Krell KPS-28-C Owners manual

KPS 28c

"rile I.-EAriER IN AUDIO ENGINEERING

Instructions for Use

Krell Playback System

with Krell CAST Technology

Owner’s Reference

KPS 28c

Krell Playback System

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

with Krell CAST
Technology

v 00.0

TEL [phone]

FAX [phone]
E-MAIL krell @ krellonline.com

WEBSITE http:l/www.krellonline.com

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

WARNINGS

The KPS 28c 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 KPS 28c must be unobstructed at all times during operation. Do not

place flammable material above or beneath the component.

Do not remove or bypass the ground pin on the end of the AC cord. This could cause radio frequency inter­ference (RFI) to be introduced into your playback system. Operate the KPS 28c only with the power cord

supplied.

Tum off aft systems’power before connecting the KPS 28c to any component. Make sure aft cable termina­tions are of the highest quali~ free from frayed ends, short circuits, or cold solder joints.

THERE ARE NO USER SERVICEABLE PARTS INSIDE ANY KRELL PRODUCT.

Please contact your authorized Krell dealer, distributor, or Krell if you have any questions not addressed in

this reference manual.

F~---~®equipped

This product is manufactured in the United States of Amedca. Krell® is a registered trademark of Krell Industries, Inc., and is restricted for use by Krell

Industries, Inc., its subsidiaries, and authorized agents. Krall Playback System
Krell Industries, Inc. Krell Link

are either registered trademarks or trademarks of Pacific Microsonics, Inc. in the United States and/or other countries. HDCD system manufactured
under license from Pacific Microsonics, Inc. This product is covered by one or more of the following: In the USA: 5,479,168, 5,638,074, 5,640,161,
5,808,574, 5,838,274, 5,854,600, 5,864,311, 5,872,531, and in Australia: 669114. Other patents pending. TosLink
Corporation. All other trademarks and tradenames are registered to their respective companies.

TM

is a trademark of Krell Industries, Inc. [~, HDCD

TM

is a trademark of Krell Industries, Inc. Krell CAST is a patent pending of

®,

High Definition Compatible Digital® and Pacific Microsonics

TM

TM

is a trademark of Toshiba

© 2000 by Krell Industries, Inc. All rights reserved P/N 304374

Contents

Page

INTRODUCTION
DEFINITION OF TERMS

REVOLUTIONARY KRELL CAST

TECHNOLOGY
UNPACKING
PLACEMENT

AC Power Guidelines

QUICK START

Input and Output Connections
Power On

To Play a Compact Disc
FRONT PANEL DESCRIPTION
BACK PANEL DESCRIPTION

REMOTE CONTROL DESCRIPTION

Battery Installation and Removal

1
1

2
3
3

3
4
4

4
4

6
8

10
10

CONNECTING THE KPS 28c

TO YOUR SYSTEM

Analog Output Connections
Digital Output Connections

Connecting the KPS 28c

Power On

OPERATING YOUR KPS 28c

To Play a Compact Disc

How to Write a Program
How to Create an A/B Loop

WARRANTY

RETURN AUTHORIZATION
PROCEDURE

SPECIFICATIONS

12
12

12
12

13
13
13

13
14

15

16

Back Cover

Krell Playback System 28c

iii

Illustrations

Page

FIGURE 1 The KPS 28c Front Panel
FIGURE 2 The KPS,28c Back Panel

FIGURE 3 The KPS 28c Remote Control

5
7

9

iv Krell Playback System 28c

Introduction Definition of Terms

Thank you for your purchase of the Krell Playback
System 28c. The KPS 28c’s transport design

eliminates error-producing wobble and delivers
exceptional tracking and focus accuracy, regard-

less of environment or disc characteristics. Digital
circuitry provides ultra-high signal resolution and
direct coupled analog circuitry assures superior
low-frequency performance, with low distortion,
wide bandwidth, and minimal negative feed­backs. The KPS 28c can be seamlessly integrat­ed into a home theater or whole-house audio sys­tem, and the remote control provides for the con­venient operation of the KPS 28c as well as other
Krell components.

This owner’s reference manual contains impor­tant information on placement, installation, and
operation of your KPS 28c. Please read this

information carefully. A thorough understanding
of these details will help ensure satisfactory
operation and long life for your KPS 28c and

related system components.

Following are the definitions of key terms used

in your owner’s reference manual.

CONNECTIONS

Bridging. An internal connection option that

links two amplifier channels to operate as one
combined amplifier channel, greatly increasing
the channel’s power output.

Krell Multi Amp Throughput (MAT). A propri-
etary internal connection option that sends the

same music signal to all amplifier channels

using one balanced or single-ended connec­tion. MAT reduces installation complexity and

cabling requirements in systems containing

multiple amplifiers.

INPUTS AND OUTPUTS

Balanced. A symmetrical input circuit that has

equal impedance from both input terminals with

respect to a common reference point. Balanced

connections have 6 dB more gain than single-

ended connections.

Krell Playback System 28c

Single-ended. An input circuit in which one

side of a transmission line circuit is ungrounded.

Single-ended connections have 6 dB less gain

than balanced connections.

OPERATION

Off. When the power button on the front panel

is pressed and the blue power LED turns off,

the component is off.

Operational Mode. When the power button on

the front panel is pressed and the blue power

LED illuminates, the component is in opera-

tional mode and ready to play music.

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.

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 each

have their own electrical characteristics, which

affect the sonic presentation of the entire system.

CAST: A New Approach

CAST circuitry recognizes signal transmitted in

the current domain instead of the voltage

domain between each component. CAST trans-

mission unifies the individual components and
their interconnects into an electrically linked
whole. The sonic presentation of the entire sys­tem remains intact.

CAST Basics

Here’s how a CAST audio system works.

Internally, each CAST source transfers, or

amplifies, current using Krell Current Mode cir-

cuitry. This current signal is then output using

CAST circuitry. When the signal is received by

a CAST input, Krell Current Mode circuitry

again takes over until the signal reaches the

loudspeaker. By maintaining the musical signal

in the current domain from beginning to end, an

entire CAST system behaves as if it is one com-

ponent. With CAST, anomalies of signal transmis-

sion between components are eliminated. Cable

impedances and their effects on the transmitted

signal are 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 transfer the musical signal within
a component. CAST combined with Krell
Current Mode takes circuitry signal transmis­sion to the next evolutionary level. In essence,

Krell Current Mode maintains the integrity of the
signal within the component and CAST pre­serves the transmitted signal between compo-

nents. Together, CAST and Krell Current Mode
technologies unify separate Krell components

into a single global circuit.

CAST Cable Construction

A CAST system uses cables manufactured by

Krell and other manufacturers specially

licensed by Krell. Thin and flexible CAST cables

are constructed with the same build quality as

other Krell products and are aesthetically

matched to the components that Kreil 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.

The Best Musical Performance

When you operate a CAST system, you will

hear significant improvements in every perfor-

mance area: speed, precision, dynamic range,

depth and width of the sound stage, transient

impact, tonal balance, harmonic distortion, and
more. The goal for 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.

2 Krell Playback System 28c

Unpacking Placement

1. Open the shipping box and remove the top
layer of foam. You see these items:

1 KPS 28c
1 AC power cord
1 12 VDC (12 Volt trigger)

remote cable link
1 1.25 amp slowblow fuse
1 T-10 Torx wrench
1 KPS 28c remote control

AAA size 1.5 Volt batteries

2

1 packet containing the Owner’s

Reference and the Warranty
Registration Card

2. Carefully remove the unit and accessories
from the shipping box. Remove the foam

end caps and protective plastic wrap from

the KPS 28c.

Notes

ff any of these items are not included in the
shipping box, please contact your authorized
Krell dealer, distributor, or Krell for assistance.

Save all packing materials, ff you ship your KPS
28c in the future, repack the un# in its original
packaging to prevent trans# damage. See

Return Authorization Procedure, on page 16,

for more information.

Before you install the KPS 28c into your sys­tem, review the following guidelines to choose
the location for your component. This will facili-

tate a clean, trouble-free installation. The KPS
28c does not require a special rack or cabinet

for installation. For the dimensions of the KPS
28c, see Specifications, on the back cover.

The KPS 28c requires at least two inches (5 cm)
of clearance on each side and at least two inch­es (5 cm) of clearance above the component

provide adequate ventilation. Installations inside

cabinetry may need extra ventilation.

Note

The KPS 28c incorporates an advanced sus-

pension system and does not require addition-

al mass coupling or isolation. You may experi-

ment with feet or cones as long as they are not

permanently affixed to the chassis, Any unau-

thorized modifications to the electronics or

chassis will void the warranty.

IMPORTANT

Do not attach enhancement accessories such

as rings, mats, or dampers to individual com-

pact discs. These accessories may interfere

with the compact disc transport, resulting in
erratic playback and/or poor sound.

AC POWER GUIDELINES

The KPS 28c has superb regulation and does

not require a dedicated AC circuit. Avoid connec-

tions through extension cords or multiple AC

adapters. High quality 15 amp grounded AC

strips are acceptable. High quality AC line condi-

tioners or filters can be used if they are ground-

ed andI meet or exceed the unit’s power supply
rating of 100 VA.

Krell Playback System 28c

3