Audiovox Stereo Amplifier AMP 604 User Manual

Model AMP-604  
240 Watt 4-Channel  
Power Amplifier  
Owner's  
Manual  
 
HIGH PERFORMANCE STEREO 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  
youreadtheseinstructionsverycarefullytofamiliarizeyourselfwiththeproductand  
it's features.  
HELP!  
1-800-645-4994  
Monday - Friday  
Saturday  
8:30am - 7:00pm Eastern  
9:00am - 5:00pm Eastern  
Should you require assistance with the installation or wiring of this unit, please call  
our toll-free "HELP" line at 1-800-645-4994 during the days/hours shown.  
SPECIFICATIONS  
Maximum Output Power:  
Output Impedance:  
Frequency Response:  
Channel Separation:  
Signal / Noise Ratio:  
Input Impedance:  
60 watts x 4 @ 4 ohms  
4 - 8 ohms  
Input Sensitivity:  
low-level 200 mv. - 2 v.  
high-level 2 - 10 v.  
12 volts, negative ground  
10 amps.  
Supply Voltage:  
Fuse Rating:  
20 - 25,000 Hz. ± 1 dB  
50 dB  
Dimensions (W x H x D): 6-3/8" x 2-1/8" x 9-1/10"  
162 mm x 54 mm x 231 mm  
80 dB (A-Weighted)  
low-level 10K ohms  
high-level 100 ohms  
* Due to continuing improvement, Audiovox reserves the right to change features and design without notice.  
-1-  
 
PRECAUTIONS  
1. Although this unitisdesignedwithbuilt-inself-protectioncircuits, theremaybeapossibilityofdamageifitisnotwired  
correctly. Please follow the wiring instructions carefully for the type of system being used.  
2. The last lead to be connected is the wire to the positive (+) terminal of the battery. Connect this wire only after having  
completed and checked all other connections to the amplifier.  
3. By nature of its design, a power amplifier generates heat and requires good air circulation around it to dissipate that  
heat. Do not install the amplifier in an enclosed area which does not permit adequate air circulation. Should the  
temperature of the unit rise too high, the internal thermal sensors will shut off operation until it has cooled down  
sufficiently.  
4. If fuse replacement is necessary, use only fuses of the same ampere rating as originally supplied with the unit. The  
use of fuses with incorrect ratings may cause serious damage to the amplifier. If fuses blow consistently, carefully  
check all electrical connections to the unit.  
5. Supply of adequate battery voltage is critical to the proper operation of the power amplifier. The leads to the battery  
and chassis ground must be of a thick enough gauge to provide this voltage to the amplifier. We recommend  
#18 gauge wire or thicker (smaller gauge #) for the battery and ground leads.  
6. Make certain that the speakers to be used with this amplifier are capable of handling the output power (wattage)  
of the unit. Use of speakers not rated for the output of this amplifier may cause damage to or failure of the  
speakers for which Audiovox will not be liable.  
-2-  
 
INSTALLATIONDIAGRAM  
INSTALLATION INSTRUCTIONS  
SELF-TAPPING SCREW  
1. Select a mounting area where the amplifier will  
have sufficient air circulation for proper cooling.  
Inadequateaircirculationwillcausethetemperature  
of the amplifier to rise and will trigger the  
thermal protection mode.  
2. Place the amplifier on the mounting surface  
and mark the locations of the four mounting  
holes as shown in the illustration.  
3. Remove the amplifier and drill a 1/8" hole at  
each of the four locations.  
CAUTION: Before drilling the holes, look at the  
underside of the mounting surface. Always  
check carefully to avoid drilling into wiring,  
braces, fuel or brake lines. CHECK BEFORE  
YOU DRILL !  
4. Secure the amplifier to the mounting surface  
using the self-tapping screws provided.  
1/8" DIA. HOLE  
MOUNTING SURFACE  
-3-  
 
WIRING INSTRUCTIONS  
The power connections for this amplifier are made via screw tightened terminal blocks. Loosen the screw for the  
connection to be made and fully insert the wire (strip 1/2" of insulation from the end) into the respective screw on the side  
panel (crimp-on "U" terminals are provided to simplify wiring and we recommend their use.) Tighten the screw down to  
secure the wire.  
1. Power Connection  
The battery terminal (BATT) must be connected directly to the positive terminal of the vehicle battery to provide an  
adequatevoltagesourceandminimizenoise. Connectingthebatteryterminalleadtoanyotherpoint(suchasthefuseblock)  
will reduce the power output and may cause noise and distortion. Use only #18 gauge or thicker (smaller gauge #) wire  
for this lead and connect it to the terminal of the battery after all other wiring is completed.  
2. Ground Connection  
The ground terminal (GND) connection is also critical to the correct operation of the amplifier. Use a wire of the same  
gauge as the power connection (#18 or thicker) and connect it between the ground terminal (GND) of the amplifier and  
a metal part of the vehicle close to the mounting location. This wire should be as short as possible and any paint or  
rust at the grounding point should be scraped away to provide a clean metal surface to which the end of the ground  
wire can be screwed or bolted.  
3. Remote Turn-On Connection  
The amplifier is turned on by applying +12 volts to the remote turn-on terminal (REM). The wire lead to this terminal  
should be connected to the "Auto-Antenna" lead from the car stereo which will provide the +12 volts only when the car  
stereo is turned on. If the car stereo does not provide an Auto-Antenna lead, the remote turn-on lead may be wired  
to an "Accessory" or "Radio" terminal in the car's fuse block. This will turn the amplifier on and off with the ignition key,  
regardless of whether the car stereo is on or off. The remote turn-on lead does not carry large currents, so #20 gauge  
wire may be used for this application.  
-4-  
 
WIRING INSTRUCTIONS  
4. Speaker Connections  
Wire the speakers to the "Speaker Output" terminals as per the Output Wiring Diagram (remove 1/4" of insulation  
from the end of each wire, depress the spring tab on the connector, insert the wire and release the spring tab). For  
most applications, #18 gauge wire should be used for the speaker leads but in no case thinner than #20 gauge. When  
wiring the speakers, pay careful attention to the polarity of the terminals on the speakers and make certain they  
correspond to the polarity of the corresponding terminals on the amplifier. DO NOT ground any speaker leads to the  
chassis of the vehicle.  
5. Input Connections  
This amplifier features both high and low-level input capability. Use either the low-level or high-level inputs, not both.  
If low-level outputs are provided from the car stereo, it is recommended that the low-level inputs be used for lowest  
distortion and best performance. Use good quality shielded audio cables with RCA plugs at both ends to connect the  
stereo to the amplifier and keep the cable lengths to a minimum to avoid noise.  
Ifthecarstereodoesnotprovidelow-leveloutputs, theamplifiermaybeconnectedviathespeaker(high-level)outputs  
from the stereo. Wire the positive (+) speaker leads from the car stereo to the 5-pin adaptor harness as shown in the  
diagram (shielded cable is not required for this application) and plug the connector into the mating High-Level Input  
socket on the amplifier. Carefully splice and insulate all wire connections.  
CAUTION: Use either the low-level or the high-level inputs on the amplifier.  
DO NOT use both input levels at the same time.  
-5-  
 
INPUT WIRING DIAGRAM  
LOW-LEVEL RCA OUTPUTS  
HIGH-LEVEL  
(SPEAKER) OUTPUTS  
RIGHT FRONT  
CAR STEREO  
RIGHT REAR +  
LEFT REAR +  
RIGHT FRONT +  
LEFT FRONT +  
NOTE: WhenusingHigh-Level(Speaker)Outputs  
of car stero, connect only the Positive (+)  
wires to the amplifier. Do not use Negative (–)  
Outputwires (insulate ends with tape and  
leave disconnected).  
LEFT FRONT  
LEFT REAR  
CHASSIS GROUND ON RADIO  
RIGHT REAR  
IMPORTANT  
USE EITHER HIGH-LEVEL OR  
LOW-LEVEL INPUTS, NOT BOTH.  
5-PIN  
CONNECTOR  
RCA TYPE  
SHIELDED CABLES  
(NOT INCLUDED)  
LOW INPUT  
PWR  
HIGVEL  
MIN M
GAI
MAX  
TO CH4  
TO CH3  
TO CH1  
TO CH2  
-6-  
 
WARNING!  
OUTPUT WIRING DIAGRAM  
lTHIS AMPLIFIER IS DESIGNED FOR USE WITH 4 SPEAKERS  
lNEVER COMBINE (BRIDGE) OUTPUTS FOR USE WITH 2 SPEAKERS.  
lNEVER GROUND NEGATIVE SPEAKER LEADS TO CHASSIS GROUND.  
lFAILURE TO WIRE CORRECTLY MAY CAUSE DAMAGE TO THE AMPLIFIER.  
-
-
m
m
LEFT REAR  
SPEAKER  
4 - 8 OHMS  
LEFT FRONT  
SPEAKER  
4 - 8 OHMS  
EXISTINGSCREWORBOLT  
CLEAN PAINT, RUST, DIRT  
OR GREASE FROM AREA  
FOR GOOD CONNECTION  
+
+
m
m
GROUNDED METAL  
SECTION OF VEHICLE  
USE #18 GAUGE  
WIRE (SEE TEXT)  
CONNECT THIS  
WIRE LAST  
POWER  
REM GND  
FUSE  
SPEAKER OUTPUT  
BATT  
12 VOLT VEHICLE  
CHASSIS  
GROUND  
BATTERY  
AUTO-ANTENNA LEAD  
+
+
m
m
RIGHT FRONT  
SPEAKER  
RIGHT REAR  
SPEAKER  
4 - 8 OHMS  
CAR STEREO  
4 - 8 OHMS  
-
-
m
m
-7-  
 
OPERATION  
2
3
2
1
POWER  
REM GND  
SPEAKER OUTPUT  
LOW INPUT  
FUSE  
HIGH LEVEL  
BATT  
PWR  
MIN MAX  
GAIN  
MIN MAX  
GAIN  
After initial set-up, the amplifier should not require any  
further adjustment unless there is a change in the car  
stereo or speaker system with which it is used.  
increase the output from the system. If, however, there  
is still output from the amplifier when the car stereo  
volume control is at its minimum setting, or the output  
levelincreasestoofastwithasmallrotationofthevolume  
control, adjust the Level control to decrease the output  
from the system. Once the correct setting is found, these  
controls should not require any further adjustment.  
1
Power Indicator LED  
The Power Indicator LED will light to indicate that the  
unit is connected to the battery and that the Remote  
Turn-On terminal is receiving +12 volts, thus turning  
on the amplifier.  
3
Fuse  
The circuitry of the amplifier is protected from damage by  
an automotive-type fast-blow fuse. If fuse replacement is  
necessary, use only fuses of the same ampere rating as  
originally supplied with the unit. The use of fuses with  
incorrect ratings may cause serious damage to the  
amplifier. If fuses blow consistently, carefully check all  
electrical connections to the unit.  
2
Level (Gain) Controls  
The amplifier is capable of operating from sources  
supplying a wide range of input levels. The Level  
control should initially be set to the mid-rotation position.  
Ifitisfoundthatthereisnotenoughoutputevenwhenthe  
volumecontrolonthecarstereoisatitsmaximumsetting,  
adjust the Level control of the respective channels to  
-8-  
 
90 DAY/12 MONTH LIMITED WARRANTY  
Applies to car stereo power amplifiers, equalizers and accessories.  
AUDIOVOX CORPORATION (the Company) warrants to the original retail purchaser of this product that should this product or any part thereof,  
under normal use and conditions, be proven defective in material or workmanship within 90 days from the date of original purchase, such  
defect(s) will be repaired or replaced with new or reconditioned product (at the Company's option) without charge for parts and repair labor.  
After the initial 90 day period and for a period of 12 months from the date of original purchase, the Company will supply at no charge a  
replacement for any defective part(s) but will charge for the labor to repair the product.  
To obtain repair or replacement within the terms of this Warranty, the product is to be delivered with proof of warranty coverage (e.g. dated  
bill of sale), specification of defect(s), transportation prepaid, to an approved warranty station or the Company at the address shown below.  
This Warranty does not extend to the elimination of externally generated static or noise, to correction of antenna problems, to costs incurred  
for installation, removal or reinstallation of the product, or damage to tapes, compact discs, speakers, accessories, or vehicle electrical  
systems.  
This Warranty does not apply to any product or part thereof which, in the opinion of the Company, has suffered or been damaged through  
alteration, improper installation, mishandling, misuse, neglect, accident, or by removal or defacement of the factory serial number/bar code  
label(s). THE EXTENT OF THE COMPANY'S LIABILITY UNDER THIS WARRANTY IS LIMITED TO THE REPAIR OR REPLACEMENT  
PROVIDED ABOVE AND, IN NO EVENT, SHALL THE COMPANY'S LIABILITY EXCEED THE PURCHASE PRICE PAID BY PURCHASER  
FOR THE PRODUCT.  
This Warranty is in lieu of all other express warranties or liabilities. ANY IMPLIED WARRANTIES, INCLUDING ANY IMPLIED WARRANTY  
OF MERCHANTABILITY, SHALL BE LIMITED TO THE DURATION OF THIS WRITTEN WARRANTY. ANY ACTION FOR BREACH OF ANY  
WARRANTY HEREUNDER INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY MUST BE BROUGHT WITHIN A PERIOD OF  
30 MONTHS FROM DATE OF ORIGINAL PURCHASE. IN NO CASE SHALL THE COMPANY BE LIABLE FOR ANY CONSEQUENTIAL OR  
INCIDENTAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED, WHATSOEVER. No person or  
representative is authorized to assume for the Company any liability other than expressed herein in connection with the sale of this product.  
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damage  
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.  
U.S.A. : AUDIOVOX CORPORATION, 150 MARCUS BLVD., HAUPPAUGE, NEW YORK 11788 l 1-800-645-4994  
CANADA: CALL 1-800-645-4994 FOR LOCATION OF WARRANTY STATION SERVING YOUR AREA  
128-5422A  
-9-  
 
© 2001 Audiovox Electronics Corp., Hauppauge, NY 11788  
Printed in Korea  
128-6017  
 

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