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JL Audio 505 User's Manual

1. 24dB octave filter 24dB octave filter Select Ind slope for rear slope for front Independent Adjusts level of channels Adjusts level of channels Adjusts level of Input Mode sub channel high pass rear channels high pass front channels For preamp output 30 Hz Infrasonic Select Low for Select 12dB or Select xl Select Low for Select Low for to slave subwoofer For full range Filter for sub preamp level inputs 24dB octave filter range for rear preamp level inputs Amp Output to Select x1 range preamp level inputs Amp Output to amplifier s select preamp output channel or High for slope for sub Amp Output to filter freg or High for Select Ambience Rear Satellite for front filter freq or High for Front Satellite Sub LP select F R On or Off speaker level inputs channel low pass Subwoofers 50 500 Hz speaker level inputs Mode Off or On Speakers 50 500 Hz speaker level inputs Speakers l i I 12VDC Ground Remote Preamp Output Section Subwoofer Channel Control Section Subwoofer Output 250Wx1 Rear Fitar Sagtian Rear Inpyt Section Rear Speaker Oytputs 25Wx2 Front Fiter Section Front Input Sectjon Front Speaker Outputs Signal From
2. JL AUDIO 500 5 five channel system amplifier owner s manual Thank you for purchasing a JL Audio amplifier for your automotive sound system Your amplifier has been designed and manufactured to exacting standards in order to ensure years of musical enjoyment in your vebicle For maximum performance and extended warranty coverage we highly recommend that you have your new amplifier installed by an authorized JL Audio dealer Your authorized dealer has the training expertise and installation equipment to ensure optimum performance from this product Should you decide to install the amplifier yourself please take the time to read this manual thoroughly so as to familiarize yourself with its installation requirements and setup procedures If you have any questions regarding the instructions in this manual or any aspect of your amplifiers operation please contact your authorized JL Audio dealer for assistance If you need further assistance please call the JL Audio Technical Support Department at 954 443 1100 during business hours Eastern Time Zone JL AUDIO PROTECT YOUR HEARING We value you as a long term customer For that reason we urge you to practice restraint in the operation of this product so as not to damage your hearing and that of others in your vehicle Studies have shown that continuous exposure to high sound pressure levels can lead to permanent INSTALLATION APPLICATIONS This amplifier is designe
3. 24 dB octave Linkwitz Riley high pass with continuously variable cutoff frequency from 50 500 Hz switchable to a range of 500 5000 Hz via x10 switch Also provides low pass cutoff for front filter when bandpass mode is used SUBWOOFER CHANNEL Amplifier Topology H Bridge Class D Mono with impedance optimization and patented discrete drive circuitry Power Supply Independent pulse width modulation regulated switching power supply Rated Power 250W RMS x 1 5 4Q I IV 14 5V THD at Rated Power lt 0 05 4 50 Hz Signal to Noise Ratio gt 95 dB referred to rated power A weighted 20 Hz 20 kHz noise bandwidth Frequency Response 5 Hz 300 Hz 0 1 dB 5 Hz 500 Hz 0 3 dB Damping Factor gt 500 4Q 50 Hz gt 250 20 50 Hz Subwoofer Channel Filter State variable 12 dB octave Butterworth or 24 dB octave Linkwitz Riley low pass with continuously variable cutoff frequency from 40 200 Hz Defeatable LF Boost Single band fixed frequency 48 Hz fixed Q boost variable from 0 to 15 dB Defeatable Port for optional remote bass control to control variable boost from front of vehicle Infrasonic Filter 24 dB octave 30 Hz Defeatable PREAMP OUTPUT Tracking type low pass linked to subwoofer channel filter Filtering is defeatable to pass a full range signal from the front channel inputs or a summed signal from the front and rear channel inputs DIMENSIONS LxWxH 19 7
4. x 9 25 x 2 36 500mm x 235mm x 60mm Due to ongoing product development all specifications are subject to change without notice 28 JL AUDIO 500 5 JL AUDIO 500 5 29 INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions tput 250Wx1 Rear Filter Section Freq Range High Pass Filter Y HON x1 x10 Off 12dB 24dB 95 A 75 130 50 500 Filter Freq Hz Also sets low pass cutoff for Front Ch Bandpass filter when selected 12VDC Ground Remote Preamp Output Section Signal From OT Sub LP F R Inputs Front JL AUDIO 500 5 five channel system amplifier Left Ch Right Ch Rear Input Section Rear Speaker Outputs 25Wx2 Input Voltage Input Sens L R Ambience O O e Low High Off On E F R Input Mode 99 299 an Ri Tight i vena oe Left Ch Right Ch Bridged 30 JL AUDIO 500 5 ON Subwoofer Channel Control Section Infrasonic Filter Input From Input Voltage Input Sens Sub LP Filter OO Ed O Al Off 30Hz Ind F R Front Low High Remote Bass Port LF Boost dB Independent Sub Input Filter Freq Hz Right Front Filter Section Front Input Section Freq Range Filter Slope Input Voltage Input Sens x1 x10 12dB 24dB Low High Filter Mode GPS 130 AS e 500 Off BP HP Y HP Filter Freq Hz Left Ch Right Ch Off 12dB 24dB O Front Speaker Outputs DIOSE
5. 1 5 4Q IIV 14 5V Rated Power Bridged 200W RMS x 3 8Q IIV 14 5V THD at Rated Power lt 0 03 4Q per channel 20 Hz 20 kHz Signal to Noise Ratio gt 108 5 dB referred to rated power A weighted 20 Hz 20 kHz noise bandwidth Frequency Response 5 Hz 30 kHz 0 dB Damping Factor gt 200 4Q per ch 50 Hz gt 100 2Q per ch 50 Hz Slew Rate 25V us Front Filter State variable 2 dB octave Butterworth or 24 dB octave Linkwitz Riley High Pass with continuously variable cutoff frequency from 50 500 Hz switchable to a range of 500 5000 Hz via x10 switch Can also be cascaded from rear filter s cutoff frequency to operate as a bandpass filter for tri amp configurations Defeatable REAR CHANNELS Amplifier Topology Class AB with patented Absolute Symmetry dual N Channel MOSFET output design Power Supply Independent pulse width modulation regulated switching power supply Rated Power Stereo 25W RMS x 2 3 4Q IIV 14 5V Rated Power Bridged 50W RMS x 6 8Q 11V 14 5V THD at Rated Power lt 0 03 4Q per channel 20 Hz 20 kHz Signal to Noise Ratio gt 108 5 dB referred to rated power A weighted 20 Hz 20 kHz noise bandwidth Frequency Response 5 Hz 30 kHz 0 1 dB Damping Factor gt 200 4Q per ch 50 Hz gt 100 2Q per ch 50 Hz Slew Rate 25V ps Rear Filter State variable 12 dB octave Butterworth or
6. 5 with other amplifiers and wish to use a single main power wire use 2 AWG or 1 0 AWG main power wire depending on the overall current demands of all the amplifiers in the system This 2 AWG or 1 0 AWG power wire should terminate into a distribution block mounted as close to the amplifiers as possible and should connect to the 500 5 with 4 AWG power wire Please note that smaller AVVG numbers mean bigger wire and vice versa 1 0 AWG is biggest 2 AWG is smaller then 4 AWG then 8 AWG etc To connect the power wires to the amplifier first back out the set screw on the top of the amplifier using the supplied 2 5 mm hex wrench Strip 1 2 inch 12 mm of insulation from the end of each wire and insert the bare wire into the receptacle on the front panel of the amplifier seating it firmly so that no bare wire is exposed While holding the wire in place tighten the set screw firmly taking care not to strip the head of the screw The ground connection should be made using the same gauge wire as the power connection 4 AWG and should be kept as short as possible while accessing a solid piece of sheet metal in the vehicle The surface of the sheet metal should be sanded at the contact point to create a clean metal to metal connection between the chassis and the termination of the ground wire The use of a star washer to lock down the connection is advisable Any wires run through metal barriers such as firewalls must
7. Hz Filter Freq Hz Left Ch Right Ch Bridged HP Filter Freq Hz Left Ch Right Ch B F 1 T T T T Left and Right Jack for LF Boost Left and Right Selects Output Selects Rear Filter Left and Right Selects Selects Front Filter Selects Bandpass Left and Right Preamp Output Jacks Remote Bass Control Sub Input Jacks Filter Cutoff Cutoff Frequency Input Jacks 2ch 4ch Mode Cutoff Frequency or High Pass Input Jacks pg 9 Control Knob pg 10 pg 6 Frequency Pg 8 pg 6 pg 7 pg 8 Mode for pg 6 pg 10 pg 9 Output Filter JL AUDIO 500 5 pg 7 JL AUDIO 500 5 PRODUCT DESCRIPTION The JL Audio 500 5 is a five channel system amplifier utilizing patented Absolute Symmetry Class AB technology for its front and rear channels and patented Class D technology for its subwoofer channel Front and subwoofer channels benefit from JL Audio s exclusive R I PS power supply design which optimizes the output of each section for any impedance between 5 and 4 ohms per channel 4 he staggered power distribution of the front and rear channel pairs 100W x 2 for front and 25 x 2 for rear allows for a wide variety of application options The 500 5 can be operated in the following modes 1 As a full system amplifier in bi amp mode with its subwoofer channel driving subwoofers in low pass mode 250W x 1 front channels driving front component speakers 100W x 2 in high pass mode and rear channels dr
8. Input Voltage Input Sens L R Ambience Freq Range Filter Slope Input Voltage D Sens Sub LP F R Inputs Front Off 30Hz Ind F R Front Low High Oft 12dB 24dB IS x1 x10 Off 124B 24dB Low High Off On OTTO x1 x10 12dB 24dB Low High oer Y N ot ne ie OO eon Vy N F R Input Mode S ao Filter Mode 4 ma 20 El JL AUDIO 500 5 WH MONO OUTPUT ONLY WH ava E five channel system amplifier o 15 an F sy 50 Off BP HP Remote Bass Pote Left Ch Right Ch Port LF Boost dB nadegendent Sub Input Filter Freq Hz Filter Freq Hz Left Ch Right Ch HP Filter Freq Hz Left Ch Right Ch Bridgeo e N t ii T T T T To input of Control LF bass Input from source Select low pass Select high pass filter freq for rear Input from Select 2ch Select high pass Select BP Not Used additional boost level with unit rear outputs filter freq for channels 500 5000 Hz In this source unit Input Mode cutoff freq for Bandpass amplifier if used on board knob or subwoofer sub channel mode this setting also determines or processor the front channel Mode or optional outputs 40 200 Hz the low pass cutoff frequency for bandpass filter B Two pairs of inputs connected to the rear and subwoofer in RBC 1I controller puts of the 500 5 a source unit or processor with front and rear pairs of outputs is required In this mode the user has the ability to fade or control the level of the subwoofer channel relative to the mid and hig
9. JL AUDIO 500 5 the 12dB or 24dB position These features will not work with the Sub LP Filter switch in the Off position This is to prevent cascading the processing of multiple amplifiers when configured in a master slave arrangement If you are using an external active crossover and would like to use the LF Boost and Infrasonic Filter features set the Amp LP Filter switch on 12dB and rotate the frequency selection knob fully clockwise to the 200 Hz position This will activate the bass processing features without significantly affecting the crossover point selected by the external active crossover SPEAKER OUTPUTS The 500 5 employs JL Audio s exclusive Regulated Intelligent Power Supply R I PS design on its front and subwoofer channels The operation of the RILPS system is independent for each pair of channels This sophisticated power supply allows the amplifier to produce its optimum power 100 watts x 2 for the front channels and 250 W x for the subwoofer channel over a wide range of speaker impedances Unlike conventional amplifiers that require a specific impedance to produce optimum power the R I PS equipped 500 5 gives you the freedom to use a variety of speaker configurations that achieve final nominal impedances between 1 5 4Q per channel without sacrificing power output or sound quality When bridged the front channel pair will optimize output
10. LF Boost or Infrasonic Filter processing selected for the amplifier EICAUTION If the Output Mode switch is in the Sub LP position and the Sub LP Filter switch is in the Off position the preamp output will be a 12dB octave low pass with the Bass Control processing added to it THIS IS NOTA PREFERRED OPERATING MODE DO NOT USE THIS MODE FOR MASTER SLAVE CONFIGURATIONS Note The signal level of the Preamp Output is affected by the setting of the Input Voltage switches of the input section s chosen by the Signal From switch See the Input Voltage Range section page 6 for details on input voltage settings The preamp output level is not affected by the Input Sens rotary controls BASS PROCESSING The 500 5 s subwoofer channel control section also includes some basic bass processing tools These consist of two primary components a fixed frequency 24 dB octave infrasonic filter and a fixed frequency Q single band equalizer centered at 48 Hz Subwoofer Channel Control Section Infrasonic Filter Input From Input Voltage Input Sens Sub LP Filter Off 30Hz Ind F R Front Low High Off 12dB 24dB 7 65 a AL o HN AR d 15 Y ad 200 Remote Bass Lafe Right Port LF Boost dB Independent Sub Input Filter Freq Hz 1 Infrasonic Filter The infrasonic filter is a 24 dB octave high pass filter with a fixed cutoff frequency
11. Mode O H 50 500 Off BP HP HP Filter Freq Hz Le 1 Filter Mode Control Located in the Front Filter Section this switch allows you to configure the Front Channel filter into one of three modes Off Defeated Defeats the filter for the Front Channels completely allowing the full range of frequencies present at the inputs to feed that pair of channels This is useful for systems utilizing outboard crossovers or requiring full range reproduction from these channels BP Bandpass Configures the Front Channel Filter to attenuate frequencies above the selected filter frequency and below the frequency selected in the Rear Channel High Pass Filter This creates a true bandpass filter well surted for driving mid bass or mid range speakers in a tri amplified system see page 18 for details HP High Pass Configures the Front Channel Fitter to attenuate frequencies below the selected filter frequency Useful for connection of component speakers to the front channels in a bi amplified system 2 Filter Slope Control This switch allows you o select from two filter slopes 12dB Configures the Front Channel Filter to attenuate frequencies below the selected filter frequency at a rate of 2 dB per octave Butterworth alignment 24dB Configures the Front Channel Filter to attenuate frequencies below the selected filter frequency at a rate of 24 dB per oc
12. Range HighPass Filter Input Voltage Input Sens L R Ambience Freq Range Filter Slope Input Voltage Input Sens Sub LP F R Inputs Front Off 30Hz Ind F R Front Low High Off 12dB 24dB EG x1 x10 Dft 12d8 24dB Low High Off On MTS x1 x10 12d8 24dB Low High Sooo Vy EE st A OD ao F A Input Mode j ER 3 Fiter Mode Y 0 m X E JL AUDIO 500 5 Y MONO OUTPUT ONLY a Left Aight five channel system amplifier e 40 200 sol s00 Off BP HP Remote Bass Left Right 5 LeftCh Right Ch Port LF Boost dB Independent Sub Input Fiter Freq Hz Filter Freg Hz Left Ch Right Ch Bridged HP Filter Freq H2 Left Ch Right Ch Bridged J t y gt h gt ps A t A 4 r T T T T T To input of Control LF bass Not Used Select low pass Select high pass Input from rear Select 4ch Select high pass Select HP Input from front additional boost level with filter freq for filter freq for rear outputs of source Input Mode filter freq for High Pass outputs of source amplifier if used on board knob sub channel channels 50 500 Hz unit or processor rear channels Mode unit or processor or optional 40 200 Hz 50 500 Hz RBC controller B Two pairs of inputs connected to the front and rear inputs of the 500 5 a source unit or processor with front and rear pairs of outputs is required In this mode the user has front to rear fading capability with non fading sub bass level This means that the relative level of the front and rear satellites ca
13. Section Front Spesler Outputs Signal From Infrasonic Fitter Input From Input Voltage Input Sens Sub LP Filter Freq Range HighPass Filter Input Voltage Input Sens L R Ambience Freq Range Filter Slope Input Voltage Input Sens Sub LP F R Inputs Front Off 30Hz Ind F R Front Low High Oft 12d8B 24dB FO x1 x10 Off 124B 24dB Low High Off On foo 00 x1 x10 12d8 24dB Low High 0000 f Se ad ae OO eo f EE F R Input Mode AE aso Fiter Mode f JL AUDIO 500 5 IN ie oo i in CE E DoF i E MONO OUTPUT ONLY i ight i i five chennel syete amplifier SY Sas A a SD apap Left Right PS onapne Y Lett Right Remote Bass Lore Pig tae Left Ch Right Ch Port LF Boost dB Independent Sub Input Filter Freq Hz Filter Freq Hz Left Ch Right Ch y HP Filter Freq Hz Left Ch Right Ch i T T T T T To input of Control LF bass Input from sub Select low pass Select high pass Input from rear Select 4ch Select high pass Select HP Input from front additional boost level with outputs of source filter freq for filter freq for rear outputs of source Input Mode filter freq for High Pass outputs of source amplifier if used on board knob unit or processor sub channel channels 50 500 Hz unit or processor rear channels Mode unit or processor or optional 40 200 Hz 50 500 Hz RBC I controller D Three pairs of inputs connected to the rear front and subwoofer inputs of the 500 5 This mode is applicable
14. This can be used to diagnose a short circuit by only connecting one of the amplifier sections at a time front rear and subwoofer The amber LED will light when you connect the section that is experiencing the problem and turn the volume up There is only one condition that will shut down an undamaged 500 5 completely If battery voltage drops below 10 volts the entire amplifier will shut itself off The green Power indicator on the top of the amplifier will turn off when this occurs The amplifier will turn back on when voltage climbs back above 10 volts This may happen in a rapid cycle when bass heavy program material causes a weak charging system to dip below 10 volts momentarily If this is happening in your system have your charging system inspected to make sure it is working properly A 0 5 or 1 0 Farad rapid discharge capacitor connected in parallel to the amplifier power connections will minimize these short duration voltage dips in most systems that are having this problem For information on troubleshooting this amplifier refer to Appendix D page 26 12 JL AUDIO 500 5 SERVICINGYOUR JL AUDIO AMPLIFIER If your amplifier fails or malfunctions please return it to your authorized JL Audio dealer so that it may be sent in to JL Audio for service There are no user serviceable parts or fuses inside the amplifier The unique nature of the circuitry in the JL Audio amplifiers requires sp
15. a steep 24dB per octave slope Subwoofer Channel Control Section Infrasonic Filter Input From Input Voltage Input Sens Sub LP Filter Off 30Hz Ind F R Front Low High Off 12dB 24dB 7 q 65 ss m0 Wg 55 85 O O o 15 Y 40 200 Remote Bass Left Right Port LF Boost dB Independent Sub Input Filter Freq Hz 1 Sub LP Filter This switch located in the Subwoofer Channel Control Section configures the low pass filter for the subwoofer channel into one of three modes Off Defeats the filter for the subwoofer channels completely allowing the full range of frequencies present at the input to feed the sub channel This is useful for systems utilizing outboard crossovers Keep in mind that defeating the Sub LP Filter also defeats the LF Boost and Infrasonic Filter With the Sub LP Filter defeated Off the subwoofer channel s upper frequency response limit is 500 Hz due to tts bass specific Class D design 12dB Configures the filter for the subwoofer channel to attenuate frequencies above the selected filter frequency at a rate of 12 dB per octave Butterworth alignment 24dB Configures the filter for the subwoofer channel to attenuate frequencies above the selected filter frequency at a rate of 24 dB per octave Linkwitz Riley alignment Depending on the subwoofer system and the vehicle different slopes may be required to produce a
16. can be used to match up the signal level of the system to produce the desired level from the amplifier Rotating the control clockwise will result in higher sensitivity louder for a given input voltage Rotating the control counterclockwise will result in lower sensitivity quieter for a given input voltage Be aware that each of the three Input Sens adjustments will have to be made regardless of how many inputs are feeding the amplifier These controls will allow you to set the appropriate relative levels for the subwoofer channels and the front and rear channels Ey iMPORTANT To properly set each set of amplifier channels for maximum clean output please refer to Appendix B page 22 in this manual After using this procedure you can then adjust the relative level of each channel pair by adjusting the input sensitivity downward on either or both channel pairs if they require attenuation to achieve the desired system balance Do not increase the Input Sens setting for 6 JL AUDIO 500 5 any amplifier in the system beyond the maximum level established during the procedure outlined in Appendix B page 22 Doing so will result in audible distortion and possible speaker damage Be aware that all three Input Sens adjustments will have to be made regardless of how many input cables are feeding the amplifier These controls will allow you to set the appropriate relative levels for the Front R
17. is present you will experience distorted and or attenuated output The Low Q light may also illuminate in this situation lt may be helpful to disconnect the speaker wires from the amplifier and use a different set of wires connected to a test speaker Check the nominal load impedance to verify that the front and subwoofer channels of the amplifier are driving loads between 1 5 4Q per channel and that the rear channels are driving loads between 3 4Q per channel Check the input signal and input signal cables to make sure signal is present at all active inputs and the cables are not pinched or loose It may be helpful to try a different set of cables and or a different signal source to be sure MY AMPLIFIER SHUTS OFF ONCE IN A WHILE USUALLY AT HIGHER VOLUMES Check your voltage source and grounding point The R PS power supply is rated to operate with source voltages between 11 14 5V Shutdown problems at higher levels can occur when the charging system voltage drops below 10 volts These dips can be of very short duration making them extremely difficult to detect with a common DC voltmeter To ensure proper voltage inspect all wiring and termination points It is also a good idea to improve the vehicle s factory ground wire and termination point Grounding problems are the leading cause of mis diagnosed amplifier failures 26 JL AUDIO 500 5 MY AMPLIFIER TURNS ON BUT THERE IS NO OUTPUT Check the inpu
18. of 30 Hz This filter is designed to conserve amplifier power and protect subwoofer systems without audibly degrading the sub bass output With ported enclosures the use of the infrasonic fitter is highly recommended to protect the speaker s from excessive excursion below box tuning With sealed enclosures the use of the filter is less necessary but can still help protect the speaker system The infrasonic filter can be completely defeated by selecting the Off position on the Infrasonic Filter switch This bypasses all signal from flowing through the circuit 2 LF Low frequency Boost This feature allows the user to control the boost of a fixed Q fixed frequency equalization band centered at 48 Hz The LF Boost rotary control determines how much boost in dB you are adding to the bass signal A range of 0 15 dB of boost is available If no boost is desired rotate the LF Boost control fully counterclockwise The Remote Bass Port allows the connection of an optional remote boost knob the RBC 1 that can be mounted in the front of the vehicle This optional control takes the place of the LF Boost knob on the amplifier when connected and bypasses the LF Boost rotary control on the amplifier EMPORTANT The LF Boost and Infrasonic Filter features will only operate when the subwoofer channel s filter is activated with the Sub LP Filter switch in 10
19. outputs is level and front to rear fading can be controlled from that the relative level of the front and rear satellites required In this mode the source unit or he front of the vehicle See diagram D on page 6 Select 12dB or Select 12dB or 24dB octave filter 24dB octave filter slope for rear slope for front Select F R Adjusts level of channels Adjusts level of channels Adjusts level of Input Mode sub channel high pass rear channels high pass front channels For preamp output 30 Hz Infrasonic Select Low for Select 12dB or Select xI Select Low for Select Low for to slave subwoofer For full range Filter for sub preamp level inputs 24dB octave filter range for rear preamp level inputs Amp Output to Select xl range preamp level inputs Amp Output to amplifier s select preamp output channel or High for slope for sub Amp Output to filter freq or High for Select Ambience Rear Satellite for front filter freq or High for Front Satellite Sub LP select F R On or Off speaker level inputs channel low pass Subwoofers 50 500 Hz speaker level inputs Mode Off or On Speakers 50 500 Hz speaker level inputs Speakers 12VDC Ground Remote Preamp Output Section ar Channel Control Sertion Subwoofer Output 250Wx1 Rain Filter Section Rear Inpyt Section Rear Speaker Oxtputs 25Wxe2 Front Filter Becuon Front Input Section Front Speaker Outputs Signal From Infrasonic Fitter Input From Inp
20. smooth transition to the midbass speakers in the system Experiment to find the slope which best matches the acoustic requirements of your system Hint A trunk mounted sub whose output has to fight through a rear deck or a back seat often benefits from the 12 dB per octave slope which lets more upper bass content pass through A sub that fires directly into the listening environment is more likely to benefit from a 24 dB per octave slope The above hint is not a set in stone rule You should always listen to the system carefully to determine the best choice as vehicle acoustics and other factors play a big role in choosing the most appropriate filter slope 2 Filter Freq Hz The filter frequency markings surrounding this rotary control are for reference purposes and are generally accurate to within 1 3 octave or better If you would like to a elect the filter cutoff frequency with a higher level of precision consult Chart A2 in Appendix A of this manual page 20 PREAMP OUTPUT SECTION The 500 5 incorporates a flexible preamp output section permitting additional amplifiers to be added to the system This pre amp output can be configured three different ways using the switch labeled Signal From in the Preamp Output Section Preamp Output Section Signal From Infra Sub LP F R Inputs Front ol OO Rem Left Ch Right Ch 1 Sub LP The preamp output delivers the same m
21. this mode the source unit or processor fader adjusts the relative level of the subwoofer channel vs all four satellite channels as a whole The relative level of the front and rear channels is pre set with the amplifier input sensitivity controls and cannot be adjusted from the source unit MENTA siere idr 24dB octave filter 24dB octave filter Select Ind slope for rear slope for front Independent Adjusts level of channels Adjusts level of channels Adjusts level of Input Mode sub channel high pass rear channels high pass front channels For preamp output 30 Hz Infrasonic Select Low for Select 12dB or Select x1 Select Low for Select Low for to slave subwoofer For full range Filter for sub preamp level inputs 24dB octave filter range for rear preamp level inputs Amp Output to Select xl range preamp level inputs Amp Output to amplifier s select preamp output channel or High for slope for sub Amp Output to filter freq or High for Select Ambience Rear Satellite for front filter freq or High for Front Satellite Sub LP select F R On or Off speaker level inputs channel low pass Subwoofers 50 500 Hz speaker level inputs Mode Off or On Speakers 50 500 Hz speaker level inputs Speakers 12VDC Ground Remote Preamp Output Section Subwoofer Channel Control Section Subwoofer Output 250Wx1 Rear Fitter Section Rear Input Section Rear Speaker Oytputs 25Wx2 Front Fiter Section Front Input
22. Filter Input From Cm a Sub LP F R Inputs Front Off 30H2z Ind F R Front Low High 9 Me OO 29 4 Remote Bass Port Input Voltage Input Sens Sub LP Filter Freq Range HighPass Fiter Input Voltage Input Sens L R Ambience Oft 1208 24d8 ED x1 x10 Off 12dB 24dB Low High Oft On E F R Input Mode Front Ch Tont a inputs end Left Ch Right Ch n J Rear JL AUDIO 500 5 five channel system amplifier acu Off BP HP 7 Ab Filter Mode i x Bridged Left Ch Right Ch LF Boost dB Independent Sub Input Filter Freq Hz Filter Freq Hz HP Filter Freq Hz Left Ch Connect 500 5 Preamp Output to 250 1 Slave A Input Connect 500 5 Input to Output from Source Unit SLAVE A SLAVE B Freq Range Filter Slope Input Voltage oO LOO 00 x1 x10 1248 2448 Low High Right Ch 12VDC Ground Remote Preamp Output Section 12VDC Ground Remote Output Mode Ampffier Input Section Subwoofer Output Input Voltage Input Sens Signal Sensing Amplifier Input Section wo Signal Sensing Subwoofer Output 0000 MONO OUTPUT ONLY FulkRange Low Pass HighPass O SI Left Ch Right Ch Left Ch Right Ch Left Ch Right Ch Low High JL AUDIO 250 1 monoblock subwoofer amplifier JL AUDIO 250 1 monoblock subwoofer am
23. Ground Remote Preamp Output Section Subwoofer Channel Control Section Subwoofer Output 250WWx1 Pebr Fiter Section Rear Input Section Rear Speaker Outputs 25Wx2 Front Filter Section Front Input Section Front Speaker Outputs Signal From Infrasonic Filter Input From Input Voltage O Sens Sub LP Filter Freq Range High Pass Filter Input Voltage Input Sens L R Ambience Freg Range Filter Slope Input Voltage Input Sens Sub LP F R Inputs Front Off 30Hz Ind F R Front Low High Oft 12dB 24dB area x1 x10 Off 124B 24dB Low High Off On FASES x1 x10 12d8 24dB Low High AAN ODO 0000 lA C ih D JL AUDIO 500 5 MONO OUTPUT ONLY 2ch 4ch five channel system amplifier ad ac ohini so sm 0f BP HP Remote Bass Sie Left Ch Right Ch Port LF Boost dB dependere Sub Input Filter Freq Hz Fiter Freq Hz Left Ch Right Ch Bridged HP Filter Freq H2 Left Ch Right Ch Bridgec T T T T T To input of Control LF bass Not Used Select low pass Select high pass filter freq for rear Input from Select 2ch Select high pass Select BP Not Used additional boost level with filter freq for channels 500 5000 Hz In this source unit Input Mode cutoff freq for Bandpass amplifier if used on board knob sub channel mode this setting also determines or processor the rear Mode or optional 40 200 Hz the low pass cutoff frequency for channel bandpass RBC I controller the front midwoofer channels filter 50 500 Hz A Single pair of inputs c
24. Infrasonic Filter Input From Input Voltage Input Sens Sub LP Filter Freq Range HighPass Filter Input Voltage Input Sens L R Ambience Freg Range Filter Slope Input Voltage Input Sens HE HE E 2 mE ooo fexenones m GORROS Sub LP F R Inputs Front Off 30Hz Ind F R Front Low High Oft 12d8 24dB x1 x10 Off 124B 24dB Low High Off On x1 x10 12d8 24dB Low High S a E wm 070 es A F R Input Mode 75 che ase Fiter Mode PASS JL AUDIO 500 5 a is m i oF E S MONO DUTPUT ONLY i i i five channel system amplifier d Sis ad 200 N Y 2ch 4ch Left so Eco DEPP See Y Left Right Remote Bass Left Right Left Ch Right Ch Port LF Boost dB Independent Sub Input Filter Freq Hz Filter Freq Hz Left Ch Right Ch Bridged HP Filter Freq Hz Left Ch Right Ch Bridgeo T T T T T To input of Control LF bass Input from rear Select low pass Select high pass Input from front Select 2ch Select high pass Select HP Not Used additional boost level with outputs of source filter freq for filter freq for rear outputs of source Input Mode filter freq for High Pass amplifier if used on board knob unit or processor sub channel channels 50 500 Hz unit or processor rear channels Mode or optional 40 200 Hz 50 500 Hz RBC I controller C Two pairs of inputs connected to the rear and subwoofer inputs of the 500 5 a source unit or processor with front and rear outputs is required In
25. S 0000 Right Left Subwoofer Output 250Wx1 oooo Ja 10 MONO OUTPUT ONLY Bridged x1 x1 Filter Freq Hz JL AUDIO 500 5 31 LIMITED WARRANTY AMPLIFIERS USA JL AUDIO warrants this product to be free of defects in materials and workmanship for a period of ninety 90 days from the original date of purchase The warranty term is extended to two 2 years if installation is performed or approved by an authorized JL AUDIO dealer proof of installation or approval required on purchase receipt This warranty is not transferrable and applies only to the original purchaser from an authorized JL AUDIO dealer Should service be necessary under this warranty for any reason due to manufacturing defect or malfunction JL AUDIO will at its discretion repair or replace the defective product with new or remanufactured product at no charge Damage caused by the following is not covered under warranty accident misuse abuse product modification or neglect failure to follow installation instructions unauthorized repair attempts misrepresentations by the seller This warranty does not cover incidental or consequential damages and does not cover the cost of removing or reinstalling the unit s Cosmetic damage due to accident or normal wear and tear is not covered under warranty Warranty is void if the product s serial number has been removed or defaced Any applicable impl
26. be protected with a high quality rubber grommet to prevent damage to the insulation of the wire Failure to do so may result in a dangerous short circuit EMPORTANT Many vehicles employ small 10 AWG 6 AWG wire to ground the battery to the vehicle chassis and to connect the alternator s positive connection to the battery To prevent voltage drops these wires should be upgraded to 4 AWG when installing amplifier systems with main fuse ratings above 60A FUSE REQUIREMENTS It is absolutely vital that the main power wire s to the amplifier s in the system be fused within 18 inches 45 cm of the positive battery post connection The fuse value at each power wire should be high enough for all of the equipment being run from that power wire If only the 500 5 is being run from that power wire we recommend a 50A fuse be used AGU big glass fuse or MaxiFuse big plastic body fuse types are recommended No fuse is required or recommended directly before the amplifier power connection If one is desired we recommend the use of a 50A AGU fuse or MaxiFuse type JL AUDIO 500 5 TURN ON LEAD The 500 5 uses a conventional 12V remote turn on lead typically controlled by the source unit s remote turn on output The amplifier will turn on when 12V is present at its Remote input and turn off when 12V is switched off If a source unit does not have a dedicated remote turn on output the amplifiers turn on lead can b
27. between 3 8Q The rear channel pair will optimize output between 6 8Q The operation of the RIPS circuitry is entirely automatic and adjusts itself every time the amplifier is turned on according to the lowest impedance present at the speaker load There are no user controls to configure The system operates through multiple stages of impedance optimization choosing the stage most appropriate to the actual impedance of the speakers you connect to it Subwoofer Output 250Wx1 Re iter Freq I Gexexenen 24dB xy 120 O q MONO OUTPUT ONLY E 200 q Hz Filter F EMPORTANT If you connect a load higher than 4Q nominal per channel or 8Q in bridged mode for the front and rear channels power will drop by half with every doubling of impedance above 4Q stereo 8Q mono If you connect a load lower than 1 542 nominal per channel the amplifier protection circuitry activates a safe mode which reduces amplifier power to protect the circuitry from failure the yellow Low Q LED lights to indicate that this has happened See page 2 for details Speaker loads below 5Q nominal per channel are not recommended and may cause the amplifier output to distort excessively Ey iMPORTANT The rear channels of the 500 5 do not employ RPS optimization and are designed to deliver rated power into loads between 3 and 4Q per channel Operating the rear channels below 3Q may result in excessive
28. d for operation in vehicles with 12V negative ground electrical systems Use of this product in vehicles with positive ground and or voltages other than 12V may result in damage to the product and will void the warranty PLANNING YOUR INSTALLATION It is important that you take the time to read this manual and that you plan out your installation carefully The following are some considerations that you must take into account when planning your installation If mounting the amplifier under a seat make sure there is at least inch 2 5 cm of space above the amplifier heat sink fins to permit proper cooling Safety Considerations irreparable power ampli hearing loss This and all other high fiers are capable of producing such high This prod uct is not certified or approved for use in aircraft Do not a empt to bridge the outputs of this sound pressure levels when connected to a speaker system Please limit your continuous exposure to high volume levels While driving operate your audio system in a manner that still allows you to hear necessary noises to operate your vehicle safely horns sirens etc SERIAL NUMBER In the event that your amplifier requires service or is ever stolen you will need to have a record of the product s serial number Please take the time to enter that number in the space provided below The serial number can be found on the bottom panel of the amp
29. d power when connected to any load impedance from 1 5 4Q per channel 3 80 bridged and when connected to a charging system with any voltage from 14 5V This design is beneficial for many reasons One of these reasons is ease of setup Because each JL Audio amplifier will always deliver the same amount of power within its operational range of impedances and supply voltages the maximum unclipped output is very predictable This makes setting the gain structure via the input sensitivity controls very simple Following the directions below will allow the user to adjust the input sensitivity of the amplifier s simply and easily in just a few minutes using equipment which is commonly available in installation bays Necessary Equipment e Digital AC Voltmeter CD with a sine wave test tone recorded at 0 dB reference level in the frequency range to be amplified for that set of channels 50 Hz for subwoofer channels kHz for a midrange application Do not use attenuated test tones 10 dB 20 dB etc The Nine Step Procedure follow this procedure for each set of channels 1 Disconnect the speaker s from the amplifiers Front Rear and Subwoofer Output connectors 2 Turn Off all processing on the source unit and amplifier bass treble loudness EQ etc 3 In all three input sections switch the Input Voltage to Low and turn the Input Sens control all the way down counterclockw
30. distortion and or shutting down of these channels and is not recommended BRIDGING CONSIDERATIONS Bridging is the practice of combining the output of two amplifier channels to drive a single load When bridged each channel produces signals of equal magnitude but opposite polarity The combined output of the two channels provides twice the output voltage available from a single channel The 500 5 has been designed for bridging of its front and rear channel pairs without the need for input inversion adaptors By iMPORTANT Operating bridged channel pairs into a load lower than 3Q is not recommended stion Front Speaker Outputs osos ht Ch Bridged To bridge a pair of channels use the Left and Right speaker connectors only the Left and Right remain unused Then connect a mono signal to both left and right RCA inputs for JL AUDIO 500 5 11 that channel pair This requires an RCA Yadaptor not included Connection of only one RCA input will result in reduced power output increased distortion and can cause the amplifier to overheat Do not do this Instead use a Yadaptor to split the mono signal into both left and right RCA inputs Why a mono signal If you are bridging a pair of channels and use a stereo input the only information that will reach the amplifier stage is the common phase portion of the signal This may be useful for passive
31. e connected to 12V via a switch that derives power from an ignition switched circurt The 500 5 s Remote turn on connector is designed to accept 18 AWG 8 AWG wire 12 AWG is more than adequate for this purpose To connect the remote turn on wire to the amplifier first back out the set screw on the top of the amplifier using the supplied hex wrench Strip 1 2 inch 12mm of wire and insert the bare wire into the receptacle on the front panel of the amplifier seating it firmly so that no bare wire is exposed When using smaller wire it may be necessary to strip inch of insulation from the wire and fold the bare wire in half prior to insertion While holding the wire in the terminal tighten the set screw firmly taking care not to strip the head of the screw and making sure that the wire is firmly gripped by the set screw INPUT SECTIONS Three left right pairs of RCA type jacks are provided for input one pair for the subwoofer channel one pair for the rear channels and one pair for the front channels There are several ways that the 500 5 s inputs can be configured Please read the System Configurations section of this manual page 14 carefully to determine the proper configuration for your application Input Voltage Range A wide range of signal input voltages can be accommodated by each of the 500 5 s input stages 200mV 8V This wide range is split up into two sub ranges accessible via switches located
32. ear and Subwoofer Channels Subwoofer Input From Selection Located to the left of the Input Voltage switch in the Subwoofer Channel Control Section is a switch labeled Input From This switch determines whether the subwoofer channel will receive its input from the Independent Sub Input jacks select Ind or from a sum of the Front and Rear Channel Input signals select F R or from the Front Channel Inputs only select Front Front and Rear Channel Input Mode Selection Located to the right of the rear channel input Jacks in the Rear Input Section is a switch labeled F R Input Mode This switch determines whether the front and rear channels will receive their input independently select 4ch or from the Rear Input Section jacks only select 2ch CROSSOVER CONTROLS Crossovers are groups of individual electronic fitters which allow only certain frequency ranges to pass through them by attenuating frequencies outside the selected range These filters allow the user to specify what frequency range will be sent out of each channel section of the amplifier This in turn allows each speaker system to only reproduce a range of frequencies it is well surted for resulting in reduced distortion and improved fidelity Front Filter Section Wx2 Front Filter Section Fro Freq Range Filter Slope Input gt m m m x1 x10 129B 24dB Lon D JE aa Fiter
33. ecifically trained service personnel Do not attempt to service the amplifier yourself or through unauthorized repair facilities This will not only void the warranty but may result in the creation of more problems within the amplifier If you have any questions about the installation or setup of the amplifier not covered in this manual please contact your dealer or the JL AUDIO Technical Department for assistance 954 443 1100 9 00 AM 5 30 PM Eastern Time Monday Friday JL AUDIO 500 5 13 SYSTEM CONFIGURATIONS STEREO BI AMP MODE This is the most common application for a Input Connection Options for the Stereo Bi Amp mode are as follows A Single pair of inputs connected to the rear inputs of the 500 5 In this mode the user has no fading capability between the front and rear channels and no separate adjustability of subwoofer level from 5 channel amplifier In this mode the front satellite speakers rear satellite speakers and subwoofer s are and filtered Front and rear independently powered channels each have independent high pass filters and the subwoofer channel fitter Left and right fron 100W x 2 1 5 4Q per channel Left and right rear satellite channels deliver 25W x 2 3 4Q per mono subwoofer channel delivers has an independent low pass the front of the vehicle See diagram A below B Two pairs of inputs connected to the front and rear inputs of the 500 5 a source unit or processor
34. ector pg 7 pg 6 pg 8 pg 6 pg 7 pg 6 pg 5 Subwoofer Low Positive Negative 12V Power Remote Turn On Preamp Output Infrasonic Filter Input Voltage Pass Filter Slope Subwoofer Subwoofer Rear Frequency Input Voltage Ambience Mode Rear Speaker Front Frequency Input Voltage Front Speaker Connector Connector Signal Selector Defeat Switch Range Selector Selection Defeat Outputs Outputs Range Selector Range Selector Selector Outputs Range Selector Range Selector Outputs pg 5 pg 6 i 9 10 i 6 i 9 pg 11 pg 11 pg 8 pg 6 pg 17 pg 11 pg 8 pg 6 pg 11 l l aad I 12VDC Ground Remote Preamp Output Section Subwoofer Channel Control Section Subwoofer Output 250Wx1 Rear Filter Section Rear Input Section Rear Speaker Outputs 25Wx2 Front Filter Section Front Input Section Front Speaker Outputs Signal From Infrasonic Filter Input From Input Voltage D Sens Sub LP Filter Freq Range HighPass Fitter Input Voltage Input Sens L R Ambience Freq Range Filter Slope Input Voltage D Sens Sub LP F R Inputs Front Off 30Hz Ind oes Low High Off 12dB 24dB EXT x1 x10 Off 1208 24dB Low High Off On SS x1 x10 12dB 24dB Low High a A 050 o o IA F R Input Mode P krd 130 Fiter Mode JL AUDIO 500 5 O0 0 00 W q MONO OUTPUT ONLY E five channel system amplifier Y so E J 2eh ach Lee Right so 301 Off BP HP Remote Bass 4 Left Ch Right Ch rt LF Boost dB i n Sub Input Filter Freq
35. ency content If you are using the 500 5 in tri amp mode hese rear filter controls will determine the tweeter crossover frequency and slope We recommend that you use the sharper 24dB position for most tweeters 2 Freq Range Control When thrown to the right this switch multiplies the cutoff frequency selected by the rotary Filter Freq Hz control by a factor of 10 In the xl position the range of the rotary control is 50 500 Hz as marked In the x10 position the range of the rotary control is 500 Hz 5 kHz 5000 Hz 3 Filter Freq Hz The filter frequency markings surrounding this rotary control are for reference purposes and are generally accurate to within 1 3 octave or better If you would like to select the filter cutoff frequency with a higher level of precision consult Chart Al in Appendix A page 20 of this manual 8 JL AUDIO 500 5 Subwoofer Channel Filter The 500 5 s subwoofer channel filter located in he Subwoofer Channel Control Section employs an advanced state variable low pass active filter This feature is designed to attenuate frequencies above its filter frequency so that the system s subwoofers do not reproduce any audible midrange content The low pass filter in the 500 5 is fully variable between 40 Hz and 200 Hz via the Filter Freq control knob and features the ability o select between a moderate 12dB per octave or
36. for use in systems with a source unit or processor that provides discrete front rear and subwoofer outputs In this mode the subwoofer level and front to rear fading can be controlled from the front of the vehicle 16 JL AUDIO 500 5 JL AUDIO 500 5 17 STEREO TRI AMP MODE In this mode the bandpass feature on the front channels is activated configuring the 500 5 s crossover sections to true three way operation This allows the independent powering of tweeters midwoofers and subwoofer s in the system and gives extensive control over level matching and crossover parameters Left and right tweeter channels 25W x 2 3 4Q per channel high pass filtered Left and right midwoofer channels 100W x 2 1 5 4Q per channel bandpass filtered One mono subwoofer channel 250W x 1 5 4Q low pass filtered Input connection options for the Tri amp Stereo mode are as follows A Singl inputs of the 500 5 In this mode the user has no adjustabi vehicle B Two fer inputs of the 500 5 a source unit or e pair of inputs connected to the rear ity of subwoofer level from the front of the See diagram A below pairs of inputs connected to the rear and subwoo processor with front and rear pairs of outputs is required In this mode the user has the ability to fade or control the level of the subwoofer channel relative to the mid and high frequency channels See diagram B below L R Ambience Co
37. h frequency channels 18 JL AUDIO 500 5 the front midwoofer channels 50 500 Hz JL AUDIO 500 5 19 APPENDIX A Precise Frequency Selection Chart FILTER FREQ FRONT amp REAR CH FILTERS Detent Panel Actual Number Marking Freq CHART A I Full counter clockwise 58 Olarra Wer att abe 58 OZ iris SOO 5 nadie 58 OS xian ATERA 58 OF ete Ry Rent ROO fea 58 Oda aia 59 Deia oi 60 Orla tract td 6l OB ais or MOO ais 63 OD eek Ah Maat PLS a ie AEETI 65 A Seeina fase od 67 E nisin 3 69 De lsd AN odpt YA Menton ropa erat 74 ios Soe cana E 77 Dieticians e da 80 AR E 82 Di at ay 285 85 Dias nara nae 90 Dista rte ak cue terns 3 93 DO aa fe sass FOO daa ee EA 97 Dili a nates ater ons cree steal sf 02 DD ood de ds 07 E E AEE ATEA 13 DAS a Nine sleek neck seal 20 DO 2 dian tng LORG eTO TETIN 27 Donnin E 35 DS ap 43 DO ies EANTA 53 Dad A tyes bis ates tia 71 IO Are 82 Sl E A S 201 ino 200 2 00 00 223 BO in tee td Machida lcs 253 lis a talc lest Ai 289 A EN A 337 aii da 404 a ia A74 EN 00 nia asia 514 asa cod aa 525 Full clockwise 542 CHART A 2 FILTER FREQ SUBWOFER CH FILTER Panel Actual Marking Freq Full counter clockwise 42 Full clockwise 198 20 JL AUDIO 500 5 JL AUDIO 500 5 21 APPENDIX B Input Sensitivity Level Setting JL Audio amplifiers utilizing the Regulated Intelligent Power Supply R PS allow delivery of their rate
38. he amplifier is not necessary 9 Connect the remote turn on wire to the amplifier 10 Connect the RCA input cables to the amplifier 11 Connect the speaker wires to the amplifier JL AUDIO 500 5 12 Carefully review the amplifiers control settings to make sure that they are set according to the needs of the system 13 Install power wire fuse 50A for a single 500 5 and reconnect the negative battery post terminal 14 Turn on the source unit at a low level to double check that the amplifier is configured correctly Resist the temptation to crank it up until you have verified the control settings 15 Make necessary adjustments to the input sensitivity controls of the subwoofer channel and front and rear channel pairs to obtain the right overall output and the desired balance between their outputs See Appendix B page 22 for the recommended input sensitivity setting method 16 Enjoy the fruits of your labor with your favorite music POWER CONNECTIONS Before installing the amplifier disconnect the negative ground wire from the vehicle s battery This will prevent accidental damage to the system the vehicle and your body during installation 12VDC Ground Remote JL AUDIO 500 5 five channel system amplifier The 500 5 s 12VDC and Ground connections are designed to accept 4 AWG power wire 4 AWG is the only recommended power wire size for this amplifier If you are installing the 500
39. ied warranties are limited in duration to the period of the express warranty as provided herein beginning with the date of the original purchase at retail and no warranties whether express or implied shall apply to this product thereafter Some states do not allow limitations on implied warranties therefore these exclusions may not apply to you This warranty gives you specific which vary from state to state If you need service on your JL AUDIO product All warranty returns should be sent to JL AUDIO s Ampli legal rights and you may also have other rights fier Service Facility freight prepaid through an authorized JL AUDIO dealer and must be accompanied by proof of purchase a copy of the original sales receipt Direct returns from consumers or non authorized dealers wi JL AUDIO with a valid return authorization number Warranty expiration on products returned without proof be refused unless specifically authorized by of purchase will be determined from the manufacturing date code Coverage may be invalidated as this date is previous to purchase date Non defective items received will be returned freight collect Customer is res sending the product to JL AUDIO Freight damage on returns is ponsible for shipping charges and insurance in not covered under warranty For Service Information in the U S A please call JL Audio customer service 954 443 1100 during normal business hours 9 00 AM 5 30 PM Easter
40. in each input section of the amplifier Be aware that each input section s Input Voltage switch will have to be configured regardless of how many inputs are actually feeding the amplifier The Low position on each Input Voltage switch selects an input sensitivity range between 200mV and 2V This means that the Input Sensitivity rotary control will operate within that window If you are using an aftermarket source unit with conventional preamp level outputs this is most likely the position that you will use The High position on each Input Voltage switch selects an input sensitivity range between 800mV and 8V This is useful for certain high output preamp level signals as well as speaker level output from source units and small amplifiers To use speaker level sources splice the speaker output wires of the source unit or small amplifier onto a pair of RCA plugs EMPORTANT The output of the amplifier will decrease for a given input voltage when the Input Range switch is placed in the High position Conversely the output will be higher with the switch in the Low position While this may sound counter intuitive it is consistent with the descriptions above Input Sensitivity Adjustment Located next to the Input Voltage switch in each input section is a rotary control labeled Input Sens Once the appropriate Input Voltage range has been selected this control
41. ise 4 Set the source unit volume to 3 4 of full volume If either set of channels is being driven by a source unit s dedicated subwoofer output also adjust the source unit s subwoofer level control to 3 4 of maximum output This will allow for reasonable gain overlap with moderate clipping at full volume 5 Using the chart below determine the target voltage for input sensitivity adjustment according to the nominal impedance of the speaker system connected to each set of outputs 6 Verify that you have disconnected the speakers before proceeding Play a track with an appropriate sine wave within the frequency range to be amplified by the set of channels being adjusted at 3 4 source unit volume FRONT CH REAR CH 20 0V 20 0V 20 0V 17 3V 142 V not recommended not recommended not recommended BW not recommended not recommended not recommended Bridged 20 0 V 174V not recommended not recommended 22 JL AUDIO 500 5 7 Connect the AC voltmeter to the Speaker Outputs or Subwoofer Output connectors of the channel set that you are adjusting For the stereo channels it is only necessary to measure one channel If bridged make sure you test the voltage at the correct connectors L and R 8 Increase the Input Sens control until the target voltage is delivered for that set of channels If excessive voltage is read on either set of channels with the control at mini
42. iving rear component speakers in high pass mode 25W x 2 2 As a full system amplifier in a tri amplified system delivering band passed signals through its front channels to mid bass mid range speakers and high passed signals through its front channels to tweeters The 500 5 s flexible input and crossover sections permit operation with a wide variety of source units and system configurations The 500 5 can operate with a single pair of stereo inputs or with separate inputs for front and rear channel pairs if the source unit is equipped with front and rear outputs The subwoofer channel can be driven with a discrete signal from a source unit s subwoofer output or can receive its signal from the front and or rear channel inputs The 500 5 s preamp output can send pass through signals from the front inputs only the subwoofer inputs only OR a sum of the front and rear input signals This allows the connection of additional subwoofer amplifier s or full range amplifiers TYPICAL INSTALLATION SEQUENCE The following represents the sequence for a typical amplifier installation using an aftermarket source unit Additional steps and different procedures may be required in some applications If you have any questions please contact your authorized JL Audio dealer for assistance 1 Disconnect the negative battery post connection and secure the disconnected cable to prevent accidental re connection during installation This step is no
43. lifier and on the amplifier packaging Serial Number amplifier with the outputs of a second amplifier including an identical one Cooling Efficiency Considerations Your JL Audio amplifier employs an advanced type of heat management called RealSink This Your amplifier needs to be inst well ventilated environment and i alled in a dry n a manner which does not interfere with your vehicle s safety equipment air bags seat belt syst ems ABS brake feature takes advantage of convection and radiation effects to remove heat from the amplifier circuitry For optimum cooling performance the vertical heat sinks located at the back of the amplifier should be exposed to as large a volume of air as possible Enclosing the amplifier in a small poorly ventilated chamber can lead to excessive heat build up and degraded performance If an installation calls for an enclosure around the amplifier we recommend that ventilated with the aid of a fan In normal applications this enclosure be fan cooling is not necessary but you still need to follow some basic guidelines e Amplifier mounted vertically with heat sink fins pointing up Optimum e Amplifier mounted horizontally right side up Good e Amplifier mounted horizontally but upside down Fair not recommended if there is less than inch 25 e Ampli cm clearance above the amplifier heat sink
44. ly deriving a center channel signal but is not going to give you a defined left or right channel If you are looking to reproduce a single channel s signal you must split the mono signal with a Y adaptor and connect it to both left and right RCA inputs for the bridged channel pair STATUS INDICATOR LIGHTS PROTECTION CIRCUITRY There are three status indicator lights on the top of the amplifier These are as follows 1 Power Green lights to indicate that the amplifier is turned on and operating normally 2 Thermal Red lights to indicate that the amplifier has exceeded its safe operating temperature putting the amplifier into a self protection mode which reduces the power output of the amplifier The red light will shut off and the amplifier will return to normal full power operating mode if the heat sink temperature drops back to a safe level 3 Low Q Amber lights to indicate that the impedance of the speaker load connected to the amplifier is lower than the optimum load impedance range for the amplifier When this light is on a protection circuit engages and reduces the power output of the front or subwoofer channel depending on which channel is experiencing the problem The amber indicator will also light when a short circuit is detected in the speaker wiring this can be a short between the positive and negative speaker wires or between either speaker wire and the vehicle chassis
45. mum full counterclockwise switch the appropriate Input Voltage switch to High and re adjust 9 Once you have adjusted each set of channels to its maximum unclipped output level reconnect the speaker s The Input Sens controls can now be adjusted downward if any channels require attenuation to achieve the desired system balance By iMPORTANT Do not increase any Input Sens setting in the system beyond the maximum level established during this procedure Doing so will result in audible distortion and possible speaker damage It will be necessary to re adjust the Input Sens for the affected channels if any equalizer boost is activated after setting the Input Sens with this procedure This applies to any EQ boost circuit including the amplifiers Bass EQ and source unit tone controls or EQ circuits EQ cuts will not require re adjustment JL AUDIO 500 5 23 APPENDIX C Master Slave Configurations With the flexible on board crossovers and processing incorporated into the 500 5 it is possible to connect additional JL Audio 250 1 amplifiers in a Master Slave configuration with each amplifier driving its own speaker system but controlled by the processing and filtering of the 500 5 s subwoofer section This is very useful if additional subwoofer power is desired in a system To create a Master Slave configuration configure the 500 5 s subwoofer section as you would
46. n Time JL Audio Inc 10369 North Commerce Pkwy Miramar FL 33025 do not send product for repair to this address International Warranties Products purchased outside the United States of America are covered only by that country s distributor and not by JL Audio Inc Absolute Symmetry Class AB Amplifier Circuit is covered by U S Patent 6 294 959 and is pending in the countries listed below Austria Belgium Brazil Canada China France Germany Indonesia Italy Japan Republic of Korea Mexico Netherlands Norway Russian Federation Singapore Sweden Switzerland United Kingdom and all other PCT countries JL5005MAN CH 10 2002
47. n be controlled with the source unit fader without affecting the level of the subwoofer channel JL AUDIO 500 5 14 Note This configuration can also be set up so that the subwoofer level tracks with the front channel level and only the rear channels are faded To configure the system in this manner go to the Subwoofer Channel Control Section Input From selector switch and select Front instead of F R JL AUDIO 500 5 15 im IMPORTANT Some source units and processors with subwoofer preamp outputs provid le low pass filtering on these outputs while others have a full range output Consult your source owner s manual to determine the subwoofer preamp output e If your sub preamp output is fu unit or processor properties of the l range engage the 500 5 s sub low pass filter by selecting the 12dB or 24dB position on he Sub LP Filter switch This configuration is illustrated in the setup diagram e If your sub preamp output has a choice between full range and low pass modes select the full range mode and use the 500 5 s likely more sophisticated sub low pass filter by selecting the 12dB or 24dB position on the Sub LP Filter switch This configuration is illustrated in the setup diagram e If the source unit processor sub preamp output has a low pass filter which is not defeatable you can turn the 500 5 s low pass filter off by going to the Subw
48. normally do to drive one subwoofer system then do the following to connect additional slave amplifiers 1 In the Preamp Output Section of the 500 5 select the Sub LP position on the Signal From switch This will send a parallel mono summed signal from the 500 5 s Sub LP Filter section to its preamp outputs 2 Connect an RCA cable from the 500 5 s preamp outputs to the main input of the first Slave 250 1 amplifier Set the Slave amplifier s Amp LP Filter to the Off position This will defeat the LP filter and the bass processing of this Slave Amplifier 3 The input sensitivity of the two amplifiers needs to be adjusted independently Set the subwoofer channel of the 500 5 and the slave 250 1 amplifier to the same target voltage using the procedure outlined in Appendix B page 22 Do not increase the Input Sens setting for any amplifier channel in the system beyond the maximum level established during the procedure outlined in Appendix B page 22 Doing so will result in audible distortion and possible speaker damage The Master amplifier s bass processing features are MASTER active and affect all three amplifiers equally 4 If you would like to run a third amplifier in Slave configuration select the Full Range position on the Output Mode switch of the first Slave amp Then connect an RCA cable from the first Slave amplifier s preamp outpu
49. ntrol This switch located in the Rear Filter Section should be set to the Off position when operating the amplifier in Tri Amp Mode Select 12dB or Select 12dB or 24dB octave filter 24dB octave filter slope for slope for rear midwoofer Adjusts level of Select F R Adjusts level of channels Adjusts level of rear channel high pass front midwoofer Input Mode sub channel high pass tweeter channels cutoff high pass channels For preamp output 30 Hz Infrasonic Select Low for Select 12dB or Select x10 Select Low for Select Low for to slave subwoofer For full range Filter for sub preamp level inputs 24dB octave filter range for rear preamp level inputs Select xl range preamp level inputs amplifier s select preamp output channel or High for slope for sub Amp Output to filter freq or High for Select Off Amp Output for front filter freq or High for Amp Output to Sub LP select F R On or Off speaker level inputs channel low pass Subwoofers 500 5000 Hz speaker level inputs Position Only to Tweeters 50 500 Hz speaker level inputs Midwoofers 12VDC
50. of sub channel Select 12dB or 24dB octave filter Select Low for preamp level inputs preamp output channel or High for slope for sub Amp Output to select F R On or Off speaker level inputs channel low pass Subwoofers 30 Hz Infrasonic Filter for sub For preamp output to slave subwoofer amplifier s select Sub LP For full range Select 12dB or Select 12dB or 24dB octave filter 24dB octave filter slope for rear slope for front channels Adjusts level of channels Adjusts level of high pass rear channels high pass front channels Select xI Select Low for Select Low for range for rear preamp level inputs Amp Output to Select xl range preamp level inputs Amp Output to filter freq or High for Select Ambience Rear Satellite for front filter freq or High for Front Satellite 50 500 Hz speaker level inputs Mode Off or On Speakers 50 500 Hz speaker level inputs Speakers Front Filter Section Front Input Section Front Speaker Outputs 12VDC Ground Remote Preamp Output Section Subwoofer Channel Control Seaton Subwoofer Output 250Wx1 Roar Filter Seqtion Rear Input Section Rear Speaker Oxtputs 25Wxe2 Signal From Infrasonic Filter Input From Input Voltage Input Sens Sub LP Filter Freq
51. ol in the Rear Filter Section 50Wx1 Rear Filter Section x Freq Range HighPass Filter Input Volt x1 x10 Oft 12dB 24d8 Low Hic poses O a Front Ch 60 200 Bandpass a filter when so 500 Filter Freq Hz 2 1 High Pass Filter Control This switch allows you to defeat the Rear Channel Filter or select from two different filter slopes Off Defeats the filter completely allowing the full range of frequencies present at the inputs to feed that pair of channels This is useful for systems utilizing outboard crossovers or requiring full range reproduction from these channels 12dB Configures the filter for that pair of channels to attenuate frequencies below the selected filter frequency at a rate of 12dB per octave Butterworth alignment 24dB Configures the filter for that pair of channels to attenuate frequencies below the selected filter frequency at a rate of 24dB per octave Linkwitz Riley alignment Depending on the speaker system and the vehicle different filter slopes may be required to produce a smooth transition between the speakers in the system Experiment to find the slope which best matches the acoustic requirements of your system The sharper 24dB setting will do a better job of protecting small speakers with limited power handling The shallower 12dB octave setting allows the rear speakers to reproduce more low frequ
52. onnected to the rear inputs of the 500 5 In this mode the user has no adjustability of subwoofer level from the front of the vehicle Select 12dB or Select 12dB or 24dB octave filter 24dB octave filter slope for slope for rear midwoofer Adjusts level of Select Ind Adjusts level of channels Adjusts level of rear channel high pass front midwoofer Input Mode sub channel high pass tweeter channels cutoff high pass channels For preamp output 30 Hz Infrasonic Select Low for Select 12dB or Select x10 Select Low for Select Low for to slave subwoofer For full range Filter for sub preamp level inputs 24dB octave filter range for rear preamp level inputs Select xl range preamp level inputs amplifier s select preamp output channel or High for slope for sub Amp Output to filter freq or High for Select Off Amp Output to for front filter freq or High for Amp Output to Sub LP select F R On or Off speaker level inputs channel low pass Subwoofers 500 5000 Hz speaker level inputs Position Only Tweeters 50 500 Hz speaker level inputs Midwoofers 12VDC Ground Remote Preamp Output Section Subwoofer Channel Control Se tion Subwoofer Output 250W x1 Rear Filter Section Rear Input Section Rear Speaker Oytputs 25Wx2 Front Fiter Section Front Input Section Front peaje Outputs Signal From Infrasonic Fiter Input From Input Voltage Input Sens Sub LP Filter Freq Range HighPass Filter
53. ono summed signal that is feeding the 500 5 s subwoofer channel when the Sub LP mode is engaged including all the low pass filtering LF Boost and Infrasonic Filter processing that is selected This mode is useful for feeding an additional slave subwoofer amplifier the JL Audio 250 1 matches the 500 5 s subwoofer channel perfectly For more information on adding additional subwoofer amplifiers in master slave mode please refer to Appendix C on page 24 2 F R Inputs Front Rear This is a pass through mode for the preamp output delivering a sum of the signals being fed to the Front Input Section and Rear Input Section of the amplifier If the input signal is full range the preamp output JL AUDIO 500 5 9 will be full range This signal is not affected by the LF Boost or Infrasonic Filter processing selected for the amplifier When the 500 5 is being used to drive front rear and subwoofer speaker systems this preamp output mode will deliver a summed front rear signal to an additional subwoofer amplifier while permitting fading of the front and rear speaker systems from the source unit 3 Front This is a pass through mode for the preamp output delivering the same signal that is being fed to the Front Input Section of the amplifier If the input signal is full range the preamp output will be full range This signal is not affected by the
54. oofer Channel Control Section position Depending on the crossover point and slope of the source unit processor s filter you may wish to engage the 500 5 s sub low pass filter to fine tune the sub bass response e If you are using a high quality outboard active crossover you can defeat all of the 500 5 s filters by selecting the Off position on the Sub LP Filter switch Control Section the High Pass Filter switch in the Subwoofer Channel in the Rear Fi iter Section and the Filter Mode switch in the Front Filter Section Sub LP Filter switch and selecting the Off Select 12dB or L R Ambience Control This switch located in the Rear Filter Section performs a very useful function when operating the amplifier in bi amp mode By switching this circuit to the On position all signal common to both left and right channels is removed from the signal s of the 500 5 When the channels will only reproduce feeding the rear channe circuit is On the rear the extreme left and right information in the istic ambient effect from the rear channels without detracting from the imaging recording creating a real of the front speaker system Experiment with this switch to determine if this feature enhances the sound of your system Select 12dB or
55. plifier 0000 MONO OUTPUT ONLY Off On Connect 250 1 Slave A Preamp Output to 250 1 Slave B Input This Slave amplifier s bass processing features are inactive but the Full Range pass through feature of its Preamp Output feeds the input of the next Slave amplifier The last Slave amplifier s bass processing features are inactive The Amp LP Filter and Preamp Output are also inactive 24 JL AUDIO 500 5 JL AUDIO 500 5 25 APPENDIX D TROUBLE SHOOTING MY AMPLIFIER DOESN T TURN ON Check to make sure there is 12V at the Remote connection of the amplifier In some cases the turn on lead from the source unit is insufficient to turn on multiple devices and the use of a relay is required To test for this problem jump the 12V wire to the Remote terminal to see if the amplifier turns on If this does not work proceed to the next step Check the fuse not just visually but with a continuity meter It is possible for a fuse to have poor internal connections that cannot be found by visual inspection It is best to take the fuse out of the holder for testing If no problem is found with the fuse inspect the fuse holder 1 GET A DISTORTED ATTENUATED SOUND COMING OUT OF THE SPEAKER S Check the speaker wires for a possible short either between the positive and negative or between a speaker lead and the vehicle s chassis ground If a short
56. s fier mounted vertically with heat sink fins pointing laterally Fair e Amplifier mounted vertically with heat sink fins pointing down Poor not recommended Rear High Pass systems etc You should also take the time to securely mount the amplifier using the supplied screws so that tt does not come loose in the event o the vehicle 20 Ibs PH will hurt you of a collision or a sudden jolt of aluminum traveling at 60 M Stupid Mistakes to Avoid e Check before drilling any hol les in your vehicle to make sure that you will not be drilling through a gas tank brake line wiring harness or other vital vehicle system Do not run system wiring outside or underneath the vehicle This is an extremely dangerous practice which can result in severe damage to your vehicle and person Protect all system wires from sharp metal edges and wear by carefully routing them tying them down and using grommets and loom where appropriate e Do not mount the amplifier in the engine compartment under the vehicle on the roof or in any other area that will expose the amplifier circuitry to the elements Subwoofer Input Input Sensitivity Filter Slope Front Filter Input Sensitivity Chassis Ground Mode Selector Control Selection Defeat Input Sensitivity Control Slope Selection Control Conn
57. satellite channels deliver channel One with front and rear pairs of outputs is required In can be controlled with the source unit fader processor fader adjusts the relative level of the without affecting the level of the subwoofer channel subwoofer channel vs all four satellite channels as See diagram B below a whole The relative level of the front and rear Note This configuration can also be set up so channels is pre set with the amplifier input that the subwoofer level tracks with the front sensitivity controls and cannot be adjusted from he source unit See diagram C on page 16 D Three pairs of inputs connected to the rear front and subwoofer inputs of the 500 5 This mode is applicable for use in systems with a source unit or channel level To configure the system in this manner go to the Subwoofer Channel Control Section Input From selector switch and select Front instead of F R C Two pairs of inputs connected to the rear processor that provides discrete front rear and 250W x 15 40 this mode the user has front to rear fading and subwoofer inputs of the 500 5 a source unit subwoofer outputs In this mode the subwoofer capability with non fading sub bass level This means or processor with front and rear
58. speaker outputs This output level can vary greatly between amplifiers but it should not be in the millivolt range with the source unit at half volume If you are reading sufficient voltage check your speaker connections as explained above MY AMPLIFIER S OUTPUT FLUCTUATES WHEN TAP ON IT OR HIT A BUMP Check the connections to the amplifier Make sure that the insulation for all wires has been stripped back far enough to allow a good contact area inside the amplifier terminal Check the RCA connectors to ensure that both the center pin and the outer shield are making good contact with the input jacks on the amplifier HOW DO PROPERLY SET THE INPUT SENSITIVITY ON MY AMPLIFIER Please refer to Appendix B page 22 to set the input sensitivity for maximum low distortion output JL AUDIO 500 5 27 APPENDIX E 500 5 Specifications GENERAL SPECIFICATIONS Recommended Fuse Value 50A Recommended Fuse Type AGU or MaxiFuse INPUT SECTIONS No of Inputs Three Stereo Pairs Front Rear Subwoofer Input Type Differential balanced with RCA jack inputs Input Range Switchable from 200mV 2V RMS to 800mV 8V RMS FRONT CHANNELS Amplifier Topology Class AB with patented Absolute Symmetry dual N Channel MOSFET output design Power Supply Independent pulse width modulation regulated switching power supply with multistage impedance optimizing circuitry Rated Power Stereo 100W RMS x 2
59. t optional 2 Run power wire minimum 4 AWG from the battery location to the amplifier mounting location taking care to route it in such a way that it will not be damaged and will not interfere with vehicle operation Use 2 AWG or 1 0 AWG power wire if additional amplifiers are being installed with the 500 5 3 Connect power wire to the positive battery post Fuse the wire with an appropriate fuse block and connectors within 18 inches 45 cm wire length of the positive battery post This fuse is essential to protect the vehicle Do not install the fuse until the power wire has been connected to the amplifier 4 Run signal cables RCA cables and remote turn on wire from the source unit to the amplifier mounting location There are several ways to provide input to the 500 5 Please read the rest of this manual carefully to choose the best one for your system 5 Run speaker wire from the speaker systems to the amplifier mounting location 6 Find a good solid metal grounding point close to the amplifier and connect the negative power wire to it using appropriate hardware Use 4 AWG power wire no longer than 36 inches 90 cm from the amplifier to the ground connection point In some vehicles tt may be necessary to upgrade the battery ground wire See page 5 for important notice 7 Securely mount the amplifier using the supplied screws 8 Connect the positive and negative power wires to the amplifier A fuse near t
60. t signal using an AC voltmeter to measure the voltage from the source unit while an appropriate test tone is played through the source unit disconnect the RCA cables from the amplifier prior to this test The frequency used should be in the range that is to amplified by the channels being tested example 50 Hz for a sub bass amplifier channel and kHz for a full range amplifier channel A steady voltage should be present at the output of the RCA cables If you are receiving a sufficient voltage between 0 2 and 8 0 volts check to ensure that the speaker wires are making a good connection with the metal inside the amplifier The connectors are designed to accept up to an 8 AWG wire If you are using significantly smaller wire 14 AWG or smaller you may have difficulty making an adequate connection In this case you may find it necessary to fold the wire over once or twice so as to make a solid connection Make sure to strip the wire to allow for a sufficient connection with the input or output of the amplifier Check the output of the amplifier Using the procedure explained in the previous check item after plugging the RCA cables back into the amplifier test for output at the speaker outputs of the amplifier Unless you enjoy test tones at high levels it is a good idea to remove the speaker wires from the amplifier while doing this Turn the volume up approximately half way 5 volts or more should be measured at the
61. tave Linkwitz Riley alignment JL AUDIO 500 5 7 Depending on the speaker system and the vehicle different filter slopes may be required to produce a smooth transition between the sound of different speakers in the system Experiment to find the slope which best matches the acoustic requirements of the system The sharper 24dB wn etting will do a better job of protecting small speakers with limited power handling The shallower 12dB octave setting allows the front speakers to reproduce more content below the cutoff frequency 3 Freq Range Control When thrown to the right this switch multiplies the cutoff frequency selected by the rotary Filter Freq Hz control by a factor of 10 In the xl position the range of the rotary control is 50 500 Hz as marked In the x10 position the range of the rotary control i 500 Hz 5 kHz 5000 Hz 4 Filter Freq Hz The filter frequency markings surrounding this rotary control are for G reference purposes and are generally accurate to within 1 3 octave or better If you would like to select the filter cutoff frequency with a higher level of precision consult the charts in Appendix A page 20 of this manual Rear Filter Section The rear channels of the 500 5 can be operated through the amplifier s built in rear high pass filter This attenuates frequencies below the one selected by the Filter Freq contr
62. ts to the second Slave amplifier As you did with the first Slave amp set the second Slave amplifier s Amp LP Filter to the Off position Then calibrate the third amplifier s Input Range and Input Sens controls in the same manner as you did for the second amplifier Additional amplifiers may be added to this Master Slave configuration following the same procedure as in step 4 Once you match the input sensitivities of all the amplifiers you can use the Master amplifier s Sub LP Filter Infrasonic Filter and LF Boost features to control the Slave amplifier s The diagram below shows a Master Slave configuration with one Master 500 5 top amplifier and two Slave 250 1 amplifiers Switches and controls that are defeated in the Slave amplifiers are printed in gray NOTE These settings are intended as a baseline for tuning this system Depending on the vehicle personal taste and the audio components specific to your system some variation in the Subwoofer Channel Control Section Filter Sections and Input Sections may be necessary for optimum performance 12VDC Ground Remote Preamp Output Section Subwoofer Channel Control Section Subwoofer Output 250Wx1 Rear Filter Section Rear Input Section Rear Speaker Outputs 25Wx2 Front Filter Section Front Input Section Front Speaker Outputs Signal From Infrasonic
63. ut Voltage Input Sens Sub LP Filter Freq Range HighPass Filter Input Voltage Input Sens L R Ambience Freq Range Filter Slope Input Voltage Input Sens EE mmm ma uu food T mm ma um foo m forero Sub LP F R Inputs Front Off 30Hz Ind F R Front Low High Off 12dB 24dB x1 x10 Dff 12dB 24dB Low High Off On x1 x10 124B 24dB Low High f N f N 010 ao F R Input Mode oe Filter Mode a i IT 0000 A 99 00 JL AUDIO 500 5 Y MONO OUTPUT ONLY BEME i Lefs five channel system amplifier 40 200 so 500 OM BP HP Remote Bass Left Fight Left Ch Right Ch Port LF Boost dB Independent Sub Input Fitter Freq Hz Filter Freq Hz Left Ch Right Ch Bridged HP Filter Freq Hz Left Ch Right Ch 7 4 A f T T T T T To input of Control LF bass Not Used Select low pass Select high pass Input from Select 2ch Select high pass Select HP Not Used additional boost level with filter freq for filter freq for rear source unit or Input Mode filter freq for High Pass amplifier if used on board knob sub channel channels 50 500 Hz processor rear channels Mode or optional 40 200 Hz 50 500 Hz RBC 1 controller A Single pair of inputs connected to the rear inputs of the 500 5 In this mode the user has no fading capability between the front and rear channels and no adjustability of subwoofer level from the front of the vehicle Select F R or Front Input Mode Adjusts level

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