Scosche HDA8004 audio amplifier
Contents
1. F INPUTS ADJUSTMENTS cont d O PWR PRO HI LEVEL INPUT M AMPLIFIER STATUS INDICATOR POWER Illuminates GREEN when amplifier is on No light indicates no power or insufficient voltage PROTECT Illuminates RED when amp is in Protect Mode and indicates overheating voltage overload or short circuit HIGH LEVEL INPUTS For use with car stereos without low level RCA outputs Low Level inputs are recommended if available see Low Level Inputs below If your car stereo has only High Level Output speaker wires only connect speaker output wires from your car stereo to High Level Inputs as indicated below LEVEL O MIN MAX Q INPUT LOW PASS 100 o 50 Frog FREQ Hz 225 X OVER HP 80Hz FULL LP BASS BOOST 0dB 6dB 12dB HIGH LEVEL INPUT HARNESS White left front positive Gray right front positive White Black left front negative Gray Black right front negative LEVEL The Level Adjust Control matches the output of your car stereo to the inputs on the HD Amplifier 1 Turn stereo on and adjust the volume to about 3 4 of the stereo s maximum volume 2 Carefully turn the Level control by turning it from the MIN position on the HD Amp until the sound is just above your normal listening volume or near distortion when the audio becomes garbl2. Check speakers and speaker lines for shorts Check low level RCA connections Be sure they are con nected at car stereo and amplifier Check all speaker output connections Incorrect speaker impedance overloading amplifier LED may turn RED for this condition Car stereo s balance and fader controls set incorrectly Disconnect speaker from amplifier Verify speaker impedances For Stereo 2 channel mode speakers should be 2 or 4 ohms each For Bridged mode speaker s should be no less than 4 ohms Speaker impedances can be found by checking speaker manufacturer specification or using a digital volt ohm meter For further assistance please call 800 621 3695 x3 Check car stereo s balance and fader control positions verify they are centered Bad connection at amplifier or speaker Check speaker connections at amplifier and speaker Bad input via RCA or high level inputs Car stereo s balance and fader controls set incorrectly Check all input leads at amplifier Be sure RCAs are connected to car stereo and amplifier Check high level inputs for connection to amp verify connections Check car stereo s balance and fader control positions verify they are centered Amplifier s input gain control setting is not correct Low voltage on 12V input or connections at battery Check amplifier s input gain control settings adjust levels if necessary Check 12V connections at the
3. amplify two pairs of speakers in your vehicle SPEAKER L R FRONT FRONT RECOMMENDED X OVER X OVER REAR LP FULL HP 80Hz OR LP FULL HP 80Hz RECOMMENDED X OVER X OVER HP 80Hz FULL LP OR HP 80Hz FULL LP Lim ta FRONT qm m REAR OUTPUT POWER cont d SPEAKER STEREO BRIDGED 3 CHANNEL MODE L R For one pair of full range speakers or components and one woofer subwoofer connect as shown in Figure 2 Set Front amplifier crossover to FULL or HP High pass for the Front channels and LP Low pass for the Rear bridged channel Use this configuration to amplify one pair of speakers or components and one woofer subwoofer NOTE the Bridged speaker must be 4 Ohm FRONT REAR RECOMMENDED X OVER X OVER REAR BRIDGED MODE LP FULL HP 80Hz HP 80Hz FULL LP Lr a FRONT REAR SPEAKER BRIDGED 2 CHANNEL MODE L R For two woofers subwoofers connect as shown in Figure 3 Set both Front and Rear crossovers to LP Low pass Use this configuration to amplify two woofers or sub
4. battery and amplifier inputs Low vehicle battery voltage Verify battery voltage Voltage should be greater than 11 5 volts DC at amplifier with engine off Bad connection on car stereo or amplifier Amplifier s input gain control may be set too high or incorrectly Low vehicle battery voltage Check car stereo and amplifier s ground connections Check amplifier s input gain control settings adjust levels if necessary Verify battery voltage Voltage should be greater than 11 5 volts DC at amplifier with engine off Bad connection on car stereo or amplifier Check car stereo and amplifier s ground connections Incorrect speaker impedances LED may turn RED for this condition Input gain control too high Disconnect speaker from amplifier Verify speaker impedances For Stereo 2 channel mode speakers should be 2 or 4 ohms each For Bridged mode speaker s should be no less than 4 ohms Speaker impedances can be found by checking speaker manufacturer specification or using a digital volt ohm meter For further assistance please call 800 621 3695 x3 Lower gain control Incorrect speaker impedances LED may turn RED for this condition Disconnect speaker from amplifier Verify speaker impedances For Stereo 2 channel mode speakers should be 2 or 4 ohms each For Bridged mode speaker s should be no less than 4 ohms Speaker impedances can be found by checking speaker ma
5. HDA8004 y SCOSCHE 4 CHANNEL AMPLIFIER OWNER INSTALLATION MANUAL HDA8004 FEATURES amp SPECIFICATIONS e 50 watts x 4 channels RMS output power 4 ohm e Bridgeable e 75 watts x 4 channels RMS output power 2 ohm e 80Hz high pass electronic crossover e 150 watts x 2 channel RMS output power e Adjustable low pass electronic crossover bridged 4 ohm 50Hz 250Hz e Total dynamic output power 800 watts e Selectable bass boost e Line level and speaker level inputs e Protection circuit temp output voltage e 2 ohm capable stereo mode only with warning LED 20Hz 20kHz Greater than 85dB CEA 2006 Less than 06 20Hz 20kHz 40hms 12dB Ot 50Hz 250Hz 6dB or 12dB 45Hz Frequency Response Signal to Noise THD Noise Electronic Cross Bass Boost Impedance 2 4 Ohms Bridged mode 4 Ohm ONLY Operating Voltage 14 4VDC 10 16VDC allowable Dimensions 2 4 H x 9 5 W x 11 5 L Features and specifications are subject to change without notice IMPORTANT PRELIMINARY BEFORE YOU BEGIN e Read all instructions and cautions e Disconnect negative terminal of vehicle battery INSTALLATION PROCEDURES Plan your installation completely before beginning Be sure you have all materials needed to complete your installation Please call us with any questions before you start at 1 800 621 3695 Ext 3 RECOMMENDED TOOLS amp SUPPLIES not included e Wire Strippers and Cutters e Dig
6. ed breaks up or becomes unclear 3 If there is excessive HUM or HISS between songs the levels are set TOO HIGH and should be turned down back toward MIN LOW LEVEL INPUTS Using Low Level RCA Inputs with the low level outputs from your car stereo is recommended if available If no low level outputs are available from you car stereo see High Level Inputs above LOW PASS Use the Low Pass frequency adjustment when the X Over setting is set to the LP position for woofers and subwoofers All frequencies below the user setting 50Hz 250Hz will be passed through to the speakers X OVER LP low pass Used to filter out all high frequencies and only use low frequencies This setting may be used when the amp is used to drive subwoofers FULL full range Used when NO filtering is wanted Amplifier will send a full range of frequencies to your speakers Used when driving a set of full range speakers HP 80Hz high pass Used to filter out all low frequencies and only use high frequencies This setting may be used when the amp is used to drive a set of seperate tweeters and midrange speakers or full range speakers This setting is recommended when you have a dedicated amplifier and subwoofer for low fequencies BASS BOOST Use the Bass Boost setting to boost low frequency sounds at 45Hz either by 6dB or 12dB The OdB setting is off or no low bass boost Use caution when setting this adjustment as this ca
7. ital multi meter e Drill and drill bits e Electrical tape e An amplifier wiring kit with a fuse rating of at least 20 amps LOCATION MOUNTING AMPLIFIER Select a safe dry location to mount your amplifier Double check location and placement of amplifier before making any connections or drilling holes Amplifier will generate heat Be sure area is well ventilated Never mount your amplifier in the engine compartment or cover it with carpet or any other fabric materials that will cause the amplifier not to get the proper ventilation Before securing amplifier be sure mounting area is clear of electrical wiring fuel lines or any other obstructions Be sure not to drill through electrical wires fuel lines or other obstructions that may be around your mounting area If you have any questions or concerns please contact our tech support team at 1 800 621 3695 Ext 3 IMPORTANT DO NOT RETURN PRODUCT TO THE RETAILER IF YOU NEED ASSISTANCE OR REPLACEMENT PARTS CALL US TOLL FREE 1 800 621 3695 X3 HOURS MON FRI 8AM 5 30PM PST SATURDAY 8AM 2PM PST 2012 SCOSCHE INDUSTRIES INC SI 300HDA8004 3 12 IMPORTAN RELIMINARY WARNING BE SURE TO DOUBLE CHECK ALL ROUTING LOCATIONS DRILLING THROUGH ANY ELECTRICAL WIRES FUEL LINES OR ANY OTHER VEHICLE SYSTEMS MAY CAUSE INJURY OR DEATH ROUTING CABLES AND WIRES Determine the safest place to run wires through firewall If it is necessary to drill holes be sure area is free of any obstructions o
8. lity Scosche at our option will repair or replace the product free of charge and will return the product to you postage paid In no event shall Scosche be responsible for claims beyond the replacement value of the defective product or in any way be held liable or responsible for consequential or incidental damages No expressed warranties and no implied warranties whether for fitness or any particular use or otherwise except as set forth above which is made expressly in lieu of all other warranties shall apply to products sold by Scosche No waiver alteration addition or modification of the foregoing conditions shall be valid unless made in writing and signed by an executive officer of Scosche Industries Inc No salesperson representative or agent of Scosche is authorized to give any guarantee warranty or make any representation contrary to the above
9. n cause distortion or damage to speakers 3 OUTPUT POWER POWER SPEAKER GND REM 3 FUSE L R fa Sa 1 FRO ed ar re aeS RERE 5 1 ho 20A 20A __ BRIDGE FUSE FUSES O Use only specified fuses two 20 amp fuses CAUTION Use of other than specific fuses may damage system or vehicle Use of unspecified fuse will void warranty 20A 20A Ea POWER N 12 VOLTS 2 The high current lead for the amplifier must run directly to the positive battery E L terminal via a dedicated fuse block Fuse should be mounted as close to a 21 positive battery terminal as possible DO NOT connect to car s fuse block or f wires from car s stereo 8 gauge wire is recommended POWER WIRE FORATTERY gt TERMINAL REMOTE TURN ON CONNECTION REM POWER Remote Amp Turn on Connect to car stereo s remote amplifier turn on lead If car stereo does not have a remote amplifier turn on Connect to the car stereo s accessory wire The GND REM 12V accessory wire will have 12 volts while the ignition is in the ON Run or ACC position and no voltage while Ignition is off CAUTION Connection to a 12 constant source could cause Cars batte
10. n either side Always use a grommet to protect wire Be sure to route all wires and cables away from parts that may move or become hot Excessive heat will damage the amplifier and wiring Route power wires away from signal RCA cables If power wires and signal cables need to intersect cross at a 90 angle Route RCA cables away from wires that may carry high current GROMMET To prevent damage BATTERY ii POWER WIRE CONNECTOR n firewall 8 Gauge wire or larger REMOTE GROUND SCREW TURN ON Drill 1 8 hole in WIRE chassis sheet metal 18 Gauge wire use the same ground if using multiple amplifiers WIRES AUDIO CABLES amp FUSES Receiver NOT INCLUDED WITH AMP RCA CABLES INPUTS ADJUSTMEN AMP TERMINAL COVER PLATES Before making connections remove the the protective amp terminal covers as shown in the illustration at right 1 Extract 2 Phillips screws 2 Pull outward to unsnap and remove cover 3 Replace covers after installation final adjustments and testing FRONT BASS BOOST BASS BOOST OVER HP sohz FuLLLp LOW PASS LEVEL oo m5 Nl N m ron X OVER LOWPASS Lp FULL HP eoHe w ms ee Com eee Deas H 7 Pwr PeO 9 O 0g HI LEVEL INPUT FREQ MIN MAX MIN MAX Fao HLLEVEL INPUT He z oann R
11. nufacturer specification or using a digital volt ohm meter For further assistance please call 800 621 3695 x3 Not enough air circulation around amplifier Amplifier is covered by carpet or other material Verify mounting location allows free air circulation around amplifier LIMITED WARRANTY Scosche Industries Inc warrants this product to be free from defects in material and workmanship for a period of 1 year from date of purchase DOA units can be returned to the selling retailer for exchange Units that have been installed for more then 30 days must be sent back to Scosche for repair Consumers must call the Scosche 800 number for an RA number and pay to ship the unit back to Scosche Scosche will then repair or replace the unit at our discretion and pay shipping cost to return unit back to customer This warranty does not cover any expenses incurred in removal and reinstallation of the product in the vehicle This warranty is offered to the original purchaser of the product only This warranty does not apply to product which has been water or physi cally damaged damaged by accident or which has been misused disassembled or altered or installed improperly If the product should prove defective within the warranty period return the product with a copy of the sales slip postage prepaid to Scosche Industries Inc 1550 Pacific Ave Oxnard CA 93033 Attn Service Dept Your dated sales slip will establish your warranty eligibi
12. ry to drain TO CAR STEREO GROUND GND The ground wire is a high current connection This needs to be attached to a clean metal point of the vehicle It should be attached with a star washer to a clean connection in the vehicle capable of handling high current loads Ground should be as close to amplifier as possible no more than 3 feet from amplifier GND Attach to a clean metal chassis POWER point in vehicle Be sure area is REM 12V free of paint rust or grease SELF TAPPING STAR WASHER WIRE 8 GAUGE WIRE IS RECOMMENDED eS 7 SCREW USE PROPER O OUTPUT POWER cont d SPEAKER CONNECTIONS Speaker connections are used to connect the speakers to the amplifier Be sure speakers with the appropriate impedances are used It is extremely important that the speaker wires are NOT connected to or touching the chassis Ground of the vehicle in any way The and leads are not inner connected so the left channel and the right channel must remain independent In addition the leads for the speakers CANNOT touch or be wired to the ground lead of the amplifier this is NOT a common ground amplifier STEREO 4 CHANNEL MODE For two pairs of full range speakers or components connect as shown in Figure 1 Set Front Rear amplifier crossovers to FULL or HP High pass Use this configuration to
13. woofers NOTE the Bridged speakers must be 4 Ohm FRONT REAR BRIDGED MODE RECOMMENDED BRIDGED MODE X OVER X OVER LP FULL HP 80Hz HP 80Hz FULL LP LJ aon ee FRONT REAR PROBLEM Amplifier will not turn on or no power power LED not on Power but no sound power LED is on No sound from one channel or entire side Very low sound level Power amplifier turns on and off repeatedly Amplifier turns off during loud or distorted passages or Protection LED comes On Amplifier operates but gets very hot TROUBLESHOOTING CAUSE No voltage on 12V input CORRECTION Use voltmeter to verify voltages at terminals of amplifiers 12V Input should have a minimum of 11 5 volts while ignition of vehicle is ON or OFF No turn On from car stereo Use voltmeter to verify voltage at terminal of amplifiers REM input REM input should have 12 volts while car stereo is ON and 0 volts while OFF Bad connection at battery or Fuse at battery Check main power connection and fuse at battery Shorted speaker line or connections Bad connection on RCA input or speakers not connected correctly Disconnect all speakers but not 12V GND or REM lines if unit then turns on a speaker or speaker line may be touching vehicle chassis
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