Carver ZR1600 User Manual

ZR1000 & ZR1600

Power Amplifiers

USER MANUAL

ZR1000 & ZR1600

Power Amplifiers

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
THE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED PERSONNEL!

The exclamation point within an equilateral triangle is intended to alert the user of the presence of
important operating and maintenance (servicing) instructions in the literature accompanying the

EXPLANATION OF
SAFETY SYMBOLS

IMPORTANT SAFETY INSTRUCTIONS

1) Read these instructions.

2) Keep these instructions.

3) Heed all warnings.

4) Follow all instructions.

5) Do not use this apparatus in or near water.

6) Clean only with a dry cloth.

7) Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.

9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the
other. A grounding- type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your
safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10) Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit
from the apparatus.

11) Only use attachments/accessories specified by the manufacturer.

12) Unplug this apparatus during lightning storms or when unused for long periods of time.

13) Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as
power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally or has been dropped.

appliance.

The lightning flash with the arrowhead symbol within an equilateral triangle is intended to alert the
user to the presence of uninsulated “dangerous voltage” within the products’ enclosure that may
be of sufficient magnitude to constitute a risk of electric shock to persons.

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.

TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR BOTTOM COVERS.
NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

FCC COMPLIANCE NOTICE: This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1)

This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that
may cause undesired operation.

CAUTION: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to

operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the

FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

IMPORTANT: ZR Series amplifiers require Class 2 output wiring.

MAGNETIC FIELD
CAUTION! Do not locate sensitive high-gain equipment such as preamplifiers or tape decks directly above or below the unit. Because

this amplifier has a high power density, it has a strong magnetic field, which can induce hum into unshielded devices that are located
nearby. The field is strongest just above and below the unit. If an equipment rack is used, we recommend locating the amplifier(s) in
the bottom of the rack and the preamplifier or other sensitive equipment at the top.

2

TABLE OF CONTENTS

SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Magnetic Field Warning

FCC Compliance Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Important Paperwork

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POWER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FEATURES

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EXTERNAL CHASSIS DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EXTERNAL CONTROLS, CONNECTORS, AND STATUS INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Panel
Rear Panel

INTERNAL JUMPER SETTINGS

Input Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input Sensitivity

INSTALLATION AND CONNECTIONS

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Temperature/Humidity Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AC Power

Input Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Balanced and Unbalanced Connections
Output Configuration
Replacing Input Modules

Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

WARRANTY INFORMATION

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CARE AND SERVICE ASSISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IN CASE OF DIFFICULTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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3

INTRODUCTION

Congratulations on choosing the Carver Professional ZR Series
Amplifier! The ZR Series amplifiers not only have superior fidelity,
they are among the most efficient professional power amplifiers
on the market. By utilizing digital power processing (DPP®), our
ZR series can deliver generous power levels. By design, the ZR

packing materials for future moving, shipment or long-term
storage. After opening the box, please check for visible signs of
damage that were not apparent from the outside of the box. If
you encounter what appears to be concealed damage, please
consult your Carver Professional Dealer before installing unit.

Series power amplifiers are very accurate and efficient. Your
ZR Series amplifier should give you many years of outstanding
service and reliability.

IMPORTANT PAPERWORK

Make sure to save your sales receipt. Your receipt is extremely
important to establish the duration of your Limited Warranty and

UNPACKING

Inside the box you will find; one ZR Series Amplifier, one IEC­type power cord, two Euro-style input connectors, four self-

for insurance purposes. Next, make a note of the serial number,
which is located on the back of the amplifier. Record it in the

space provided below for convenient reference.
adhesive rubber feet, and an owner’s manual and warranty card.
Carefully unpack the amplifier and keep the original carton and

Serial Number: ________________________ Purchased at: ________________________________ Date: _____________

Finally, take a moment to fill out the Warranty Registration Card packed with the amplifier and return it to Carver Professional.

This will allow us to keep you informed about new products as they become available.

POWER SPECIFICATIONS

ZR1000

• 225W per channel into 8 ohm stereo loads,
20 Hz to 20 kHz, with less than 0.5% THD+N

• 350W per channel into 4 ohm stereo loads,
20 Hz to 20 kHz, with less than 0.5% THD+N

• 700W bridged mono into 8 ohms,
20 Hz to 20 kHz with less than 0.5% THD+N

ZR1600

• 300W per channel into 8 ohm stereo loads, 20
Hz to 20 kHz, with less than 0.5% THD+N

• 600W per channel into 4 ohm stereo loads, 20
Hz to 20 kHz, with less than 0.5% THD+N

• 1200W bridged mono into 8 ohms, 20 Hz to
20 kHz with less than 0.5% THD+N

FEATURES - ZR1000 and ZR1600

• High Efficiency Spread Spectrum Switching Amplifier

• Variable Speed, Ultra-quiet Fan Cooling

• 7 LED Level Display, Per Channel, Including Signal Present
and Clip Indicators

• 3 LED Status Display: Ready, Protect and Thermal Overload

• Standby LED Indicates the Amplifier is in Standby Mode

• Level Control Defeat Accessible From Front Panel

• Switched 40 Hz/80 Hz (12 dB/Octave Cut) High Pass Filters

• Switched Soft Knee Clip Limiters

• Soft Start In-Rush Current Limiting

• Individual Ground Lifts for Each Channel Input

• Terminals for Sequencing Power (On/Off)

• Input via Neutrik
Connectors

• Speaker Outputs via 3 Neutrik

®

Combo Connectors and Euro-style

®

Speakon® Connectors

• Power Switch, 3 Positions: ON, OFF, Standby

• AC Line Cord (Detachable IEC Type)

• Optional Accessories:

- Crossover Module

- Four Input Mixer Module with Zone Assignment

- Single and Dual Zone Paging Modules with Variable
Ducking and Zone Assignments

- Expanded Mic / Line Level Input Module

- Computer Control & Monitoring via iON Media Control
Module

- DSP Control of 28 Band Graphic EQ, 5 Band Parametric
EQ, Variable High & Low Pass Filters, Crossover, Adjustable
Limiting and Adjustable Delay via iON Media DSP Tools
Module

CAUTION: To avoid damaging the equipment, DO NOT ground any output terminal of the ZR amplifier.

®

is a registered trademark of Tripath Technology, Inc.

DPP

®

is a registered trademark of Neutrik, Inc.

Speakon

®

is a registered trademark of Neutrik, Inc.

4

Neutrik

SPECIFICATIONS

3.50

PERFORMANCE

THD+N: <0.5% @ rated power (4 ohm), 20-20kHz, 20kHz BW
<0.15% @ rated power (4 ohm), 1kHz
<0.06% @ -10dB referenced to rated power (4 ohm), 1kHz
IMD (SMPTE): <0.2%, 60Hz/7kHz, 4:1, 35Vpeak @ 4 ohms
Dynamic Headroom:
Power Bandwidth: 20-20 kHz @ 4 and 8 ohm loads
Frequency Response: 20-20kHz, +0dB/-1dB
Signal-to-Noise: 100dB, A-Weighted, referenced to 4 ohm rated power, 22kHz BW
Crosstalk: -70dB @1kHz referenced to rated power (4 ohm)
CMRR: 70dB at 1kHz
Slew Rate:
Sensitivity for Rated Power: 0.316Vrms
(Variable settings via jumpers) 0.775Vrms(Factory Preset)

1.23Vrms

2.45Vrms
Input Impedance: 50k balanced
Input Overload:
Protection: Thermal, Short Circuit, Over-current & Over Voltage, self-resetting
Stability: Unconditionally stable into reactive loads
Duty Cycle: Continuous operation at 1/3rd power

POWER REQUIREMENTS

Mains Voltage:

(output power rated at nominal voltage) 100VAC (50-60Hz) ±10%
117VAC (60Hz) ±10%
234VAC (50Hz) ±10%

1.5dB

7V/Sec

20dBu

Maximum Consumption @ Rated Power (4 ohm), 1kHz sine wave:
ZR1000 117VAC (60Hz) 950W/10.6Arms

234VAC (50Hz) 938W/5.35Arms

ZR1600 117VAC (60Hz) 1.53kW/17.8Arms
234VAC (50Hz) 1.48kW/9.09Arms

5

51 2 3 4 6 7 8 10 11 129

READYPROTECT THERMAL

HIGH
PASS

HIGH
PASS

CLIP

LIMITER

40Hz
80Hz

0dB

8

40Hz
80Hz

0dB

8

CLIP

- 3dB

0dB

SIGNAL

- 6dB

- 9dB

- 12dB

CH 2

BRIDGED

MONO

CH 1

SEND

RECV

SEQUENCE

has been removed

See user’s manual

CH2+

CH2-

CH1+

CH1-

MONO+

MONO-

Pin 1+

Pin 1-

Pin 2+

Pin 2-

Pin 1+

Pin 1-

Pin 1+ or 2+

Pin 1- or 2-

CH2 MONO CH1

CH 2

CH

1

–

+

–

+

BRIDGED

This device complies with part 15 of the FCC rules. Operation is subject to the following
conditions: (1) This device may not cause harmful interference and (2) this device must accept
any interference received, i

ncluding interference which may cause undesired operation. Complies

with Canadian ICES-003 Class A specifications.

ZR1600 ULC 117VAC ~ 50/60Hz 1500W

T

16A-125VAC

CAUT ION AVIS

RISK OF ELE CTR ICAL SH OCK

DO N OT OPEN CO VER,

AUTH ORI ZED PER SONN EL

ONLY .

RISQ UE DE C HOC ELE CTR IQU

E

NE P AS OUVR IR CE C ART ER,

RESE RVE AU PER SONN EL

AUTO RIS E.

WARNING

TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT

EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE

17 18 201615 19 21 22

FRONT

1 & 10 – HIGH PASS FILTER SWITCHES

Separate switches on each channel to enable highpass filters. Highpass
filters cut off the lowest frequencies to eliminate rumble and prevent
excess speaker excursion. The filter is enabled when the switch is
pushed in.

2 & 11 – HIGH PASS FILTER STATUS LEDS

Separate indicators on each channel illustrate the highpass filter status.
The LED is dark when the filter is not engaged. A Red color indicates the
cutoff is set at 40Hz, green indicates the cutoff is set at 80Hz.

3 & 12 – HIGH PASS FILTER CUTOFF FREQUENCY
SELECTOR SWITCHES

Separate switches for each channel select the highpass filter cutoff
frequency. When the switches are out, the cutoff is set at 40Hz. When the
switches are in, the cutoff is set at 80Hz.

5 – LEVEL CONTROL DEFEAT

When the switch is in, the level controls are set to 0dB attenuation no
matter what the position of the knobs.

4 & 9 – LEVEL CONTROLS

Sets the amount of signal attenuation, down to a maximum of

-100dB.

6 – SIGNAL LEVEL AND DIAGNOSTIC LEDS

An array of indicators that show the operational status of the amplifier
and the signal level.

PROTECT: Whenever a very low impedance (short circuit) is detected on either of the
outputs, or an over voltage, under voltage or over current situation is detected the amplifier
will protect itself and connected loads by immediately ceasing to drive the output stage.

READY: The amplifier is operational.

THERMAL: Whenever the output section and/or the power transformer exceeds preset

thermal limits, the amp is disabled and will resume once it has cooled.

SIGNAL: Indicates a signal is detected at the input.

–12dB: Indicates the output has reached a level 12dB below rated power.

–9dB: Indicates the output has reached a level 9dB below rated power.

–6dB: Indicates the output has reached a level 6dB below rated power.

–3dB: Indicates the output has reached a level 3dB below rated power.

0dB: Indicates the amplifier is producing full output (or slightly below, depending on load

impedance).

CLIP: Indicates the output signal is reaching approximately 1% distortion.

7 – CLIP LIMITER SWITCH

When the switch is “In” the clip limiter is enabled.

8 – CLIP LIMITER STATUS LED

Indicates when the clip limiter is enabled.

13 – ‘STANDBY’ LED

Indicates that the amp is in Standby mode. When in Standby mode,
the amplifier is turned “OFF”, but the AC Mains are connected and the
amplifier waits for a DC voltage at the Sequence connector on the rear of
the amp. Once a DC voltage is applied to the Sequence connector, the
amp turns “ON” and begins its start-up diagnostics and upon completion
is ready for use.

14 – POWER SWITCH

A three-position switch used to select the power operation mode. In the
center position, power is off. In the up position, power is on. In the down
position, amp is set to standby mode.

6

13 14

A Phoenix Gold International Company

STANDBY

ZR1600

23

INPUT

CH

2

INPUT

CH

1

GND

LIFT

MONO

GND
LIFT

PUSH

PUSH

25 26 27 28 29 3024 31 32 33

REAR

15 – FUSE CARRIER

Holds the AC mains fuse.

16 – AC MAINS CONNECTOR

IEC type power cord attaches here.

17 – SEQUENCE CONNECTOR

Used for sequencing power to multiple amps. (See page 11)

18, 20 & 22 – SPEAKER OUTPUTS

A set of three 4-conductor Neutrik

®

Speakon® NL4 connectors to

connect the amplifier to the speakers.

18 - CHANNEL TWO provides the output of channel two only, on pins 1+/1-.

20 - BRIDGED MONO uses the output of both channels to create a single channel with twice

the power. The output is provided on both pins 1+/1- and 2+/2- of the Speakon
the use of all four conductors to lower the cable resistance. This output should only be used
when the Mono switch is enabled.

22 - CHANNEL ONE actually provides output for channel one AND channel two using a
single 4-conductor cable.
Channel one output is present on pins 1+/1- of the Speakon

present on pins 2+/2-.

®

, and channel two output is

®

, allowing

19 & 21 - SPEAKER OUTPUTS

Two pairs of five-way binding posts to connect the amplifier to the
speakers.

19 - CHANNEL TWO provides the output of channel two across the red(+) post and the
black(-) post.

19 & 21 - BRIDGED MONO uses the output of both channels to create a single channel with
twice the power. The output is provided across the CH 2 red(+) post and the CH 1 black(-)
post. This output should only be used when the Mono switch is enabled.

22 - CHANNEL ONE provides the output of channel two across the red(+) post and the

black(-) post

23 & 32 – BALANCED AUDIO INPUTS

®

Neutrik

Combo connectors which accept male XLR, TS and TRS 1/4´´
phone plugs. By default, XLR pin 2 is hot and Tip is hot. Polarity of the
XLR can be reversed with jumper settings inside the amp. (See page 9)

24 & 31 - BALANCED AUDIO INPUTS

Euro-type connectors used for balanced or unbalanced signals.

25 & 30 – GROUND LIFT SWITCHES

Switches for each channel that disconnect Ground pin of the input
connectors from chassis ground. Used to eliminate ground loop
conditions that cause hum.

26 & 29 – GROUND LIFT STATUS LEDS

These are separate indicators for each channel which light up when the
Ground Lift switches are enabled.

27 – MONO SWITCH

When the switch is ‘in’, the amp is set to Mono mode. Mono operation
causes the signal connected to the channel Two input to drive both
channels. The channel One input is disabled in Mono mode.

28 – MONO STATUS LED

This indicator will light when the Mono switch is engaged.

33 – STANDARD INPUT MODULE

This replaceable module handles the input signals. Available upgrade
modules include a 4X2 mixer, single/dual zone paging modules,
an expanded mic / line level input module, a computer control and
monitoring module, and a DSP module with EQ, crossover, limiter, and
delay.

7

INTERNAL JUMPER SETTINGS

XLR Pin 2 Hot

XLR Pin 3 Hot

0.775V

0.316V

1.23V

2.45V

NOTE: Resetting any of the jumpers on the input card requires that you remove the
top cover. This operation should be performed by a qualified technician only! Always
disconnect the AC Mains when performing this operation.

To access the internal jumpers, remove the top cover of the amplifier. Locate the input
board as shown below.

INPUT POLARITY

JP101 and JP102 are 6 pin headers that are used to change
the polarity of the balanced input jacks. By default, pin 2 is hot.
Changing both jumpers to the opposite position will make pin
3 hot on that channel.

NOTE: Both jumpers on either header

MUST be on the same side.

JP101 or JP102 - Input Polarity

INPUT SENSITIVITY

JP103 and JP104 are 6 pin headers that are used to adjust the
amplifier’s input sensitivity for a wide variety of source levels.
Each channel can be set to any one of four positions:

With no jumper connected, the input sensitivity defaults to

0.775Vrms.

See the illustration below to configure a specific input sensitivity.
The Photo above will show the location of the jumpers on the
input board.

NOTE:

JP103 or JP104 - Sensitivity Adjust

The illustration below shows how the jumpers are configured to
set either Pin 2 or Pin 3 as the “positive” or “hot” pin on the XLR
connector.

0.316Vrms / -10dBV = Full Output

(Commonly seen in consumer devices with low voltage unbalanced outputs)

0.775Vrms / 0dBu = Full Output

(Most common line-level calibration)

1.23Vrms / +4dBu = Full Output

(Commonly seen in professional audio products with balanced outputs)

2.45Vrms / +10dBu = Full Output

(Devices with large voltage swing, used to drive long line-level paths)

8

INSTALLATION & CONNECTIONS

INPUT

CH 2

INPUT

CH 1

GND
LIFT

MONO

GND
LIFT

PUSH

PUSH

UNBALANCED CONNECTION

Better Method Not Recommended

UNBALANCED CONNECTION

Better Method

Not Recommended

UNBALANCED CONNECTION

Better Method Not Recommended

1

2

3

1

2

3

BALANCED CONNECTION

BALANCED CONNECTION

BALANCED CONNECTION

1

2

3

Tip

Ring

Sleeve

1

2

3

+

-

Ground Lift Switch

(Normally Closed)

Neutrik® Combo Connector

Euro-style Connector

MOUNTING

Before you begin, make sure your amplifier is disconnected from
the power source, with power switch in the “off” position and all
level controls turned completely down (counter-clockwise).

Mount in a standard 19-inch (48.3 cm) equipment rack.

NOTE: When transporting amplifiers in a rack, it is
recommended to use the rear rack supports.

ENSURE PROPER COOLING

Do not block rear or side intake slots or front exhaust vent.

TEMP. & HUMIDITY CONSIDERATIONS

Normal operation is expected from -20C to +40C ambient at 1/3
rated power into 4 ohms with humidity non-condensing.

Input Connectors

AC POWER

Connect the supplied AC mains cord to the IEC socket on the
rear panel and to the AC mains, appropriate for your amplifier, to
provide power to the amplifier.

INPUT CONFIGURATION (see figure below)

ZR series amplifiers can be operated in stereo, dual-mono and
bridged mono. Input connections are handled via Neutrik
Combo connectors as well as Euro-style connectors. Fully
balanced input connections can be configured for pin 2 hot or
pin 3 hot. Ground lift switches are provided for each channel to
remove shield ground from chassis ground. Input sensitivity can
be internally configured to any of four industry standard levels
(see page 7). In stereo mode, a separate signal is required for
each channel. In dual-mono and bridged mono, a single signal
is connected into the channel 2 input. The input board supports
connections via XLR, 1/4 inch TRS or TS phone plugs and Euro­style connectors.

®

BALANCED & UNBALANCED CONNECTIONS

The inputs are designed to handle balanced or unbalanced
signals. When using unbalanced signals, it is recommended
that the cable be shielded two-conductor with the shield tied to
ground at the source. If shielded single conductor cable must be
used, tie the shield to ground at both the source and amplifier

Unbalanced Connections Balanced Connections Equivalent Input Schematic - ZR1000/ZR1600 Amplifier

input. In most cases, equipment that has unbalanced outputs will
have lower signal level. In these cases, adjust the amplifier’s gain
using the internal jumper settings as described on page 7. Long
runs of unbalanced signals are prone to loss, noise and hum.
Use balanced signals whenever possible.

(Polarity and gain jumpers omitted for clarity.)

9

INSTALLATION & CONNECTIONS

CH2+

CH2-

CH1+

CH1-

MONO+

MONO-

Pin 1+

Pin 1-

Pin 2+

Pin 2-

Pin 1+

Pin 1-

Pin 1+ or 2+

Pin 1- or 2-

CH2 MONO CH1

Speakon® NL4 Pinout

Sequence

Connector

Send

Rec’

v

Send

Rec’v

Send

Rec’v

+

_

5-15VDC

REMOTE SEQUENCE

Send

Rec’

v

Send

Rec’

v

Send

Rec’

v

LOCAL SEQUENCE

OUTPUT CONFIGURATION

Output connections are handled via 3 female Neutrik®
Speakon
channels can be connected via a single four conductor cable
using the Speakon
1 is connected at Pin1+ and Pin1-, and Channel 2 at Pin2+ and
Pin 2-.

Channel 2 Speakon® Connector

Channel 2 (+) is connected at Pin 1+
Channel 2 (-) is connected at Pin 1-

Channel 2 Five-Way Binding Posts

Channel 2 (+) is connected at the red(+) post
Channel 2 (-) is connected at the black(-) post

®

NL4 connectors. In stereo or dual-mono mode, both

®

NL4 in the channel 1 output jack. Channel

As Illustrated in the Figures Above:

Bridged Mono Speakon

Positive or Non-Inverted Mono output is connected at Pin 1+
Negative or Inverted Mono output is connected at Pin 1­Positive or Non-Inverted Mono output may also be connected at Pin 2+
Negative or Inverted Mono output may also be connected at Pin 2-

Bridged Mono Five-Way Binding Posts

Positive Mono output is connected at the CH 2 red(+) post
Negative Mono output is connected at the CH 1 black(-) post

®

Connector

®

The bridged mono Speakon

jack provides the bridged output
on Pin1+ and Pin1-, or at Pin 2+ and Pin 2-. This allows a
connection to match any loudspeaker configuration.

®

The channel 2 Speakon

output provides channel 2 output at

Pin 1+ and Pin 1- in both stereo and dual-mono mode.

Channel 1 Speakon® Connector

Channel 1 (+) is connected at Pin1+
Channel 1 (-) is connected at Pin 1­Channel 2 (+) may be connected at Pin 2+
Channel 2 (-) may be connected at Pin 2-

Channel 1 Five-Way Binding Posts

Channel 1 (+) is connected at the red(+) post
Channel 1 (-) is connected at the black(-) post

SEQUENCING

For multi-amplifier installations, the sequencing feature limits the
overall inrush current by delaying power up of each amplifier in
the sequence by 1/2 second.

For locally sequenced power up, the power switch on the first
amplifier in the chain will act as the master switch. To power up
the entire rack of amplifiers, you simply turn on the power switch
of the first amplifier. The power switch of the first amplifier
should never be set to “Standby”. All the other amplifiers in the
chain must be set to “Standby,” so they can receive the power­on command from the first amplifier. Locate the Euro-style
connector labeled “Sequence” on the rear panel. Connect a
single conductor from the “SEND,” terminal of the first amplifier
to the “RECV” terminal of the second amplifier in the sequence.
Connect the “SEND” terminal of the second amplifier to the
“RECV” terminal of the third amplifier. Repeat until you reach

10

CAUTION: To avoid damaging the equipment, DO NOT ground any output terminal of the ZR amplifier.

the end of the chain.

NOTE: The last amplifier in the series will not have any connections
at the “SEND” terminal and all sequence ground terminals are
connected either by a 16 gauge stranded conductor (minimum) or via
the common chassis ground provide by a rack rail if rack mounted.
Measuring from the sequence ground to a point on the rack rail
there should be no more than 0.5 ohm DC resistance if the sequence

grounds are not directly connected to each other.

For remote sequenced power up, the power switch on all
amplifiers must be set to the “Standby” position. Apply a
fused external 5 - 15Vdc (greater than or equal to 20mA)
supply voltage to the “RECV” terminal via a switch and the “ ”
terminal. Connect the “SEND” terminal to the next amplifier’s
“RECV” terminal as referenced above for a “local sequence
power up”.

Input Module

Connector P101

INSTALLATION & CONNECTIONS

REPLACING INPUT MODULES

To replace the input module, set the power switch to OFF and
disconnect the AC mains. Locate the input module as shown
in the diagram below. Remove the four sheet metal screws
from the corners of the input module’s front plate. Carefully
disconnect the 20-pin connector from P101. Attach the 20-

pin connector to the new input module. Insert the new input
module, being careful to avoid pinching the internal ribbon
cables between the circuit boards and the metal shielding inside
the amp. Re-attach the four sheet metal screws. Do not remove
the top cover.

TROUBLE SHOOTING

If you are having trouble, or suspect a problem with your ZR Series amplifier, try some simple troubleshooting before contacting
an Authorized Carver Professional Dealer, Authorized Carver Professional Service Center or Carver Professional Technical Service.
Below are listed some general problems and items that should be checked in an attempt to resolve the difficulty.

NO SOUND, NO POWER

This is usually an indication of a power supply problem in either
the power line itself or the amplifier’s power supply. Check the
following:

1) ZR Series amplifier’s power is switched off.

2) Line cord is disconnected.

3) Poor fit between the plug and AC receptacle.

4) Power off at AC receptacle (check with tester or lamp).

5) The amplifier is plugged into a switched outlet. Verify that
the outlet is live.

6) ZR Series amplifier’s mains fuse has blown. This amplifier
contains no user serviceable fuses inside the chassis.

POWER ON, LOW OUTPUT OR NO OUTPUT

Low or no output problems are usually signal-source, bad cable
or partial output short circuit related.

1) The input level sensitivity controls are set too low.

2) Move the input connection to another amplifier that you
know is working to verify that it is not a source problem.

3) Check speaker connections. Be sure that there are no small
strands of wire touching similar strands coming from the other
wire in the cable.

4) Make sure the speakers are functioning correctly.

5) If you are using bridged-mono mode, ensure that the Input
and Output configurations are set correctly.

6) Use a voltmeter to determine if the power line voltage is

dropping excessively when the amplifier is driven hard.

7) The thermal breaker in the power transformer has opened.
Allow amplifier to cool and the breaker will reset itself.

PLAYBACK IS MIXED WITH HUM

1) Check or replace the connecting cables, between source
and amplifier’s input.

2) Make sure that each screw terminal connection is tight.

3) Signal cables may have been routed too closely to the AC
cables, power transformers, motors or EMI inducing device.

4) Try connecting another source to the power amplifier inputs.
If the hum stops, the problem lies with the original source
component.

DISTORTION

Distortion is usually caused by excessive loss in the input
controls (the mixer/equalizer/crossover cannot produce enough
output), overdriving resulting in output clipping, or current
limiting caused by excessively low load impedance.

1) Check the setting of the input level sensitivity controls. If
set too high, the preceding piece of equipment may overdrive
the input stage.

2) Check the speaker connections and verify that all screw
connections are tight and that there are no stray strands of wire
to cause short circuits.

11

LIMITED WARRANTY INFORMATION

ZR SERIES POWER AMPLIFIERS: 5 YEARS*

ZR SERIES MODULES AND ACCESSORIES: 1 YEAR

* NOTE: The following warranty is exclusive to the United States and
its possessions and territories. In all other countries please see your
Carver Professional dealer or distributor for the correct warranty
information in your area or locale.

WHAT IS COVERED

THIS LIMITED WARRANTY COVERS DEFECTS IN MATERIAL AND
WORKMANSHIP ONLY. This limited Warranty DOES NOT extend to: 1)
damage caused by shipment, 2) damage caused by accident, misuse,
abuse, failure to perform owner maintenance, or operation contrary to
the instructions in the Carver Professional owner’s manual, 3) units on
which the serial number has been defaced, modified or removed and

4) damage resulting from modification or attempted repair by any other
person than authorized by Carver Professional.

WHAT WE WILL PAY FOR

Carver Professional will pay all labor and material expenses for items
covered under this Limited Warranty. See the next section concerning
shipping charges.

TO OBTAIN WARRANTY SERVICE

In the event your Carver Professional product requires service, contact
your Carver Professional Authorized Dealer / Contractor or contact
Carver Professional (ATTN: Customer Service Dept.) 9300 North
Decatur, Portland, OR 97203, or call Customer Service Department
directly at [phone]. You will be directed to an Authorized Carver
Professional Service Station or receive instructions to ship the unit to
the factory. Please save the original carton and packing materials in
case shipping is required. Please do not ship parcel post. Include a
complete description of the problem, the associated components and
connections, and a copy of the purchase receipt. Carver Professional
does not pay initial shipping costs. Return shipping costs will be pre­paid if repairs were covered by the scope of this warranty.

KEEP SALES RECEIPT

To obtain coverage under this limited warranty, you must retain and
provide your sales receipt. The warranty period begins from the date
of the first consumer purchase from an Authorized Carver Professional
Dealer. Any implied warranties for merchantability and fitness for a
particular purpose required by any state law are limited in duration
to the warranty period of your product. The warranty set forth above
is exclusive and no other, written or oral is expressed or implied.
Carver Professional specifically disclaims the implied warranties and
merchantability and fitness for a particular purpose.

EXCLUSIONS

In no event shall Carver Professional be liable for property damage,
or any other incidental or consequential damages, which may result

from failure of this product. If your Carver Professional product proves
defective in material or workmanship, the liability of Carver Professional
shall be limited to the repair or replacement, at the option of Carver
Professional, of any defective part.

STATE LAWS MAY DIFFER

Some states do not allow limitations on how long an implied warranty
lasts and/or do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitations may not apply to you.
This warranty gives you specific legal rights, and you may have other
rights, which vary, from state to state.

OTHER IMPORTANT PROVISIONS

Carver Professional reserves the right to make changes in design and
improvements to its products without the responsibility of installing
such changes or improvements on products previously sold by Carver
Professional. We suggest that you attach your purchase receipt to this
Warranty and keep both documents in a safe place. Thank you for your
choice of a Carver Professional Amplifier.

CARE & SERVICE ASSISTANCE

CARE

Wipe off the ZR Series Amplifier’s front panel and chassis from time to
time, with a soft, dry cloth. If you have something stubborn to remove,
use a mild dish soap or detergent sparingly applied to a soft cloth. Don’t
use alcohol, ammonia or other strong solvents.

SERVICE ASSISTANCE

We suggest that you read the Limited Warranty completely to fully
understand your warranty/service coverage. Please promptly complete
and return the Warranty registration card. Also, be sure to save the sales
receipt in a safe place. It will be necessary for warranty service. If your
Carver Professional product should require service, you may contact the
Carver Professional Technical Service Department by calling (503) 978­3343 or by writing to us at the Factory address found on page 11. We
will then direct you to the nearest in our national network of Authorized
Warranty Service Centers, or give you detailed instructions on how to
return the product to us for prompt action. If you should have questions
or comments, please write to the Factory address shown on page 11,
or contact us via email at [e-mail] or at our web site:
www.carverpro.com. Please include the model and serial number of your
Carver Professional product, your complete address and daytime phone
number.

FOR SERVICE OR CUSTOMER SUPPORT INQUIRIES

Carver Professional

Service Department OR Customer Support
9300 North Decatur
Portland, Oregon 97203

SERVICE DEPT CUSTOMER SUPPORT FAX EMAIL

503.9783343 503.978.3344 503.978.3302 [e-mail]

www.carverpro.com