EXONIC EX 680M User Manual

EX 680M

* Monoblock Subwoofer Amplifier

* 2 ohm Stable

* Variable LPF / Bass Booster / Subsonic Filter

* Remote Gain Control

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EEXX 668800MM

INTRODUCTION

Our Amplifiers provide high-performance sound reinforcement for your mobile audio
equipment. Its versatility enables compatibility with optional Equalizers, Frequency
Dividing Network Crossovers, and other audio processors in a customized system. The
Multi-Mode bridging capabilities allow flexibility in hosting several different speaker
configurations.

To achieve optimum performance, We suggest that your stereo components are installed
by an authorized Ample Audio dealer. It is highly recommended that you read this Owners
Manual before beginning installation.

FEATURES

Mosfet Power Supply
RCA Input and Output
Adjustable Input Sensitivity
Variable Subsonic Filter 10-60Hz 24dB/Octave
Lowpass Crossover 30 - 250Hz 12dB/Octave
Variable Bass Booster 0-18dB 45Hz
Remote Gain Control
Bare Wire Set Screw Terminal Block
Thermal/Short/Overload Protection Circuitry

WARNING

High powered audio systems in a vehicle are capable of generating “Live Concert” high
levels of sound pressure. Continued exposure to excessively high volume sound levels may
cause hearing loss or damage. Also, operation of a motor vehicle while listening to audio
equipment at high volume levels may impair your ability to hear external sounds such as;
horns, warning signals, or emergency vehicles, thus constituting to a potential traffic
hazard.

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EEXX 668800MM

PLANNING YOUR SYSTEM

Before beginning the installation, consider the following:

a. If you plan to expand your system by adding other components sometime in the

future, ensure adequate space is left, and cooling requirements are met.

b. Should you use high or low level inputs?

Your Amplifier has been designed to accept either High-Level(

speaker outputs

from your radio

) or Low-Level (

Pre-Amp outputs from your radio)

signal source.
If your radio/source is equipped with Pre-Amp outputs, it is possible to utilize them
to drive the Amplifier and connecting (

Amplifier

) to the 2 rear speakers.

Then, use the built-in power of your radio to drive the 2 front speakers.

NOTE :
Distortion level is considerably lower from Pre-Amp (Low Level) outputs,
than speaker(High Level) outputs.

c. Are your components matched? The peak power rating of your speakers must

be equal or greater than the Amplifier’s. They also must be 2 - 8 Ohms impedance.

(This information is normally printed on the speaker magnet)

d. Consider both the length of your leads, and routing when determining the

mounting location. Pre-Amp input Jacks require a length

(depending on location)

of high quality shielded male to male RCA patch cord.

MOUNTING YOUR AMPLIFIER

The mounting position of your Amplifier will have a great effect on its ability to dissipate
the heat generated during normal operation. Ample Audio has designed the heatsink for
maximum heat displation and also designed with a thermal shut down protection circuit,
making it reasonably tolerant of mounting variations. Any configuration which allows
moving air to be directed over the cooling fins will improve heat dissipation dramatically.
DO NOT enclose the amplifier in a small box or cover it so that air cannot flow around fins.
Temperatures in car trunks have been measured as high as 175 F (80 ) in the summer
time. Since the thermal shut-down point for the Amplifier is 185 F (85

), it is easy to see
that it must be mounted for maximum cooling capability. To achieve maximum
advantage of convection air flow in an enclosed trunk, mount the amplifier in a vertical
position, on vertical surface.
Cooling requirements are considerably relaxed when mounting inside the passenger
compartment since the driver will not often allow temperatures to reach a critical point.
Floor mounting under the seat is usually satisfactory as long as there is at least 1 inch

(2cm)

above the Amplifier’s fins for ventilation.

a. Select a suitable location that is convenient for mounting and is accessable for wiring

with ample room for air circulation and cooling.

b. Use the amplifier as a template to mark the mounting holes. Remove the

Amplifier and drill 6 holes. USE EXTREME CAUTION, INSPECT UNDERNEATH
SURFACE BEFORE DRILLING.

c. Secure the Amplifier using the screws provided.

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EEXX 668800MM

CONNECTING THE POWER

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MMAAKKIINNGG CCOONNNNEECCTTIIOONN TTOO TTHHEE +1122 VVOOLLTT SSUUPPPPLLYY WWIIRRIINNGG((FFiigg.. 11))

8 GAUGE

(Thicker if planning for additional Amplifiers)

wire is recommended for
both the power and ground wires. 16 Gauge, for the remote turn-on wire. Both
types available at most Mobile Audio Dealers or Installation Shops.

GGRROOUUNNDD::

To Vehicle Chassis

To avoid unwanted engine noise caused by ground loops, it is essential that the
Amplifier be grounded to a clean, bare, metal surface of the vehicle’s chassis.

NOTE
GGRROOUUNNDD WWIIRREE SSHHOOUULLDD NNOOTT BBEE EEXXTTEENNDDEEDD MMOORREE TTHHAANN 33 FFTT.. (( 11 MMEETTEERR))..
UUSSIINNGG TTHHIISS MMEETTFFOODD CCAANN CCAAUUSSEE TTUURRNN OONN AANNDD TTUURRNN OOFFFF TTRRAANNSSIIEENNTTSS ((NNOOIISSEE))

++1122 VVoolltt ((FFuusseedd)) CCoonnssttaanntt PPoowweerr ::

To Battery (+)

Due to the power requirements of the Amplifier, this connection should be made
directly to the positive (+) terminal of battery. For safety measures, install an in-line
fuse holder (not included) as close to the battery positive (+) terminal as possible.
With an ampere rating not to exceed total value of fuses in amp.

Fuse : 25A x 3

RReemmoottee TTuurrnn--OOnn IInnppuutt

:

To Power Antenna output of Car Stereo

This Amplifier is turned “ON” remotely when the vehicle’s stereo is turned “ON”.

NOTE
IF YOUR RADIO DOES NOT HAVE A 12 VOLT OUTPUT LEAD WHEN THE RADIO IS TURNED ON, “RMT”

TERMINAL ON THE AMPLIFIER CAN BE CONNECTED TO VEHICLE’S ACCESSORY CIRCUIT THAT IS
LIVE WHEN THE KEY IS “ON”.

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EEXX 668800MM

BBAASSSS BBoooosstt

Varies from 0 dB to 18dB of boost.

Frequency adjustment control for bass control filter.

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Frequency adjustment control for the subsonic filter adjustable

10-60Hz.

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When the switch is in the FULL

position, the signal is

bypassed.

XX-- OOVVEERR LLOOWW--PPAASSSS

When the switch is in the position LPF the low-pass
crossover is active.
The low-pass crossover is continuously variable from 30Hz to
250Hz.

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The input sensitivity adjustments range from 0.2V to 9V to easily
integrate with any quality, aftermarket or source unit.

AAUUXXIILLIIAARRYY OOUUTTPPUUTT

The Aux outputs offer easy system expansion.
Routing signal from a source unit, pre-amplifier or equalizer is a
matter of routing RCA' s into the RCA inputs and out through the
line-level outputs to the next amplifier.

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+ +

Lowest recommended impedance is 2-4ohm mono
RCA inputs are connected to both left and right channels
Gain controls to be set to match input source
Line output is configured summed bridged which is ideal for subwoofer

applications

EEXX 668800MM

MMOONNOO CCHHAANNNNEELL CCOONNFFIIGGUURRAATTIIOONN

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EEXX 668800MM

TROUBLESHOOTING

Before removing your Amplifier, refer to list below and follow suggested procedure.
Speakers and their wires should be tested first.

No Output:

a. confirm that all terminal strip connections are firmly connected.
b. Check the in-line and built-in fuse both the "12V" and " Remote" terminals must

have 12V. Your ground terminal should read ground.

c. Confirm that signal source(

Car Radio/Deck, EQ, X-over etc

.)is connected and is
supplying output signal.
To confirm that Amplifier is working, connect an RCA patch cord to LEFT & RIGHT
low-Level inputs of Amplifier only(

Do not connect the other end of the patch cord

).

Briefly tap the center pin of each(

disconnected

) RCA plug on the other(

disconnected

)

end with your finger. This should produce a noise(

feedback

) in the speakers.

d. If the Amplifier is hot, refer to section “ . PROTECTION CIRCUIT”.

Only One Channel Works:

a. Confirm that speaker terminal strip connections are firmly connected.
b. Check “BALANCE” control on Car Stereo(

or signal source

) to verify it is at mid-point.

c. If using RCA Low-Level inputs, reverse the input plugs at the Amplifier(

right to left or

vice versa

).
If the channel that is silent reverses position, the problem is in the Car Stereo
(

EQ, X-over, or other signal source

) or connecting cable.

Weak Output

a. Check Input Sensitivity control adjustment.

Noise in Audio

a. If noise is a “whine” that goes up and down with engine speed, confirm that

Amplifier and any other source unit(

Radio, EQ, X-over etc

.) is properly grounded.

b. A “clicking” or “popping” noise at a rate that follows engine speed is generally

induced by the vehicles’s charging system.
Confirm that the vehicle is equipped with resistor plugs and plug wires, or your charging
system may need to be serviced.

c. Speaker and input wires should not be routed next to wires that interconnect lights

and other accessories/equipment.

d. If above steps do not improve/clear noise interference, the system should be

checked by a professional mobile audio installer.

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EEXX 668800MM

SPECIFICATIONS

EEXX 668800MM
Total Peak Power : 1300W
RMS Pwr/CH, 4 Ohms : 450W x 1ch
RMS Pwr/CH, 2 Ohms : 680W x 1ch
THD (1w) : 0,3%

(RMS) : 0,1%
Signal/Noise Ratio : 95dB
Channel Separation : 75dB
Frequency Response 0.5dB : 10Hz-35kHz
Crossover Frequency , LPF : 30Hz-250Hz
Bass Boost( 45Hz) : 0dB - 18dB
Subsonic Filter : 10Hz-60Hz
Adjustable Sensitivity Range
Low Level : 200mV-9V
Input Impedance
Low Level : 10k Ohms
High Level : 100 Ohms
Fuse : 25Amp x 3
Dimension : 14"(L) x 2.4"(H) x 8.7"(W)

FEATURES AND SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.

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WWAARRRRAANNTTYY GGUUIIDDEESS && PPRROOCCEEDDUURREESS

If trouble develops, reture the product to your

AAmmppllee AAuuddiioo

dealer prepaid along with
proof of the date of original purchase and the name of the original dealer. The dealer will
repair or at manufacturer’s option, replace the product under the terms of the warranty.
The product will be returned prepaid to you. Ample Audio nor its dealers will be responsible
for shipping damage if units are improperly packed. For shipping, moving, etc, we
recommend you retain the original packing materials and/or cartons.
If there is not a

AAmmppllee AAuuddiioo

dealer convenient to you, write or call

AMPLE AUDIO, INC.
6767 8th Street
Buena Park CA 90620
Phone: [phone] Fax: [phone]

You will be notified where to send the product for repairs.

AAmmppllee AAuuddiioo

warrants this product to be free from defects in material and workmanship for
period of one (1) year from the date of sale to the original consumer purchaser.
AAmmppllee AAuuddiioo

will repair free of charge or, at its option, replace any defective products
covered by this warranty, provided you deliver the product along with your sales slip to
your

AAmmppllee AAuuddiioo

dealer or ship the product prepaid to

AAmmppllee AAuuddiioo

as noted. This
warranty does not cover any expenses incurred in the removal and re-installation of this
product.
This warranty does not apply to any

AAmmppllee AAuuddiioo

product damaged by accident, misuse,
abuse, improper line voltage, fire, water, lightning, or other act of God, nor does it apply to
products which have been repaired or altered by unauthorized personnel.This warranty
does not cover cartons, broken or marred cabinets or any other components and accessories
used in connection with the product or consequential damage due to a defect in the
product.
All implied warranties are limited to the duration of this warranty.
This is the complete warranty by

AAmmppllee AAuuddiioo

and no other expressed warranty is valid
against .
Some states do not allow limitation on how long an implied warranty lasts or an exclusion
or limitation of incidental or consequential damages, so the above limitations or exclusions
may not apply to you. This warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.

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EEXX 668800MM