Interfire Audio G2-1200 Car Amplifier User Manual
Contents
1. 12V REM GND j 2 2 Ss LU 2 CAR STEREO HEAD UNIT lt Gp FIG 2 4CHANNEL SYSTEM WIRING DIAGRAM D interfire 4 LINE INPUT GAIN BASS FREQUENCY FREQUENCY BASS GAIN LINE INPUT gt o 6V 0 2 OdB 1248 FLAT 50Hz 500Hz50Hz500Hz OdB 1248 6V 0 2 1 2 3 4 9 CH4 0000 000000 12V REM GND ECN E 2 lt LL lt 2 2 2 lt E A O lt FIG 2 SYSTEM WIRING DIAGRAM _ interfire e 1 2 CROSSOVER CROSSOVER CROSSOVER LINE INPUT 55 TEL mame 000000 000000 65 0000 12V REM GND 2 lt LU lt 2 Z 2 lt lt FIG 2 SPEAKER CONNECTIONS This amplifier can operate in one two or three channel mode The minimum impedance for single channel bridged mono operation is 4 or 8 ohms Tri channel power is referred to stereo and mono at the same time Minimum impedance remains the same for three channel front subwoofer systems as long proper2. 7 interfire 2 CHANNEL 4 CHANNEL 5 CHANNEL AUTOMOTIVE AMPLIFIER G2 600 62 800 62 1200 G4 600 64 800 054 1000 65 900 INSTRUCTION MANUAL Congratulations on your Purchase Your new high fidelity bridgeable stereo amplifier is designed to deliver maximum enjoy ment oneyear of troublefree service Pleasetake few moments to read this manual thoroughly It will explain the features and operation of your unit and help insure trouble free installation Features Four Class AB High Current Dual Discrete Drive Stages Class AB Technology MOSFET PWM Power Supply e Bridgeable amp TRI Mode Operation Continuously Variable 12dB Octave HighPass 4 12dB Octave Low Pass Crossover Subwoofer Variable Crossover for Deep Bass Control e Enhanced Bass Boost 12dB 50Hz Enhanced Treble Boost 12dB 0 10 2 e Nickel Plated RCA Power 4 Speaker Terminal e Soft Start Muting e Overload Thermal and Short Circuit Protection Power amp Protection indicator Bass LevelRemote Control 16 4Fit G2 600 800 1200 Precautions Read First e If afterreading the directions you feel uncomfortable about installing the amplifier in your car ornot equipped orcompetent to doso you shouldhave the amplifierinstalled by an authorized installer It s your car e Negative battery terminal must be disconnected before electrical connections are made e su
3. BRIDGED FIG 3 5 5 5 CH SPEAKER WIRING DIAGRAM 3 SPEAKER BRIDGED SCHANNELAMPLIFIER 65 900 speaker BRIDGED FUSE CH1 CH2 5 J Q Q CH 5 3 CHAR 2 4 Ohms GTN 4 CH gt 7 D 4 8 Ohms YY 1 4 8 Ohms We CH 22 FUSE CH CH 5 40 40A m SUBWOOFER 1 cH 2 4 Ohms 22 5 7 7 2 8 Ohms 7 CH SUBWOOFER FIG 3 ADJUSTMENTS 1 Set to the position when the amplifier is used to drive tweeter midrange system The frequencies below the crossover point will be attenuated at 12dB octave Permits adjustment of the crossover frequency by rotating the knob to select any frequency between 80Hz to 1 2 2 amp 50Hz to 500Hzas the crossover point 2 Set to the L P F position when the amplifieris used to drive a subwoofer The frequencies above the crossover point will be attenuated at 12dB octave Permits adjustment of the crossover frequency by rotating the knob to select any frequency between 50Hz to 250Hz amp 50HZ to 500Hz as the crossover point 3 Set to the OFF position when the amplifier will be used for driving full range speakers The full frequency band width 20
4. IF YOU NEED SERVICE ON YOUR INTERFIRE AUDIO PRODUCT Please call Interfire Customer Service at 1 877 90 AUDIO to obtain an RA Return Authorization number All warranty returns should be sent to INTERFIRE AUDIO freight prepaid through an authorized INTERFIRE AUDIO dealer and must be accompanied by proof of purchase a copy of the original sales receipt Direct returns from consumers or non authorized dealerswill be refused unless specifically authorized by INTERFIRE AUDIO with avalid return authorization number Warranty expiration on products returned without proof of purchase will be determined from the manufacturing date code Coverage may be invalidated as this date is previous topurchase date Return only defective components Non defective items received will be returned freight collect Customer is responsible for shipping charges and insurance insending the productto INTERFIRE AUDIO Freight damage on returns is notcovered under warranty Always include proofof purchase sales receipt NOTICE Products shipped withouta valid RA will berefused and shippedback Interfire Audio Inc Santa Fe Springs CA 90670 www interfireaudio com Printed in PRC
5. ire 1 2 LINE INPUT ete CROSSOVER cROSSOVER SOVER INPUT 000 66 6 2580 0 2V 50Hz 80Hz 1 2kHz 5 0000 000000 65 900 FRONT 5 CHANNEL AMPLIFIER 05 000 BRIDGED REM B FUSE CH1 1 CH2 CH2 5 40 40A 0000 000000 65 900 REAR 13 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 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 PROBABLE CAUSE SOLUTION Low or N C Remote Check remote turn on voltage at Turn on connections 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 wiring connections Input Sensitivity not set properly or damaged speaker cones See adjustment procedure and check each s
6. 2 20 2 willbe output to the speakers without high or low frequency attenuation 4 Level adjustment The sensitivity adjustment is to allow the amplifier to work with many different brands of head units It allows input signal to vary between 200 millivolts to 6 volt from the head unitor other signal processor Start by setting the sensitivity adjustment to the MIN 6 volts Using a cassette or compact disc that you are familiar with turn on head unit to the 3 4 volume setting Slowly turn up sensitivity adjustment towards the MAX 200 millivolts using aflat head screw driver Stop turning on the onset of distortion and turn back just a slight The 3 4 volume setting is now the maximum volume for the head unit The goal 1 to keep the level control to the lowest setting yet still have enough signal to drive the amplifier This is done to prevent over driving the amplifier and to keep system noise to a minimum It is important not over drive speakers at point of distortion this will cause permanent damage to the speakers Also if the amplifier itself is over driven it could be damaged 5 The BASS function can be selected to increase low frequency response output or decrease frequency response output The BASS function will be working at only OFF L P F position e The BASS is adjustable from 0 12dB boost at 50 2 11 FRONT REAR PANEL 2CHANNEL 4CHANNEL LINE INPUT
7. INPUT CONNECTIONS This amplifier will accept low level inputs only Low level is the same as line level The low level signal is carried through RCA cables Itis preferred to use lowlevel inputs to the amplifier if the head unit is equipped with the low level outputs If not you can use a high to low converter available throughyour local caraudio shop Connect the low level line level RCA cables from the head unit or signal processor to the line level the amplifier See Fig 2 system wiring diagrams POWER CONNECTIONS It is importantto have good quality power and ground connections Remember to complete an electrical circuit the ground connection is just as important as the positive power connection Before any power connections are made disconnect the ground cable atthe battery When the power supply lead memory backup lead or ground lead are extended use AWG5 or larger automotive grade cable which will withstand friction and heat to safe grade against fires occurring as aresult of short circuiting GND Connect proper gauge ground wire tothe amplifier GND terminal Locate the position on the chassis of the car to whichthe amplifier isto be grounded The surface must be free from any paint or dirt This can be accomplished with a small grinding bit sand paper or wire wheel NOTE Donot ground the amplifier to the frame of the car The frame on most cars and trucks is not grounded to the chassis body
8. LOW PASS FILT Yg VARIABLE VARIABLE VARIABLE VARIABLE 50Hz 500Hz 50Hz 500Hz 50Hz 500Hz 80Hz 1 2kHz HIGH PASS FILTER VARIABLE VARIABLE VARIABLE VARIABLE cam A P PONSE 10Hz 40kHz 10Hz 40kHz 10Hz 40kHz 10Hz 40kHz SIGNAL TO NOISE RATIO WTD gt 100dB gt 100dB gt 100dB gt 100dB INPUT SENSITIVITY 200mV 6V 200 6V 200mV 6V 200 6V INPUT IMPEDANCE 22k Ohms 22k Ohms 22k Ohms 22k Ohms OPERATION VOLTAGE NEGATIVE GROUND DC 12V DC 12V DC 12V DC 12V SPEAKER IMPEDANCE FUSE RATING 30 Ax 2 40 Ax 2 40 Ax 2 DIMENSIONS 245 55 280 245 x 55 320 245 55 400 245x 55 400 NOTE Specifications amp design subject to change without notice for improvements 16 WARRANTY ils WARRANTY LIMITATIONS The following is NOT covered under Interfire Audio s warranty program Product owned by anyone other than the Original purchaser froman authorized Interfire Audio dealer The warranty is NOT transferable and willnot apply to products purchased from unauthorized dealers Speaker products thathave been over powered causing thermal burnt voice coil and or mechanical failure ripped surrounds or spiders Product that has NOT been installed according to the instructions in the owner s manual Product in which repair and or modification has been attempted by unauthorized parties Product damaged in an accident due to criminal activity attempted theft gunshot
9. Use Solder or aclamp ring to connect the ground wire Pre drill the prepped chassis to bolt the ground ring terminal with nut bolt and lock washers Insulate metal and connector with paint or silicon to prevent rust and oxidation Silicon also works great to preventnuts and bolts from working loose in a harsh environment of an automobile Upon completion of the ground connection grab wire or connector and confirm that it is a solid connection To prevent engine noise it is recommended to ground the head unit and other audio electronics in the same location REM Connect remote wire power antenna output from the head unit to the remote turn on wire of the amplifier If the head unit is not equipped with aremote antenna output locate a wire that is controlled by the accessory position of the key Itis important to have the amplifier turn off with the radio or key If the amplifier remains on the result will most likely be adead battery 12V Connect the proper gauge power wire to the amplifier B terminal Run wire to wards the fuse holder that is greater then 0 5 meters from the battery Remember the fuse is to protect the safety of the carin the case of a short Connect fuse holder to battery but do notinstall fuse atthis time 2CHANNEL SYSTEM WIRING DIAGRAM D interfire LINE INPUT GAIN BASS L P F H P F 0 2 1298 50Hz 250Hz yaaa 1 2KHz 1 CROSSOVER
10. d your warranty Do not run wiring underneath outside the car since exposure to the elements may cause the insulation to deteriorate rapidly resulting in short circuits and or intermittent operation all cables should be runbeneath carpets and inside trim pieces To help minimize interference 15 best to run the power cables along the opposite side from the audio cables Whenever wires pass through metal rubber or plastic grommets must be used to prevent the metal from wearing through the installation and causing ashort Whenever possible use cable ties mounting clamps and similar wiring aids available from an electrical supply or auto parts store Adding stress relief loops to wiring is also advisable to prevent straining or breakage e It is best totest the system before the amplifier is mounted and interior of car is reassembled If the temperature inside your car reaches extreme levels such as sitting locked up for several hours in the hot sun or exposed to avery cold winter s day the amplifier may go into protection mode and shut off Leave the unit off until the ambient temperature returns to normal amplifier operates with any vehicle using 12 volt negative ground system If you are not sure of the type of electrical system in your vehicle consult your authorized dealer or qualified mechanic NEVER ground the speaker leads and NEVER allow the speaker leads to come in contact with eac
11. damage etc or by acts of God flooding lightning etc Product that has been physically damaged abused and or altered Including bent frames or missing magnets Custom finishes or other cosmetic treatments applied to products Interfire Audio will not be responsible for restoring or maintaining any Custom finishes Product with defaced altered or removed serial numbers no valid legible serial No no warranty Product damaged cosmetically due to improper handling ornormal wear and tear Including Freight damage Besure to package all returns in its packing material and box Installation and shipping costs associated with removing re installing or shipping the product to Interfire Audio for warranty service WARRANTY TERMS Effective January 01 2010 These terms supersede all prior published warranty terms Interfire Audio products are warrantied against defects in materials and workmanship for a period of One 1 Year from the original date of purchase Products found to be defective during the warranty period will be repaired or replaced with a product deemed to be equivalent at Interfire s discretion Note Products purchased from unauthorized dealers are not covered under warranty Ask your dealer for details on warranty limitations INTERNATIONAL WARRANTIES Products purchased outside the United States of America are covered only by that country s distributor and not by Interfire Audio Inc
12. h other Speaker wire should be 18 gauge or larger Remote turn on wire must be switched by the radio does not a remote turn on or antenna output connect to wire that has a positive 12 volts when the key is turned to the accessory Ifthe amplifier does not turnoff the battery willdie Do not listen to high volumes for extended periods of time or hearing damage may occur CONTINOUS EXPOSURE TO SOUNDPRESSURE LEVELS OVER 100dBMAY CAUSE PERMANENT HEARINGLOSS HIGH POWEREDAUTOSOUND SYSTEM MAY PRODUCE SOUND PRESSURE LEVELS WELL OVER 130dB USE COMMON SENSE ANDPRACTICE SAFE SOUND INSTALLATION MOUNTING 1 Afterreading precaution decide where are going to installthe unit Also see Fig 1 2 Once thelocation has beendetermined place the amplifier into position Using felttip pen or pencil mark the fourholes be drilled for mounting NEVER use the amplifier as a template for drilling It is very easy to damage the amplifier surface in this manner 3 Remove amplifier Drill four3 5 m m holes into mounting surface 1 you mount the amplifier to MDF or wood panel drillfour 3 0m m diameter holes into mounting surface 4 1 possible test the system to ensure itis operating correctly before final mounting of the amplifier 5 Mount the amplifierusing the supplied4 self tapping screws INSTALLATION DIAGRAM Self Tapping Screws FIG 1 CONNECTIONS
13. m OdB 1 50Hz 250Hz L P ii 80Hz Sm 1 0000 000000 62 600 800 1200 FRONT 2 CHANNEL AMPLIFIER G2 600 POWER SPEAKER BRIDGED GND FUSE 0 CH2 000000 0000 G2 600 REAR 2 CHANNEL AMPLIFIER G2 800 SPEAKER BRIDGED 0000 000000 000000 0000 62 800 REAR 2 CHANNEL AMPLIFIER 22 1200 SPEAKER _ Sone ARDOR Aone 0000 000000 000000 6 0000 62 1200 REAR T INPUT GAIN GAIN LINE INPUT 6V 500Hz 50Hz ous 6V 5 gt 1 2 9 3 4 64 600 800 1000 FRONT 12 FRONT REAR PANEL 4CHANNEL 4 CHANNEL AMPLIFIER G4 600 SPEAKER 69 o B8 FUSE CH1 7 CAR 26866 CH3 4 0000 000000 64 600 REAR 4 CHANNEL AMPLIFIER 04 800 SPEAKER BRIDGED FUSE 1 CH3 4 0000 000000 64 800 REAR 4 CHANNEL AMPLIFIER G4 1000 SPEAKER BRIDGED CH1 CHIH P CH2 CH2 000000 0000 64 1000 REAR 5CHANNEL
14. passive crossovers are used Connect right and left speaker wire to corresponding speaker output terminals of the amplifier Be sure to have the positive wire from the speaker connected to the positive speaker terminal of the amplifier and the negative wire from the speaker must connect with the negative speaker terminal of the amplifier Reversing any of these connections will result in the speaker cones moving out of phase which causes bass cancellation See Fig 3 Speaker Output Connections 2 CH SPEAKER WIRING DIAGRAM 1 SPEAKER BRIDGED 2CHANNELAMPLIFIER 22 1200 6 SPEAKER FUSE en ey one mir H 2 SPEAKER BRIDGED 1 4 8 Ohm WOOFER 2CH 1CH FIG 3 aaa SPEAKER CONNECTIONS 4 SPEAKER WIRING DIAGRAM 2 SPEAKER BRIDGED CHANNEL AMPLIFIER 04 1000 enen B BRIDGED FUSE CH1 CH1 CH2 cone a al 0000 000000 000000 0000 G4 1000 a BRIDGED FUSE 4 CHANNEL AMP OWER 0000 000000 000000 0000 G CH3 2 4 3 CH 2 4 ms ms JAN 20H _ a SUB WOOFER 4 SPEAKER STEREO 64 1000 0000 000000
15. rechoose a location that provides substantial ventilation for the amplifier The most preferred locations would in yourcar s trunk underthe front seats or on the back wall of a truck location chosen should provide at least 2 of clearance above the amplifierfor adequate ventilation e ifthe amplifieris tobe mounted vertically be sure thatit isin a place where adequate air will flow along the length ofits heatsink fins for cooling e NEVER mount theamplifier upside down this willcause theheat torise backinto the amplifier causing thermalshutdown or possible permanent damage e NEVER mount theamplifier locationthat is subject todirect sunlightor exposedto moisture e sureto mount the amplifier to astrong solid surface which will notgive way underthe stress of asudden stop oraccident Make sure thatthe mounting screws willnot penetrate the gas tank brake and fuellines wiring or othercritical parts of your car wheninstalled NEVER operate the amplifierwithout the power ground wire 10 gauge minimum NEVER operate the amplifier without fusing Fuse holder must be located with 0 5 meters from the battery This fuse is to protect the car notthe electronics In case ofa short the fuse will blow instead of the wire burning up Using other than the recommended fuse ratings at the battery and at the amplifier may cause damage to the amplifier and will voi
16. tep 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 14 NOTE Specifications amp design subject to change without notice for improvements 15 005 THD GOW 4 005 THD 60W x 4 90W x 4 110Wx 4 41172 120W x 2 4 OHMS Bridged 0 5 THD 105W x 2 175W x 2 225W 2 OUTPUT POWER 600 Watts 800 Watts 1000 Watts 900 Watts BASS LEVEL REMOTE 50Hz 500Hz 50Hz 500Hz 50Hz 500Hz 50Hz 250Hz
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