Interfire Audio D3000.1 Car Amplifier User Manual
Contents
1. interfire MONO CHANNEL CLASS D AUTOMOTIVE AMPLIFIER D900 1 D1700 1 D3000 1 d p p INSTRUCTION MANUAL CONGRATULATIONS ON YOUR PURCHASE Your new high fidelity mono block amplifieris designed to deliver maximum enjoyment and one year of trouble free service Please take a few moments to read this manual thoroughly It will explainthe features andoperation of yourunit and helpinsure trouble free installation FEATURES Class D Technology 1 OhmStable SpecAudiophile Grade Components High Efficiency PWM PowerSupply Multi stranded powertoroid Tow toroidal core MOSFET transistors Oversized Capacitor Banks Discrete MountPower and speakerterminals Variable Low Pass Electronic Crossover 50Hz 250Hz Built inpower bridging module Circuit Thermal Overload Protection Remote Level Control IMPORTANT PLEASE READALL INSTRUCTIONS BEFORE INSTALLATION The quality of installation may affect the performance and reliability of your product If you have any doubts or questions regarding installation you may wish to contact your authorized dealer Remember to heed all wire and fuse requirements suggested in this manual Warranty may be voidif proper installationtechnique is notused refer towarranty section in therearof the manual INSTALLATION MOUNTING 1 Afterreading precaution decide where you are going to installthe unit Also see Fig 1 2 Once theloc2. wall Avoid sharp corners or sharp body that may easily cut through the insulation on the wire Avoid runring the power wire over engine components and near heater cores Use an inline fuse to eliminate the risk of a fire caused by a short in you power wire Connect the fuse holder as close to the battey positive as possible For most applications an 80 ampere Mai fuse or comparable ANL wafer fuse can be ued Now connect the wire to the battey but remember to leave the fuse out unti all other wire connections are mode GROUND When grounding your amplifier locate a meta area close to the amplifier that is a good source of ground preferably the floor again investigate the area you wish to use for electrical wires vacuum lines and brake or fuel lines Using either a wire brush or sandpaper eliminate unwanted paint to supply a better contact for your ground Use the same gauge wire for ground as you did for the power Terminate the graind wire using the correct size ring terminal and attach it to the bare metal using a nut and bdt It is important for this connection to be solid To complete the job spead silicon over the screw and bare metal to preventrust and possible water leaks REMOTE TURN ON In between the power and ground is a remote turn on terminal This terminal must be connected to a switched 12volt source Typically remote turn on leads are provided at the sourceunit that willturn on andoff the amplifier in co
3. wiring connections Input Sensitivity not set properly or damaged speaker cones See adjustment procedure and check each step Inspect each speaker for damage and repair or replace suspected component Low turn on voltage Refer to head unit owner s manual Mute circuit on head unit is on Check electrical system for low voltage Check ground connection Speakers wired with wrong polarity causing cancellation of bass frequencies Check polarity of wires from amplifiers to each speaker as defined by the system design Check battery voltage at amplifier during operation Incorrect wiring or short Refer to electrical installation and circuit check each installation step Amplifier is picking up alternator noise Install an in line noise filter on the head unit s power wire Check alternator routing diodes or voltage regulator for proper operation Check all grounds battery voltage and RCA cables Amplifier is picking up radiated spark noise Check RCA audio cable Install an in line noise filter on the head unit s power wire Check spark plug wires 10 SPECIFICATION AMPLIFIER RMS POWER 1 ohm 1 2 ohms 0 05 T H D 4 ohms 0 05 T H D Efficiency Typical 4 ohms MIN RATE 1 ohm Bandwidth 148 Signal ToNoise Ratio A WTD Damping Factor Input Sensitivity Input Impedance Circuit Breaker Dimensions W x H x D mm Crossover Selector Switch Va
4. ED OPTION FOURAMPLIFIER ONESUBWOOFER DUALVOICE COIL CONFIGURATION Master Amplifier O PROTECT e ON PROTECT n PROTECT e ON PROTECT Slave Amplifier POWER SUPPLY CONNECTIONS The Class D amplifier is designed to work within 10 to 16 volts DC Before any wires are connected the vehicle s electrical system should be checked for correct voltage supply with the help of a voltmeter First checkthe voltage at the battery terminals with the ignition in the off position The voltmeter should read no lessthan 12 volts Next check the battery with the engine running between 1500 and 2000 rpm The voltmeter should now read between 13 5 and 14 5 volts If your vehicle s electrical system Is not up tothese specifications we recommend having itchecked byan automotive mechanic before further installation RECOMMENDED POWERWIRE The proper wire size is very imporant for an amplifier of this power level Becase the Class D amplifier is capable of drawing in exces of 90 amperes 4 gauge wie is recommended for lengths up to twenty feet if a longer length is needed larger gauge wire may be necessary POWER Amplifier power wire should be wired directly to the batery using the wire requirements listed above Start at the amplifier and run the power wire through the vehicle to the battery The use of grommets is recommended when passing the power wire through any metal
5. STER SLAVE Slave Amplifier e D GV O 2V 250Hz OdB 12dB a GAIN L P F BASS BOOST LINE INPUT WIRING SUBWOOFERS DUAL AMPS When using dual amplifiers to power one subwoofer the Positive terminal of the Subwoofers voice coil is connected the positive terminal of the MASTER Amplifier and the Negative terminal of the Subwoofers voice coil is connected to Positive terminal on the SLAVE Amplifier This procedure will allow the total power of both amplifiers to be added together and act like a single powerful amplifier Please check that your subwoofer power handling capabilities are not exceeded when hooking two amplifiers toit CAUTION Always check your speaker load with a multi meter before hooking up to the amplifier These digital amplifiers are only 1 ohm stable Any Impedance load smaller than 1 ohm will damage the amplifier Such Damage is not covered under warranty either so pay strict attention to what connections are madeto the amplifier MONO BRIDGED Master Amplifier Using a lead wire of 8 gauge or bigger connect from the master Amp s negative speaker terminal to the slave Amp s negative speaker terminal Slave Amplifier BATTERY VIA FUSE CHASSIS GROUND REMOTE TURN ON OPTION TWO AMPLIFIER ONESUBWOOFER SINGLE VOICE COIL CONFIGURATION Master Amplifier Slave Amplifier Recommend Competition Only MONO BRIDG
6. ation has beendetermined place theamplifier into position Using a felttip pen or pencil mark the fourholes to bedrilled for mounting NEVER use theamplifier as a template for drilling It is very easy to damage the amplifier surface in this manner 3 Remove amplifier Drill four 3 5 m m holes into mounting surface If you wantto mount the amplifier to MDF or wood panel drillfour 3 0m m diameter holes into mounting surface 4 If possible test the system to ensure itis operating correctly before final mounting of the amplifier 5 Mount the amplifierusing the supplied 4 self tapping screws INSTALLATION DIAGRAM SPEAKER WIRING The Class D amplifier is a SINGLE CHANNEL dedicated subwoofer amplifier Unlike other amplifiers the Class D operates as a single channel and cannot be bridged Don t be fooled by the outputs Two outputs are used strictly for convenience and are paralleled internally on the amplifier This mears that if both ouputs are used with one driver each the amplifier sees the same load as if the same drivers are connected to only one outputterminal See diagrambelow P 4OHM 4OHM SUBWOOFER SUBWOOFER 4OHM 4OHM SUBWOOFER SUBWOOFER In both diagrams the amplifiersees a 2 ohm load MONO BRIDGED MASTER SLAVE Master GV 0 2 50Hz 250Hz 088 1248 GAIN L P F BASS REMOCON SLAVE BOOST LINE INPUT MA
7. ected frequency outputfrom OdB to 12dB 5 Remote Control Jack For connecting the remote control module tothe amplifier 6 Master Slave Switch Select the remote level control the on board level control as the master control 7 Slave Input Jack Used to connectto another amplifier when bridging 2 amps together The Slave modebypasses normal input jacks and controls FRONT REAR PANEL MASTER SLAVE 9 9 250 048 1248 GAIN L P F BASS REMOCON SLAVE BOOST SPEAKER 2 t D1700 1 SPEAKER 2 D3000 1 TROUBLE SHOOTING GUIDE This section provides you with acatalog of amplifiersymptoms and theirprobable causes and solutions Before you consult thislisting make surethe vehicle s electricalsystem is working properly by verifying that otherelectrical items e g headlights windows etc Still function correctly SYMPTOM PROBABLE CAUSE SOLUTION No Audio Distorted Audio Audio Level Low Audio Lacks External Fuse Blowing Whining noise on audio with engine running Ticking noise on audio with engine running Low or N C Remote Turn on connections Check remote turn on voltage at amp and head unit Blown Fuse Power wires not connected Replace with new fast blow fuse Check butt splices or solder joints Check ground and battery connections Blown or non speakers Use VOM or DVM to measure speaker connected coil impedance check speaker
8. riable Low Pass Filter X Over Slope Variable Subsonic Filter D900 1 900W x 1 650W x 1 350W x 1 9096 7996 10Hz 250Hz gt 100dB 150 200mV 6V 20K Ohms 75Amp 257 x 56 x 320 Variable 50 250Hz 24dB 20 50Hz 24dB 20 50Hz 24dB D1700 1 1700W x 1 1000W x 1 500W x1 90 79 10Hz 250Hz gt 100dB 150 200mV 6V 20K Ohms 90 Amp 257 x 56 x 350 Variable 50 250Hz 24dB D3000 1 3000W x 1 2000W x 1 1000W x 1 90 79 10Hz 250Hz gt 100dB 200mV 6V 20K Ohms EXTERNAL 257 x 56 x 420 Variable 50 250Hz 24dB 20 50Hz 24dB NOTE Specifications amp design subject to change without notice for improvements 11 interfire Interfire Audio Inc Santa Fe Springs CA 90670 www interfireaudio com Printed in Korea
9. rrespondence with the source If a radio does not have a remote turn on then a powerantenna wire may be used Yet if neither of these leads are available at the source a switched 12 volt supply must be supplied Run aminimum of 18 gauge wire from theamplifier location tothe source ofthe switched 12 voltlead If possible route this wireon the sameside of the vehicle as your power wire Connectthe source remote output wire to the REM terminal on the amplifier using a 3mm screw key Cut the remote wire to length Strip approximately 1 2 inch of insulation from theend of thewire and insertinto the terminal Tighten thescrew securely OPERATION o Q O 6V O 2V 250Hz OdB 12dB GAIN BASS BOOST LPF LINE INPUT 1 RCA Input Jacks 2 Input Level Control 3 Low PassFrequency 4 Bass Boost 5 Remote ControlJack 6 Master Slave Switch 7 Slavelnput Jack Control and Crossover 1 RCA Input Jacks Lowlevel high impedance inputs Usehigh quality RCA cables designed for mobile applications 2 Input Level Control Adjustthe input level forthe marked channels Turn clockwise to increase the level counterclockwiseto decrease Amplifiers will run coolerand produce less system noise atlower level settings 3 Low Pass Frequency Adjustthe crossover frequency by turning clockwise to setto a higher frequency counterclockwiseto set to alower frequency 4 Bass Boost Adjust the sub boost level ofthe sel
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