Cerwin Vega EXL 1000D Installation Manual

CERWIN-VEGA!
MOBILE AUDIO

POWER AMPLIFIER

Operation and Installation Manual

EXL 1000D

CV EXL 1000D Manual 5/21/04 4:35 PM Page 1

CERWIN-VEGA! EXL1000D POWER SYSTEM AMPLIFIER

TABLE OF CONTENTS

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Input Connections and Audio Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Connections for Power and Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Mounting Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Wiring Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Setting the Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Setting the Crossover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Setting the Bass Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Final System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Product Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

The Cerwin-Vega! EXL1000D is a full-featured
two-channel amplifier incorporating
the following features:

• Advanced circuit design that features
bridgeable and mixed mode operation for use
in various systems, including those with
satellite speakers and/or subwoofers

•Variable high-pass/low-pass electronic
crossover with a selectable 12 or 24dB per
octave slope and full adjustable range (from
50Hz to 5.5kHz) to aid in audio system design

•Variable bass boost circuit to reinforce low
frequency signals that may be lost due to

subwoofer box design

• Adjustable input level controls with ground loop
isolation accepting a wide range of input signals

• Remote turn-on with “soft start” muting to
prevent turn-on “thump”

• Pulse-width modulated (PWM) MOSFET
power supply with low AM RFI and protection
circuits for overheating and speaker shorts

• 2-ohm load capability to drive a variety of
speaker systems

• Nickel-plated input/output connectors and an
external automotive type fuse

•Power save lowers the current drawn when
system volume is reduced

To start enjoying your new Cerwin-Vega! two­channel amplifier, please read the instructions
listed in this manual. Keep all instructions for
future reference. Please fill out and send in the

enclosed warranty card to protect your purchase
and aid in warranty service. Also, save your
original sales receipt as proof of purchase.

INTRODUCTION

ABOUT THE MANUAL AND WARRANTY

Thank you for purchasing a Cerwin-Vega! car audio amplifier. This power amplifier has been
designed to provide high quality performance with a minimum of maintenance. However, it’s
performance will only be as good as the care and quality of components with which it is installed.
We therefore advise that you read these instructions very carefully to familiarize yourself with the
product and it’s features.

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OPERATION AND INSTALLATION MANUAL

1

1

2

3

45 6 78 9

INPUT

L

R

REMOTE

LEVEL CONTROL

PORT

GAIN

MIN

MAX

SUBSONIC

FILTER

OFF

ON

15

dB

BASS

BOOST

0

LOW PASS

XOVER

FREQ Hz

55

240

110

550

330

24 dB

12dB

12 dB STEREO

24 dB MONO

LPF

FLAT

AMP

MODE

STEREO

MONO

BRIDGED

BRIDGED-R IN

XOVER
SLOPE

1. RCA Input Jacks

2. Remote Level Control Port

3. Remote Gain Control

4. Subsonic Filter

5. Bass Boost Level

6. Low-Pass X-Over Frequency

7. X-Over Slope 12 dB/24 dB Oct.

8. LPF/Flat Mode

9. Amp Mode

The Cerwin-Vega! EXL1000D two-channel
amplifier provides 2x270 watts of power into a 4
ohm load and 2x500 watts of power into a 2 ohm
load and 1,000 watts bridged into mono at 2 ohm.
This full featured model is an excellent choice for a
variety of car audio sound system configurations.

The EXL1000D uses an unregulated MOSFET
power supply for superior control of output
wattage. A toroid-coil transformer yields
maximum power transfer with minimum heat loss.
Careful attention to circuit design keeps AM RFI at
low levels, so you won’t hear unwanted noise
when the level is cranked up. Protection circuits

safeguard the amplifier when overheating and
speaker shorts or improper load conditions occur.

All connections and controls of the EXL1000D are
on the end panels and are easy to understand. We
use nickel-plated RCA and barrier connectors to
ensure the best electrical connection for your
system. Included is an external automotive type
fuse that is easy to replace.

DESCRIPTION

INPUT CONNECTIONS AND AUDIO CONTROLS

The front panel of the EXL1000D contains
connections for RCA Inputs, Pass Through Outputs
and Audio Controls as shown below. The nickel-

plated RCA Input and Output Connectors and are
labeled as LEFT and RIGHT.

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CERWIN-VEGA! EXL1000D POWER SYSTEM AMPLIFIER

2

Gain Control - This allows you to set the

nominal operating level of the amplifier. The
amplifier’s range, 250mV to 2.4V for RCA inputs,
can accommodate input levels from virtually any
brand of source unit.

Bass Boost Control - The amplifier also features

a “high-Q” (i.e. narrow frequency band) Bass
Boost circuit. It acts much like an equalizer, with
adjustable gain (from 0 to +18dB) fixed at 45Hz.
Use this feature to tune low frequency audio
response to compensate for a less than ideal
subwoofer enclosure design. The added boost
produces rich, full bass tones that are normally
difficult to reproduce in the car audio
environment. NOTE:If Bass Boost is undesired, set
Bass Boost to 0dB.

Pass Through - This allows you to “daisy chain”

multiple amplifiers by internally splitting off the
RCA Input to the Pass Through output. (The Pass
Through output signal will be identical to the input
signal. For example, full range in equals full range
out, 50Hz low-pass in equals 50Hz low-pass out.)

Power Save - When engaged,the amplifier will

automatically minimize the current drawn while the
amplifier is idle or the system volume is at a low
level. This feature increases your amplifier’s
efficiency by not drawing unnecessary current.

Low Impedance (One-Ohm Mode) LED -

Indicates when amplifier detects a low impedance
environment.The amplifier will automatically switch
to one-ohm mode and the LED will illuminate.

Frequency (Hz) Selection Control - The

crossover frequency is fully adjustable between
50Hz and 5500Hz (via the Crossover Frequency
Multiplier) for a wide range of crossover points.
Use this feature, along with your speaker
manufacturer’s recommended crossover frequencies,
to quickly design a more advanced system (see
Applications on page 5.) NOTE: If the X-Over Mode
Switch is set to FULL, varying the Freq (Hz) Control
will produce no effect.

Crossover Frequency Multiplier Switch -

When engaged, this switch increases the crossover
frequency by a factor of 10. Example: If the Freq
(Hz) dial is set for 240 Hz, pushing in the multiplier
Switch changes the setting to 2400 Hz.

X-Over Mode Switch - This switch is equipped

with a selectable 12 or 24dB per octave electronic
filter for precise frequency attenuation with
minimal phase distortion.The steep crossover slope
keeps midrange tones out of the subwoofer and
thereby eliminates an unnatural “nasal” tone
quality in the audio system. A filter is activated by
sliding the X-Over Mode Switch to either LP or HP.

Input Mode Switch - This switch allows you to

set the input mode. Stereo input allows full left
and right stereo operation. Right (bridged) input
allows single channel input for bridged operation.
This is especially useful in high-powered systems
when using one amplifier for each subwoofer/speaker.
L + R (sum mono) allows a stereo input to be summed
into a mono output.

HIGH-PASS/LOW-PASS FILTER CONTROLS

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