 45.

For more information, see Clone, on page 35, and Software Clone,

Q. When I adjust the balance, the sound moves to the side that is opposite my

adjustment. What is wrong?

e simultaneously executed by all linked preampli-

A. The Evolution Two preamplifier is preset from the factory as either a left or a

right preamplifier. Make sure the preamplifier chassis with the white connectors is used for the left channel and the preamplifier chassis with red connectors is used for the right channel.

Q. What should I do if I see a DC ERROR message?

A. The Evolution Two preamplifier has a sophisticated DC protection system that

detects potentially harmful DC. Please contact Krell to determine what action to take, if you see a DC error message.

Q. The Evolution Two preamplifiers are plugged into AC outlets and the link

cables are connected, but the preamplifier channels do not power on. What should I do?

A. The link cables only pass data between preamplifier channels. The power sup-

ply chassis must be connected to the pr 12-pin DC cable.

eamplifier chassis with the pr

ovided

continue

Page 54

(SECTION EIGHT: Questions and Answers continued)

Troubleshooting System Noise

When you mix and match high-performance audio components, each with its own ground potential, a low frequency hum may occur in one or both loudspeakers.

If this happens when you place the Evolution Two preamplifier into your system, follow these simple troubleshooting steps.

1. Check that all input and output connections are of sound construction.

2. With the preamplifier channel off, remove the interconnect cables, the turn the

preamplifier channel on. If the hum disappears, turn the preamplifier channel off and reinsert one of the interconnect cables. Turn the preamplifier channel back on. Repeat this process for each cable.

3. If the hum reappears with one or both interconnect cables reinserted, the cable

needs to be replaced.

4. If the interconnect cables are sound, you may be experiencing a ground loop.

Please contact your authorized Krell dealer, distributor, or Krell for suggestions on how to eliminate the ground loop.

Page 55

Appendix: CAN Link and Multiple Evolution Two Preamplifiers

The Evolution Two Monaural Preamplifier brings a new convenience to the operation of monaural preamplifiers, using a sophisticated, reliable control system called a controller area network (CAN). The CAN Link communication system enables all linked preamplifier channels to be controlled from any single linked preamplifier channel in the system. CAN Link logic distinguishes between left and right channels. This distinction is of specific significance in the following situations:

1. The connection of multiple preamplifier channels.

2. The control of the Evolution Two using a third party remote control system via

the infrared (IR) transmitter (7) and the RC-5 (42) and RS-232 (43) connectors.

3. The use of the balance and channel assign functions, via the menu button or

key (17).

CAN Link logic is transparent during the normal operation of a stereo pair of linked Evolution Two preamplifiers.

To Connect Multiple Evolution Two Preamplifiers via CAN Link:

After the power supply chassis is connected to the pr 12-pin DC cable:

1. Connect one RJ-45 control cable from either CAN Link connector (45) on the

back panel of any preamplifier chassis (1) to either CAN Link connector on any other preamplifier chassis. The two connected preamplifier channels are now linked.

2. Repeat Step 1 for each additional preamplifiers you want to link.

eamplifier chassis with the

continue

Page 56

(Appendix: CAN

Left/Right Channel Orientation

Right-Terminated Preamplifier Channel

Right preamplifier channels have a unique electrical identity under CAN Link. When a system with linked Evolution Two preamplifiers is powered on, the system automatically identifies the right-terminated preamplifier channel, and left/right orientation is established immediately, with no user intervention.

Any right preamplifier channel that is last in a chain of linked Evolution Two preamplifiers is referred to as right-terminated. There is only one RG-45 link cable connected to a right-terminated preamplifier channel.

Example. The illustration below shows the preamplifier chassis back panels of three linked preamplifier channels. There are two right (R) channels and one left (L) channel. In this configuration, the top chassis belongs to a right-terminated preamplifier channel:

Link and Multiple Evolution Two Preamplifiers continued)

right terminated one RG-45 link cable connected

to the top chassis

IR, RC5, and RS-232 Data Transfer from a Third Party Controller

In a group of 2 or more preamplifier channels connected via CAN Link, the rightterminated channel is the transmitter of IR, RC-5, and RS-232 data to the other linked preamplifier(s), or receiver(s). Always make IR, RC-5, and RS-232 connections from the third party controller to the right-terminated preamplifier channel.

Page 57

Warranty

Each Evolution Series preamplifier has a limited warranty of five years for parts and labor on circuitry. Should this product fail to perform at any time during the warranty, Krell will repair it at no cost to the owner, except as set forth in this warranty.

This warranty does not apply to damage caused by acts of God or nature.

The war

ranty described on this page shall be in lieu of any other warranty, expressed or implied, including, but not limited to, any implied warranty of merchantability or fitness for a par

ticular purpose. There are no warranties which exceed beyond those described in this document. If this product does not perform as warranted herein, the owner’s sole remedy shall be repair. In no event will Krell be liable for incidental or consequential damages arising from purchase, use, or inability to use this product, even if Krell has been advised of the possibility of such damages.

Proof of purchase in the form of a bill of sale or receipted invoice substantiating that the unit is within the warranty period must be presented to obtain warranty service. The warranty begins on the date of the original retail purchase, as noted on the bill of sale or receipted invoice from an authorized Krell dealer or distributor. Previously owned equipment, when re-purchased from an authorized Krell dealer or distributor, has the balance of the original warranty, based on the original date of manufacture.

The warranty for Krell products is valid only in the country to which they were originally shipped, through the authorized Krell distributor for that country, and at the factory. There may be restrictions on or changes to Krell’s warranty because of regulations within a specific countr

. Please check with your distributor for a complete

understanding of the warranty in your country.

If a unit is serviced by a distributor who did not import the unit, there may be a charge for service, even if the product is within the warranty period.

Freight to the factory is your responsibility. Return freight within the United States (U.S.A.) is included in the warranty. If you have purchased your Krell product out-

.S.A. and wish to have it serviced at the factory, all freight and associated

side the

charges to the factory are your responsibility.

continue

Page 58

arranty continued)

Krell will pay return freight to the U.S.A.-based freight forwarder of your choice. Freight and other charges to ship the unit from the freight forwarder to you are also your responsibility.

Krell is not responsible for any damage incurred in transit. Krell will file claims for damages as necessary for units damaged in transit to the factory. You are responsible for filing claims for shipping damages during the return shipment.

Krell does not supply replacement parts and/or products to the owner of the unit. Replacement parts and/or products will be furnished only to the distributor performing service on this unit on an exchange basis only; any parts and/or products returned to Krell for exchange become the property of Krell.

No expressed or implied warranty is made for any Krell product damaged by accident, abuse, misuse, natural or personal disaster, or unauthorized modification.

Any unauthorized voltage conversion, disassembly, component replacement, perforation of chassis, updates, or modifications performed to the unit will void the warranty.

In the event that Krell receives a product for warranty service that has been modified in any way without Krell authorization, all warranties on that product will be void. The product will be returned to original factory layout specifications at the owner’s expense before it is repaired. All repairs required after the product has been returned to original factory specifications will be charged to the customer, at current parts and labor rates.

All operational features, functions, specifications, and policies are subject to change without notification.

To register your product for warranty benefits, please complete and return the Warranty Registration Card enclosed in the shipping box within 15 days

chase. Thank you.

of pur

Page 59

Return Authorization Procedure

If you believe there is a problem with your component, please contact your dealer, distributor, or the Krell factory to discuss the problem before you return the component for repair. To expedite service, you may wish to complete and e-mail the Service Request Form in the Service Section of our website at:

http://www

.krellonline.com

To contact the Krell Service Department

TEL 203-799-9954, Monday-Friday

9:00 AM to 5:00 PM EST FAX 203-795-2287 E-MAIL service@krellonline.com WEBSITE http://www.krellonline.com

Evolution Two

PRODUCT MODEL NUMBER SERIAL NUMBER

To return a product to Krell, please follow this procedure so that we may serve you better.

1. Obtain a Return Authorization Number (R/A number) and shipping address

from the Krell Service Department.

2. Insure and accept all liability for loss or damage to the product during ship

ment to the Krell factory and ensure all freight (shipping) charges are prepaid.

The product may also be hand delivered if arrangements with the Service

tment have been made in advance. Pr

Depar

oof of pur

warranty validation at the time of hand delivery.

chase will be r

equired for

IMPOR Use the original packaging to ensure the safe transit of the product to the factory, dealer and bill the owner for such packaging if the product received by Krell was boxed in nonstandard packaging or if the original packaging was so damaged that it was unusable. If Kr fied before the product is returned.

TANT

, or distributor

chase additional packaging, please contact your authorized Krell dealer, dis-

o pur

. Krell may, at its discretion, return a product in new packaging

ed, the owner will be noti

ell deter

mines that new packaging is r

equir

tributor, or the Krell Service Department for assistance.

Page 60

Specifications

Inputs

3 CAST via 4-pin bayonet connectors 3 balanced via XLR connectors 4 single-ended via RCA connectors

Tape input

1 balanced via XLR connector or 1 single-ended via RCA connector,

user configurable

Main outputs

2 CAST via 4-pin bayonet connectors 1 balanced via XLR connector 1 single-ended via RCA connector

Tape outputs

1 balanced via XLR connector and 1 single-ended via RCA connector,

buffered, connected to main input-

selection bus 1 balanced via XLR connector and 1 single-ended via RCA connector,

buffered, connected to a dedicated

record-output bus

Control inputs

1 RS-232 input via a 9-pin D-subminiature

connector 1 remote IR detector input via

a 3-conductor 3.5 mm connector 1 12 VDC trigger input via 3.5 mm

connector 1 preamplifier link via an RJ-45 connector

Control outputs

individually pr

trigger outputs via 3.5 mm connectors 1 preamplifier link via an RJ-45 connector

Power output

1 phono power output (±20 VDC) for KPE

via a 9-pin D-subminiatur

Input impedance

CAST: 35 Ohms Balanced: 40 k Ohms Single-ended: 20 k Ohms

Output impedance

CAST: >1 M Ohms Balanced: 250 Ohms Single-ended: 125 Ohms

Gain

dB (CAST or balanced output)

6 dB (single-ended output)

ogrammable 12 VDC

e connector

Volume control

Balanced, current-mode, 16-bit, discrete R-2R ladder

Input overload

CAST: 11 mA RMS Balanced: 9 V RMS Single-ended: 18 V RMS

Output overload

CAST: 22 mA RMS Balanced: 20 V RMS Single-ended: 10 V RMS

Frequency response

20 Hz to 20 kHz ±0.01 dB

Balanced or single-ended inputs:

0.2 Hz to 1.3 MHz +0, -3 dB CAST inputs:

0.2 Hz to 2 MHz +0, -3 dB

Total harmonic distortion plus noise

Balanced Output: <0.003%, 20 Hz to 20 kHz, 4 V RMS CAST output: 4 mA RMS

Signal-to-noise ratio

4 V RMS balanced or 4 mA RMS CAST output

Wideband, unweighted: >97 dB “A” weighted: >104 dB

Power consumption

Standby: 50 W Power on: 80 W Power on, with KPE: 90 W

Dimensions

Preamplifier only:

17.3 in.W x 3.7 in. H x 18.5 in. D

43.8 cm W x 9.5 cm H x 47 cm D Power supply only:

17.3 in. W x 3.7 in. H x 17.3 in. D

43.8 cm W x 9.5 cm H x 43.8 cm D eamplifier channel:

17.3 in. W x 7.3 in. H x 18.5 in. D

43.8 cm W x 18.5 cm H x 47 cm D

eo pair:

Ster

17.3 in. W x 14.6 in. H x 18.5 in. D

43.8 cm W x 37.1 cm H x 47 cm D

Weight

Shipped: 69 lbs., 31.2 kg Preamplifier only: 21 lbs., 9.5 kg Power supply only: 31 lbs., 14 kg