Cerwin Vega EXL 1200D Installation Manual
CERWIN-VEGA!
MOBILE AUDIO
POWER AMPLIFIER
Operation and Installation Manual
EXL 1200D
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CERWIN-VEGA! EXL1200D POWER SYSTEM AMPLIFIER
TABLE OF CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Input Connections and Audio Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Connections for Power and Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Mounting Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Wiring Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Setting the Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Final System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Product Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
The Cerwin-Vega! EXL1200D 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
bridged amplifiers and dual voice coil
subwoofers
•Variable subsonic/lowpass crossover with
24dB per octave slope and full adjustable
range (from 15Hz to 150Hz) 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 control 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
• 1-ohm load capability to drive a variety of
speaker systems
• Gold-plated input/output connectors and an
internal fuse bank
•Power save lowers the current drawn when
system volume is reduced
• Phase Select Switch
• Master / Slave Ability
To start enjoying your new Cerwin-Vega! ClassD monoblock 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
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Congratulaitons on your purchase of this quality
CERWIN VEGA car audio amplifier. The EXL1200D
amplifier has been engineered in the UNITED
STATES with the latest technology to give you the
best most efficient operation available today.
We want you listening for a lifetime. That means
you should be a responsible listener and take care
of your ears. This amplifier is capable of producing
sound pressure levels that can cause PERMANENT
HEARING damage if caution is not used. Louder
levels can cause hearing damage in a very short
time period while much lower levels can cause
damage through prolonged exposure.
Over time the human ear adapts to the levels of
sound pressure causing loud sounds to sound more
normal and become more dangerous. Here is a list
of some sound pressure examples. Please note
that it has been determined that continued
exposure to sounds above 90 dB are hazardous.
The louder the sound the shorter the duration of
hazardous exposure!!!
40 dB Refridgerator
50 dB Light traffic, conversation
60 dB Air conditioner at 20 feet
70 dB Vacuum cleaner
80 dB Noisy traffic corner
90 dB Subway, motorcycle, lawn mower
100 dB Garbage truck, chain saw
120 dB Live Band, riveter
140 dB Gunshot blast, jet plane
CONGRATULATIONS!
The Cerwin-Vega! EXL1200D Class-D Monoblock
amplifier provides 500 watts of power into a 4 ohm
load and 900 watts of power into a 2 ohm load and
1,200 watts into mono at 1 ohm. This full featured
model is an excellent choice for a variety of car
audio sound system configurations.
The EXL1200D uses an unregulated MOSFET
power supply for superior control of output
wattage. Dual toroid-coil transformers yield
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 EXL1200D are
on the end panels and are easy to understand. We
use gold-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
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CERWIN-VEGA! EXL1200D POWER SYSTEM AMPLIFIER
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FRONT AND REAR CONNECTIONS AND AUDIO CONTROLS
The front panel of the EXL1200D contains
connections for RCA Inputs, Speaker and Audio
Controls as shown below.
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OPERATION AND INSTALLATION MANUAL
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SENSITIVITY RANGE SELECTOR AND
CONTROL – The switch allows you to select and
adjust the nominal operating level of the
amplifier. The range is selectable from either 100
mV to 2.0 V. or 2 V. to 8.0 V.
SUBSONIC FILTER – This allows you to tune the
response of the amplifier at very low frequencies.
This can increase efficiency of your system and
even protect your drivers from over excursion in
vented boxes.
LOW PASS FREQUENCY CONTROL – This
allows you to tune the response of the amplifier at
higher BASS frequencies to match your systems
requirements.
PHASE SWITCH – Used to invert the Phase of
the output to the speaker.
BASS BOOST CONTROL – Again used to tune
amplifier response by adding up to 18 decibels of
Boost at 42 HZ.
POWER and PROTECT led indicators – When
the unit is powered on and operating correctly the
POWER led will illuminate. When the unit is on
but in a fault condition the PROTECT led will
illuminate
SPEAKER TERMINAL BLOCK – GOLD PLATED
solid brass machined terminals for delivering very
high current to the speakers.
GOLD PLATED RCA INPUTS – The RCA input
terminals are GOLD PLATED to ensure the highest
quality contacts and the lowest noise in your
audio system.
DATA LINK - The best way to use two amplifiers
is to use the DATA LINK cable provided. This
feature synchronizes the POWER SUPPLY and
HIGH CURRENT OUTPUT STAGE of the SLAVE
amplifier to the MASTER amplifier. This in turn
increases efficiency, and SPL while reducing noise
and eliminating the need for any adjustments of
the slave amplifier controls.
BRIDGE MODE SELECTOR SWITCH - For
installations using one amplifier set this to
MASTER. When installations include two
amplifiers setting this switch to SLAVE (in
conjunction with using the DATA LINK CABLE) will
cause the SLAVE amplifier to function identical to
the MASTER amplifier.
REMOTE BASS CONTROL – Use this control to
control BASS levels from the comfort your of
drivers seat.
FUSE BANK – These are the fuses.
POWER, REMOTE, GROUND INPUT BLOCK –
Battery power, Ground, and Remote input
connections are made here.
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