MB QUART FX1.1000 User's Manual
Contents
1. s 2 L m MONO E Ie OR SUB BASS E a SPEAKER yoo z 3 E TO BATTERY 42v SUR VIAFUSE amp 48 GTT REMOTE TURN ON 81 QIH CHASSIS GROUND FX4 50 FX4 70 FX4 100 Ch384 OUTPUT X OVER LOW PASS BASS EQ HIGH PASS LEVEL om IU oy 4 Channel Amplifiers e Mh amp 99 INPUT MODE X OVER HIGH PASS LEVEL c P m O ee rower e e e e L 200 7 4CH 2CH DUPE34 HP FULL 12kHz i x Ch182 ha FEATURES 2 Sets of RCA inputs POWER LED Indicates the powered up and turned on condition LEVEL Variable sensitivity from 0 2V to 6V PROTECTION LED Indicates a high voltage low voltage short circuit BASS EQ Adjustable 45Hz bass boost from 0dB to 9dB hard clip over heating or DC fault condition X OVER Selects internal crossover functions MODE CH indicates one set of RCA s are being used This will also pass signal to channels 3 4 through 1 2 inputs FULL Bypasses all crossovers for full frequency operation ACH indicates connecting 2 sets of RCA s to 1 2 and LP Selects the builtin LOW PASS filter variable from 30Hz to 150Hz 3 4 inputs HP Selects the built in HIGH PASS filter variable from 10Hz to 1 2kHz LINE OUTPUT Full range RCA pass through 4 Channel Full Range Stereo Interconnect cable checklist Control checklist Connect the four inputs of the amplifier to a Radio CD with quality RCA cables Refer to th2. FORMULA Installation Manual Congratulations By purchasing an amplifier from MB Quart you have decided on a product of the highest technical quality MB Quart wishes you great enjoyment with your amplifier Should you have any questions about this system or other MB Quart products please email us at info maxxsonics com System Design The success of any car stereo system relies on several factors such as the system design execution of the installation and system setup Please remember that any system is only as good as its weakest link Please remember that higher power systems are not necessarily useful purely for high sound pressure levels but also to establish a headroom capability to reproduce musical peaks cleanly without distortion MBQUARTE MBQUARIE German Engineering MAXXSONICS USA INC 1290 Ensell Road Lake Zurich Illinois 60047 USA E Mail info maxxsonics com POWERED BY _ Website www mbquart com Reeve TOS Lower power amplifiers will clip earlier than their more powerful cousins and cause loudspeaker failure when overdriven due to the harmonics generated by a clipped signal thus overheating voice coils Amplifiers should be mounted with the fins running horizontally for best convection cooling to minimize overheating Purchase the best quality RCA cables you can afford for reliability and less engine noise interference in the audio system Itis highly recommended that the amplifier be mounted to a
3. NOT covered This warranty is limited to defective parts and specifically excludes any incidental damages connected therewith This warranty is not construed as an insurance policy Warranty on installation labor removal re installation and freight charges are not the responsibility of Maxxsonics USA Inc Warranty Garantie Garantie Garantia Garanzia Cpok TapanTun FOR EXTENDED WARRANTY INFORMATION PLEASE VISIT WWW MAXXWARRANTY COM MBQUARIE INSTALLATION INSTRUCTIONS German Engineering General Instructions General Run the wiring so that RCA cables are at least 18 away from power and speaker cables Keep RCA cables away from electrical devices in the vehicle that can cause electrical noise such as electric fuel pumps emission control modules and other on board electronic modules Power and ground connections S ee table below Use a Sufficient gauge power cable and ground cable using the chart below as reference to what size wire you require Formula series amplifiers require at least 4 gauge power wire In a multi amplifier system add the total value of the manufacture recommended fusing to get your total system amperage Some applications may require multiple runs of power wire to meet the system requirements In multi amplifier systems itis advisable to mount a large enough fuse right at the battery and run one or multiple 12 volt power cables to a fused distribution block near the amplifiers It is then a simple ma
4. Noise Rati r Circuit Configuration Crossover For Channels 1 amp 2 Variable Low Pass Variable High Pass Subsonic Crossover Switch Crossover For Channels 3 amp 4 Variable Low Pass Variable High Pass Crossover Switch Bass Boost at 45Hz Bass EQ CONNECTOR TYPE Unbalanced Input RCA Speaker Terminals Power Ground Remote Control Module HEAT SINK DIMENSIONS LENGTH X WIDTH X HEIGHT INCHES Note Features subject to change with out notice 10Hz 45KHz 0 2V 6 0V 30Hz 150Hz 10Hz 12KHz LP HP FULL cB 9dB 1x20 Amps TMP X849 x 24T LP HP FULL XB 948 30Hz 150Hz 10Hz 1 2KHz LP HP FULL dB 90B Full Range 1197 x949 x 2 47 10Hz 45KHz 0 2V 6 0V QdB 90B 30Hz 150Hz 10Hz 12KHz LP IHP FULL QdB 9B Full Range 2x20 Amps 1216 x949 x21T 1591 x945 xX 2 47 10 79 x949 x 2 17 40Hz 300Hz 2x25 Amps 1394x945 x27 1949x849 x21 MAXXSONICS OEM Integration Accessories MX 1 Premium High To Low Level Converter MX 3 Bass Controller Bass Remote 4M b ha NON xf toe SUBWOOFER BOOST FREQUENCY INPUT LEVEL MXR 3 m GREEN PRE cLIP LAM LE enm VOLUME RED HARD CLIP BANDWIDTH SUBSONIC I parametric BASS Ead r SUBWOOFER FILTER OUTPUT AAdBIOCT 24 dBIOCT LEVEL 3 F3 3 EJ Ea j M X 1 CLIPPING CONTROL i le ele
5. amplifiers will shutdown when the heatsink temperature reaches 80 degrees centigrade and turn back on once the unithas cooled down below that point Causes of overheating 1 Inadequate cooling relocate or remountto provide better natural airflow over the fins 2 Driving high power levels into low impedances back off on the volume control and or make sure you are not loading the amplifier with less than the recommended loudspeaker impedance Low output power 1 Check thatlevel controls have been setup properly 2 Make sure that the battery voltage as measured atthe amplifier s 12 voltand ground terminals is 11 volts or more 3 Checkall 12 voltand ground connections Fuses blowing 1 The use of loudspeaker impedances below the recommended minimums will draw more current check 2 Ashortonthe main 12 voltcable from the battery to the vehicle chassis will cause the main fuse to blow System does notturn on 1 Checkall fuses 2 Checkall connections 3 Measure the 12 volt and remote turn on voltages at the amplifier terminals If these are non existent or low take voltage measurements at fuse holders distribution blocks the head unit s 12 voltand remote leads to localize the problem Noise problems System noise can be divided into two categories hiss and electrical interference Hiss or white noise 1 High levels of white noise usually occurs when amplifier level controls are turned up too high readjust according
6. board of MDF or other solid structure using the 4 mounting screws provided Avoid mounting the amplifier to metal as this can introduce noise and other unwanted issues When mounting the amplifier ensure that it is mounted HORIZONTALLY as shown in the diagram above for optimal heat dissipation Mounting amplifiers to speaker enclosures is not recommended as this can cause damage to the amplifier components When choosing a location for mounting the amplifier ensure that you check for clearance from wires gas tank electrical devices and brake lines etc FX2 60 FX4 50 FX4 70 FX4 100 FXL400 FX1600 FX11000 Index WARRANTY 1 INSTALLATION INSTRUCTIONS General Instructions Settings for Best Performance TROUBLE SHOOTING FX2 60 2 Channel Amplifiers FX4 50 FX4 70 FX4 100 4 Channel Amplifiers FX1 400 FX1 600 A B Class Mono Amplifiers FX1 1000 D Class Mono Amplifier TECHNICAL DATA 8 Oo P amp P cC N Check out our videos of new products events and technical tutorials at www youtube com maxxsonicsusainc WARRANTY As the manufacturer of MB QUART car audio products Maxxsonics USA Inc warrants to the original consumer purchaser the amplifier to be free from defects in material and workmanship for one 1 year from the date of purchase This product meets the current EU minimum warranty requirements if purchased in countries of the EU To ensure your warranty policy keep your original receipt provin
7. is a fixed bass boost at 45Hz that is variable from 0 9dB This feature provides impact to your bass but if not adjusted correctly it can be over used and cause damage to your speakers and amplifiers It is best to slowly turn this setting clockwise until the desired punch is felt It is not recommended to exceed the 12 o clock position unless listening at a low volume or a low recording quality as this can result in high distortion and possibly clipping Low Pass The Low Pass control acts as a ceiling and doesn t allow frequencies to the right of the desired setting to be reproduced Turning the potentiometer all the way to the right is a great starting point EXAMPLE If you adjust the Low Pass to 120Hz the amplifier will not play frequencies above 120Hz but will play frequencies from 120Hz to the chosen Hi Pass or Subsonic frequency When in Hi Pass operation this setting is bypassed Level Control Setup Ensure that the Level is turned completely to the left prior to turning the system on Next you should insert a CD or cassette that you are familiar with to use as a reference and turn the head unit volume control to about 80 of its full setting The system sound level will of course be very low and the following procedures will help you to match the amplifier input sensitivities properly to the head unit output signal level Itis important to match the amplifier LEVEL input sensitivity to the Radio CD output sensitivity This can be located
8. to the procedures in section Setting up systems after installation for best performance 2 Another major problem thatcan cause excessive hiss is a noisy head unit unplug the amplifier inputR CA cables and ifthe hiss level reduces the source unit is atfault Electrical interference The inside of an automobile is a very hostile electrical environment The multitude of electrical systems such as the ignition system alternator fuel pumps air conditioners to mention justa few create radiated electrical fields as well as noise on the 12 volt supply and ground Remember to isolate the problem first unplug amplifier input RCA cables if the noise is still present check the speaker leads if not plug the RCA s back and investigate the source driving the amplifier one componentata time Aticking or whine that changes with engine RPM 1 This problem could be caused by radiation pickup of RCA cables too nearto a fuel pump ora distributor for instance relocate cables 2 Checkthatthe head unitground is connected straightto the vehicle chassis and does notuse factory wiring for ground 3 Tryto supply the head unitwith a clean 12 voltsupply directly from the battery instead of using a supply from the in dash wiring fusebox Aconstant whine This type of noise can be more difficultto pinpoint butis usually caused by some kind of instability causing oscillations in the system 1 Checkall connections especially for good grounds 2
9. LINE LEVEL GREEN PRE CLIP mE CONVERTER S RED MARD CLI D P d ha PENNEN wb oe La La E een Pr um NE cme OU ee Se esI Es aaia unu c BASS REMOTE BASS CONTROLLER CLIPPING CONTROL ee de YELLOW sorr cue Ur STA p POWERED BY RED HARD CLIP 4 Converts High Level OEM speaker wires to Ultra Clean RCA Low Level Outputs High Level Inputs Accepts all types of High level Inputs including floating ground and high voltages up to 30 volts Audio Signal Sense Hardwire Turn On Audio sense detects music signals from the OEM wires and activates the MX 1 As an option the module also offers a remote turn on wire Parametric Bass EQ Features Bass Boost adjustable Band Width wide amp narrow Low Pass and Subsonic Filter Clipping Indicators Visually indicates audio signals Pre Clip Soft Clip and Hard Clip Balanced Line Output Ultra clean DIN variable high voltage output for driving mono amps Remote Output Driver circuit to turn on amplifier when module activates Bass Remote Features for subwoofer Level control with built in clipping indicators Input amp Output Level Control Allows for gain matching both radio and amplifier audio signals MX 2 Deluxe High To Low Level Converter C af HIGH LEVEL F amp R INPUT CONTROL FI IGH REAR HIGH PASS FILTER PASS FILTER 12 dB OCT 12 dB OCT FRONT amp REAR STEREO OUTPUT MX 2 CONVER
10. LL A MONO signal source is required to bridge channel pair 3 4 such as would be 3IACH X OVER LP available from the mono sub bass output of an active crossover whether standalone or Control checklist built into a head unit or equalizer If you only have 1 set of RCA outputs from your Refer to the section Settings for Best Performance headunit you can simply connect those to the inputs for ch 1 2 and switch the MODE to Minimum final loudspeaker impedances 2ch The amplifier will auto sum the signal and provide mono output for bridged 2 ohm per channel in stereo mode channels 3 4 4 ohm mono bridged 5 EM A FULL RANGE is SPEAKERS MONO S OR SUB BASS L SPEAKER MBQUARTH z TO BATTERY 12v MI VIA FUSE STEREO LINE INPUT Fa emn 548 REMOTE TURN ON d CHASSIS GROUND MONO LINE INPUT Cif 6 FX1 400 FX1 600 FX1 1000 Mono Amplifiers FEATURES 1 Set of RCA inputs LEVEL Variable sensitivity from 0 2V to 6V BASS EQ Adjustable 45Hz bass boost from 0dB to 12dB SUBSONIC Variable from 10Hz to 40Hz LOW PASS Variable from 40Hz to 300Hz Interconnect cable checklist Connectthe inputs to a suitable source e g a head unitwith good quality RCA cables Use at least 14 gauge speaker wiring The amps have dual speaker terminals simplifying the hookup of multiple speakers These amps are mono 1 channel amplifiers which have multiple positive and negative connections for ea
11. Level to the left a bit and then try again If you reach a point where the output does not increase stop turning the Level control to the right as the amplifier subwoofer combo has reached its maxx output in this application MBQUARIE TROUBLE SHOOTING German Engineering The key to finding the problem in a misbehaving sound system is to isolate parts of that system in a logical fashion to track down the fault Description of the Diagnostic system built into all MB Quart amplifiers The diagnostic system will shut down the amplifier until reset by turning the head unit off and back on This state of affairs will be indicated by the front panel PROTECT LED lighting up under the following conditions 1 Ashortcircuiton the loudspeaker leads 2 Aninternal amplifier faultthatcauses a DC offseton the loudspeaker output Should the amplifier go into diagnostic mode simply disconnectall RCA and speaker leads while keeping 12 volt power ground and remote leads connected 1 Now turn the amplifier back on and ifthe diagnostic LED lights the amplifier has an internal fault 2 Ifnot plug the RCA cables back and resetthe amplifier Ifit goes into diagnostic now the faultlies in the input either with bad cables or source unit 3 Ifthe amplifier seems fine with RCA cables plugged in connectthe speakers one ata time and if one of the speakers or its wiring is faulty itwill activate the diagnostic system Amplifier heatsink overheating The
12. Make sure thatno speaker leads are shorting to exposed metal on the vehicle chassis 3 RCA cables are notorious for their problematic nature so check thatthese are good in particular the shield connections 2 Channel Amplifiers FEATURES 1 Set of RCA inputs LEVEL Variable sensitivity from 0 2V to 6V BASS EQ Adjustable 45Hz bass boost from 0dB to 9dB X OVER Selects internal crossover functions FULL Bypasses all crossovers for full frequency operation LPF Selects the built in LOW PASS filter variable from 30Hz to 150Hz HPF Selects the built in HIGH PASS filter variable from 10Hz to 1 2kHz 2 Channel Full Range Stereo Interconnect cable checklist Connect the two inputs of the amplifier to a Radio CD with quality RCA cables Switch setting checklist 1 2CH X OVER FULL 909 FULLRANGE cir i STEREO LINE INPUTS s 5 Ke MBQUARTH Mono Operation Here we show how to use the 2 channel amplifiers as a 1 channel unit by taking advantage of the mono bridging capability of all MB Quart amplifiers Interconnect cable checklist A MONO signal source is required to bridge channels 1 2 such as would be available from the mono sub bass output of an active crossover whether standalone or built into a head unit or equalizer If you only have 1 set of RCA outputs from your headunit you can simply connect those to the inputs for ch 1 2 and switch the X OVER to LP BP The amplifier will auto sum the signa
13. TER POWERED BY_ MAXXSONICS Converts High Level OEM speaker wires to Ultra Clean RCA Low Level Outputs High Level Inputs Accepts all types of High level Inputs including floating ground and high voltages up to 30 volts Audio Signal Sense Hardwire Turn On Audio sense detects music signals from the OEM wires and activates the MX 2 As an option the module also offers a remote turn on wire Parametric Bass EQ Provides a wide array of subwoofer output signal shaping controls to enhance bass response and sound quality including Bass Boost adjustable Bandwidth wide and narrow Low Pass and Subsonic Filter Accepts a wide range of incoming music signal levels while accommodating all types of head units and signal processors and controlling the output level to the amp to maximize a signal strength up to 9 volts Clipping Indicators Visual clipping indicators provide indication of damaging clipped signals to help protect the subwoofer s and amplifier Includes pre clip soft clip and full clip indications Music Shaping Shapes the music signal to achieve deep bass notes as low as 15Hz Bass Remote Included bas Remote features built in clipping indicators allows direct bass control from in dask or under dash MX 4 Add A Sub High To Low Level Converter wa Ww HIGH LEVEL SUBWOOFER LR amp RR INPUT OUTPUT LEVEL CONTROL POWERED BY MAXXSONICS MX 4 ADD A SUB T Converts Hig
14. e section Settings for Best Performance Switch setting checklist 1 2CH X OVER FULL Minimum final loudspeaker impedances 3 4CH X OVER FULL 2 ohm per channel MODE 4CH since 2 sets of RCA s are connected ee cu FULL RANGE SPEAKERS oh T BRIDGED BRIDGED tm tom MBQUARTH TO BATTERY 12v Ch varus FULL RANGE amp 48 G REMOTE TURN ON STEREO LINE o Weurs HE 3 G H cassis croun itia 2 or 3 Channel System Important Do not be tempted to connect the hot or positive outputs from any source together to obtain a mono signal as this could very well damage the output stage of that source Here we show how to use the 4 channel amplifiers as a 3 channel unit by taking Itis necessary to feed the SAME signal to both left and right inputs via a Y adapter RCA cable advantage of the mono bridging capability of all MB Quart amplifiers In order to create Connect the mono speaker positive terminal to the Ch4 and its negative terminal to Ch3 as a 2 channel system simply follow the example to also mono bridge channel pair 1 2 shown Interconnect cable checklist Connect the inputs of channel pair 1 2 to a suitable stereo source e g a head unit Switch setting checklist with good quality RCA cables 1 2CH X OVER FU
15. f the head unit and install fuses in the remaining amplifiers one by one till the complete system is powered up and functioning properly WIRE LENGTH SYSTEM AMPERAGE 7 10 ft 10 13 ft 13 16 ft 16 19 ft 19 22 ft 22 28 ft 39nv9 JHM NE SH 2 mene a pos e pu ee Le ee INSTALLATION INSTRUCTIONS Settings for Best Performance FX2 60 FX4 50 FX4 70 FX4 100 General At this point you are ready to get more specific on the settings for your amplifier High Pass When in Hi Pass operation this setting acts as a low frequency cut off for your system reproduction The point that you set it at cuts off any frequencies from reproduction beyond this point The 12 o clock position is a great starting point EXAMPLE If you adjust the High Pass to 100Hz the amplifier will not play frequencies below 100Hz but will play frequencies from 100Hz to the highest frequency the amplifier is capable of reproducing When in Low Pass Bandpass operation this setting acts as a low frequency cut off for your system reproduction aka Subsonic Filter The point that you set it at cuts off any frequencies from reproduction beyond this point The 12 o clock position is a great starting point EXAMPLE If you adjust the High Pass to 60Hz the amplifier will not play frequencies below 60Hz but will play frequencies from 60Hz to the chosen Low Pass frequency When in Flat Full operation the Low Pass crossover is bypassed Bass EQ This setting
16. g date of purchase All other parts and accessories sold with this product are warrantied to be free from defects in materials and workmanship for one 1 year from the date of purchase Maxxsonics will repair or replace at it s option and free of charge during the warranty period any system component that proves defective in materials and workmanship under normal installation use and service provided that the product is returned to the authorized MB QUART dealer from where it was purchased Please keep your purchasing slip for warranty reasons Bitte bewahren Sie Ihren Kaufbeleg fiir Garantiezwecke auf Veuillez conserver le recu de caisse pour la garantie Por favor conserve su comprobante de compra a efectos de garantia Conservate la ricevuta di acquisto ai fini della garanzia Coxpaunure noxxanyAcra ek ANA cnyyaeB rpe6yrouux npenocTaB leHHR rapaHTMH A photo copy of the original receipt must accompany the product being returned In the absence of the above the warranty is one 1 year from the date of manufacture There is no warranty for Unauthorized Internet Sales Any damage to the product as a result of misuse abuse accident incorrect wiring improper installation alteration of the date code or bar code labels revolution natural disaster or any sneaky stuff because someone messed up repair or alteration outside of our factory or Authorized Service Centers and anything else you have done that you should not have done is
17. h Level OEM speaker wires to Ultra Clean RCA Low Level Outputs High Level Inputs Accepts all types of High level Inputs including floating ground and high voltages up to 30 volts Audio Signal Sense Hardwire Turn On Audio sense detects music signals from the OEM wires and activates the MX 4 As an option the module also offers a remote turn on wire Remote Output Driver circuit to turn on amplifier when module Remote Output Driver circuit to turn on amplifier when module activates activates MBOUARTE Check out our videos of new products events and technical tutorials at www youtube com maxxsonicsusainc S USA INC O Ensell Ro ad E Zurich Illin s 60047 7 USA E Ma il infom POWERED Website www maxxsonics com FX2 60 FX4 50 FX4 70 FX4 100 FXL400 FX1600 FX11000
18. in the Radio CD manual If the Radio CD output sensitivity is 2 volts then adjust the amplifier LEVEL input to 2 volts If you are not sure what the Radio output sensitivity is follow these general guide lines Turn the level control up slowly till you hear distortion then back off a few degrees on the control If at any point your amplifier goes into protection you will need to turn the Level to the left a bit and then try again If you reach a point where the output does not increase stop turning the Level control to the right as the amplifier speaker combo has reached its maxx output in this application FX1 400 FX1 600 FX1 1000 General Atthis point you are ready to get more specific on the settings for your amplifier Subsonic This setting acts as a low frequency cut off for your system bass reproduction The point that you set it at cuts off any frequencies from reproduction beyond this point The 12 o clock position is a great starting point EXAMPLE If you adjust the Subsonic to 25Hz the amplifier will not play frequencies below 25Hz but will play frequencies from 25Hz to the chosen Low Pass frequency Bass EQ This setting is a fixed bass boost at 45Hz that is variable from 0 12dB This feature provides impact to your bass but if not adjusted correctly it can be over used and cause damage to your subwoofers and amplifiers It is best to slowly turn this setting clockwise until the desired punch is felt It is not recomme
19. l and provide mono output for bridged channels 1 2 Important Do not be tempted to connect the hot or positive outputs from any source together to obtain a mono signal as this could very well damage the output stage of that source MONO LINE INPUT a 5 8 MBQUARTE OUTPUT INPUT LEVEL BASSEQ HIGH PASS LOW PASS e H4 LO R Ov ON 0dB S9dB 30Hz 450Hz 10Hz 12kHz FULL HP LP XOVER o POWER PROTECTION POWER LED Indicates the powered up and turned on condition PROTECTION LED Indicates a high voltage low voltage short circuit hard clip over heating or DC fault condition LINE OUTPUT Full range RCA pass through Control checklist Refer to the section Settings for Best Performance Minimum final loudspeaker impedances E r go FULL RANGE Fae SPEAKERS L G H y O 2 mm E TO BATTERY 12v JU VIA FUSE 48 H REMOTE TURN ON 48 7 7 cassis GROUND You can also feed the SAME signal to both left and right inputs via a Y adapter RCA cable Connect the mono speaker positive terminal to the RIGHT and its negative terminal to LEFT as shown Switch setting checklist X OVER LP BP Control checklist Refer to the section Settings for Best Performance Minimum final loudspeaker impedances 4 ohm mono bridged
20. mped and soldered for reliability Make sure that none of the cable insulation can chafe against exposed metal in the vehicle causing short circuits to the chassis Safe connection sequence After all cables are run connect speaker wires to the speakers and amplifiers then run and plug in RCA cables Next connect all power ground and remote turn on leads Now connect all 12 volt cables to the amplifier s and distribution blocks and fuse holders Finally connect the main 12 volt cable to the battery with the main fuse removed and we are almost ready to power up the system Power up the system The following procedure may seem like overkill but there is nothing more frustrating when turning on a system for the first time and it does not work properly immediately First make sure the head unit is off and turn all level controls to minimum counterclockwise including the head unit volume control Set all equalizers to 0 dB no boost and all crossover frequency controls at approximate frequencies as recommended by the loudspeaker manufacturer Set all input selector and crossover switches as required for the application Remove all amplifier fuses and insert the main fuse at the battery If the fuse does not blow you can insert the fuse in one of the amplifiers and we are ready to turn on the system Turn the head unit on inserta CD or select a radio Station and increase the head unit volume control If the system sounds fine turn of
21. nded to exceed the 12 o clock position unless listening at a low volume or a low recording quality as this can result in high distortion and possibly clipping Low Pass The Low Pass control acts as a ceiling and doesn t allow frequencies to the right of the desired setting to be reproduced The 12 o clock position is a great starting point EXAMPLE If you adjustthe Low Pass to 80Hz the amplifier will not play frequencies above 80Hz but will play frequencies from 80Hz to the chosen Subsonic frequency Level Control Setup Ensure that the Level is turned completely to the left prior to turning the system on Next you should insert a CD or cassette that you are familiar with to use as a reference and turn the head unit volume control to about 8096 of its full setting The system sound level will of course be very low and the following procedures will help you to match the amplifier input sensitivities properly to the head unit output signal level Itis important to match the amplifier LEVEL input sensitivity to the Radio CD output sensitivity This can be located in the Radio CD manual If the Radio CD output sensitivity is 2 volts then adjust the amplifier LEVEL input to 2 volts If you are not sure what the Radio output sensitivity is follow these general guide lines Turn the level control up slowly till you hear distortion then back off a few degrees on the control If at any point your amplifier goes into protection you will need to turn the
22. se of wiring The 2 positives are the same internally and the 2 negatives are the same internally REMOTE POWER BASS BOOST SUBSONIC LOW PASS o ee oe oe PROTECT od 1248 10Hz 40Hz 40Hz 300Hz e e ev ox OUTPUT INPUT LEVEL L POWER LED Indicates the powered up and turned on condition PROTECT LED Indicates a high voltage low voltage short circuit hard clip over heating or DC fault condition LINE OUTPUT Full range RCA pass through Control checklist Referto the section Settings for Best Performance Minimum final loudspeaker impedance for the FX1 400 and FX1 600 2 Ohms Warning The FX1 400 and FX1 600 amps are 4 amp 2 Ohm stable only They are not 1 Ohm stable Minimum final loudspeaker impedance for the FX1 1000 1 Ohm SPEAKER OUTPUT EN i BOAR ic wowooumur a FROM HEADUNIT T ci e 9 E FULL RANGE STEREO LINE INPUT Y ADAPTOR NOT USED MONO SUBWOOFER TO BATTERY 12 Volts GL VIA FUSE i Lr REMOTE TURN ON SHH CHASSIS GROUND or a full range stereo line output For full range stereo line output you will need an optional Y Adaptor as shown 2 CHANNEL 4 CHANNEL 1 CHANNEL FEATURES FX1400 FX1 600 FX11000 OUTPUT POWER RATING ng FX4 100 Engineer MBQUARIE German ing Factor to
23. tter to connect the 12 volt terminal of each amplifier to the distribution block During this process please ensure that the main power fuse is removed to avoid shorting the electrical system The main fuse must be within 12 of the vehicles battery Ground each amplifier with as short a ground lead as possible directly to the vehicle chassis using at least 4 gauge wire or equivalent to the size of the amplifiers power wire Use a ground distribution block if you wish but it is extremely important to keep the main ground lead from this distribution block to the chassis as short as possible not more than 12 The ground connection integrity to the chassis is very important and the best way to achieve a good solid electrical and mechanical contact is to use a large round crimp lug crimped and soldered to the ground cable The next step is to scrape the paint off the vehicle chassis slightly larger than the ground lug at the connection point Drill a clearance hole in the chassis the same size as the lug hole and use a bolt spring washer and nut to securely fasten the ground lug Use petroleum jelly to coat the bolt lug connection to prevent oxidization with time TIP Use the same approach when installing head units equalizers or any audio equipment for that matter run short individual grounds from each piece directly to the vehicle chassis to minimize ground loops and system noise All power ground and speaker connections should be cri
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