JL Audio J2360.2 User's Manual
Contents
1. Any wires run through metal barriers such as firewalls must be protected with a high quality insulating grommet to prevent damage to the insulation of the wire Failure to do so may result in a dangerous short circuit I IMPORTANT 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 to4 AWG when installing amplifier systems with main fuse ratings above 60A FUSE REOUIREMENTS While the J2 360 2 has two 20A ATC fuses on its power connection panel these do nothing to protect the vehicle from a dangerous short circuit in the power wire They only protect the amplifier It is absolutely vital that the main power lead 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 eguipment being run from that power wire If only the J2 360 2 is being run from that power wire we recommend a 40A fuse be used AFS AGU or MAXI type fuses are recommended rm FUSES 20A 20A igi JL Audio J 360 2 TURN ON LEAD The J2 360 2 is turned on and off using a conventional 12V remote turn on lead typically controlled by the source unit s remote turn on output Ground Remote 12VDC The amplifier will turn on when 12V is present at its2. Remote input and turn off when 12V is switched off If a source unit does not have a dedicated remote turn on output the amplifier s turn on lead can be connected to 12V via a switch that derives power from an ignition switched circuit 18 AWG wire is more than adequate for the remote turn on connection To connect the remote turn on wire to the amplifier strip 1 2 inch 12 mm of insulation from the wire and insert it into the Remote receptacle on the power connector Tighten the connector down using a Phillips screwdriver INPUT SECTIONS The J2 360 2 s has one pair of stereo inputs The input section input section offers two input connection methods one for high level speaker level signals and one for low level preamp level signals 1 Low Level Inputs A standard left right pair of RCA type jacks in the Amplifier Inputs section is used for preamp level low level signal input on the J2 360 2 This is the preferred connection method whenever available p Amplifier ts Inputs LEFT RIGHT 2 High Level Inputs If your system does not offer a preamp level signal option you can connect speaker level signals directly to the High Level Inputs connectors using the supplied mating connectors and wire harnesses Simply splice the appropriate left right and positive negative wires to the included harnesses and plug the harness into the High Level Inputs connectors on the amplifier The J2 36
3. Defeatable Preamp Output 2 Channel pass through with unity gain RCA type jacks Dimensions LxWxH 12 80 x 9 60 x 2 15 325 mm x 244 mm x 55 mm Due to ongoing product development all specifications are subject to change without notice APPENDIX C TROUBLESHOOTING How do I properly set the input sensitivity on my amplifier Please refer to Appeaset the input sensitivity for maximum low distortion output My amplifier doesn t turn on 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 Check the integrity of the connections made to each of the 12VDC Ground and Remote terminals Ensure that no wire insulation is pinched by the terminal set screw and that each connection is tight 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 12VDC wire to the Remote terminal to see if the amplifier turns on If this does not work proceed to the next step My amplifier s output fluctuates when I tap on it or hita bump Check the connections to the amplifier
4. Make sure that the insulation for all wires has been stripped back far enough to allow a good contact area inside the terminal block Check the input connectors to ensure that they all are making good contact with the input jacks on the amplifier 14 JL Audio My amplifier turns on but there is no output Check the input 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 input cables from the amplifier prior to this test The frequency used should be in the range that is to be amplified by the amplifier example 50 Hz for a sub bass application or 1 kHz for a full range high pass application A steady sufficient voltage between 0 2 and 8 0 volts should be present at the output of the signal cables Check the output of the amplifier Using the procedure explained in the previous check item after plugging the input 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 5V or more should be measured at the 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 connecti
5. PREAMP OUTPUTS The J2 360 2 incorporates a pass through preamp output section so that additional amplifiers can be easily added to the system This pass through pre amp output delivers the same signals that are fed into the amplifier s inputs Preamp Ar Outputs d LEFT RIGHT The preamp output signal is not affected by the Bass Boost processing selected for the amplifier or by any crossover filter selected if the input signal is full range the preamp output will be full range Note The signal level of the Preamp Output is always line level low voltage SPEAKER OUTPUTS The J2 360 2 s speaker outputs are designed to accept 16 AWG 8 AWG wire LEFT CHANNEL RIGHT CHANNEL o 9 I et Bridged 2 2 J2 360 2 is designed to deliver power into speaker loads egual to or greater than 2 ohms per channel when using a stereo configuration and speaker loads equal to or greater than 4 ohms when using a bridged configuration Ea IMPORTANT Speaker loads below 2 ohms nominal per channel are not recommended and may cause the amplifier to initiate a protection mode 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 J2 360 2 has b
6. amp Right Filter Mode Bass Boost Input Jack Preamp Input Jacks Selector Control pg 6 7 pg 6 pg 8 pg 9 rotet MOBILE SUDO E di Preamp Amplifier Outputs Inputs LEFT LEFT Power High Level Inputs a HP Off LP Filter Mode QQ OQ RIGHT RIGHT O Protect Off 9d48 Bass Boost 50 500 Filter Frequency Hz min max Input Sens JL Audio J 360 2 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 Cooling Efficiency Considerations The outer shell of your JL Audio amplifier is designed to remove heat from the amplifier circuitry For optimum cooling performance this outer shell 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 this enclosure be ventilated with the aid of a fan In normal applications fan cooling is not necessary Speaker Outputs pg 10 LEFT CHANNEL RIGHT CHANNEL o o Bridged J 360 2 Ea IMPORTANT Mounting the amplifier upside down is strongly discouraged If mounting the amplifier under a seat make sure there is at
7. quieter for a given input voltage min max Input Sens To properly set the amplifier for maximum clean output please refer to Appendix A page 12 in this manual After using this procedure you can then adjust any or all Input Sens levels downward if this is required to achieve the desired system balance K IMPORTANT Do not increase any Input Sens setting for any channel s of any amplifier in the system beyond the maximum level established during the procedure outlined in Appendix A page 12 Doing so will result in audible distortion and possible speaker damage J2360 2 FILTER CONTROLS The active filter built into the J2 360 2 can be used to eliminate potentially harmful and or undesired freguencies from making their way through the amplifier section to the speaker s This serves to improve tonal balance and to avoid distortion and possible speaker failure Correct use of this filter can substantially increase the longevity and fidelity of your audio system HP Off LP Filter Mode 50 500 Filter Frequency Hz 1 Filter Mode Control The J2 360 2 employs a 12dB per octave filter This filter can be configured into one of two filter types or defeated completely by way of the three position Filter Mode switch HP High Pass Configures the filter to attenuate frequencies below the selected filter frequency at a rate of 12dB per octave This is useful for connection o
8. 13 TYPICAL INSTALLATION SEQUENCE The following represents the sequence for a typical amplifier installation using an aftermarket source unit or OEM Interface product 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 not optional 2 Run 4 AWG power wire 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 larger power wire and a power distribution block if additional amplifiers are being installed with the J2 360 2 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 securely connected to the amplifier 4 Run signal cables and remote turn on wire from the source unit to the final amplifier mounting location 5 Run speaker cables 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
9. least 1 inch 2 5 cm of space above the amplifier s outer shell to permit proper cooling Safety Considerations Your amplifier needs to be installed in a dry well ventilated environment and in a manner which does not interfere with your vehicle s safety equipment air bags seat belt systems ABS brake systems etc You should also take the time to securely mount the amplifier so that it does not come loose in the event of a collision or a sudden jolt to the vehicle Stupid Mistakes to Avoid Check before drilling any holes 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 e Protect all system wires from sharp metal edges and wear by carefully routing them tying them down and using grommets and loom where appropriate 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 J2360 2 PRODUCT DESCRIPTION The JL Audio J2 360 2 is a two channel full range audio amplifier utilizing Class A B technology The J2 360 2 can be operated with a wide variety of source units and system configurations For detailed specifications please refer to Appendix B page
10. 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 specifically 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 Ifyou have any questions about the installation or setup of the amplifier not covered in this manual please contact your dealer or technical support JL Audio Technical Support 954 443 1100 9 00 AM 5 30 PM Eastern Time Zone Monday Friday J2360 2 11 APPENDIX A Input Sensitivity Level Setting Following the directions below will allow the installer to adjust the input sensitivity of each amplifier channel pair simply and easily in just a few minutes using equipment which is commonly available in installation bays Necessary Eguipment 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 1 kHz for a midrange application Do not use attenuated test tones 10 dB 20 dB etc The Nine Step Procedure 1 Disconnect the speaker s from the amplifier s speaker output connectors 2 Turn off all processing bass treble loudness EQ etc on the source unit processors if used
11. the system the vehicle and your body during installation Ground Remote 12VDC The J2 360 2 s 12VDC and Ground connections are designed to accept 4 AWG power wire 4 AWG is a minimum power wire size for this amplifier If you are installing the J2 360 2 with other amplifiers and wish to use a single main power wire use 2 AWG or larger main power wire depending on the overall current demands of all the amplifiers in the system This 2 AWG or larger power wire should terminate into a distribution block mounted as close to the amplifiers as possible and should connect to the J2 360 2 with 4 AWG power wire Note Smaller AWG numbers mean bigger wire and vice versa 1 0 AWG is the largest 2 AWG is smaller then 4 AWG then 8 AWG etc To connect the power and ground wires to the amplifier strip 1 2 inch 12 mm of insulation from each wire and insert the bare wire into the the appropriate terminal block positions on the J2 360 2 Use a Phillips screwdriver to secure the wire via the screw on the top of each terminal The GROUND connection should be made using 4 AWG wire 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
12. 0 2 will attenuate the high level signals to make them compatible with its input stages High Level Inputs JL Audio Eq IMPORTANT Make sure you observe correct polarity in making the High Level Input connections Failure to do so will reduce bass and affect stereo imaging The connections for the High Level Inputs plug wires are as follows from left to right on the plug Channels 1 amp 2 FRONT White Left Positive White Black Left Negative Black Common Ground rarely used Gray Right Positive Gray Black Right Negative Channels 3 amp 4 REAR or SUB Green Left Positive Green Black Left Negative Black Common Ground rarely used Purple Right Positive Purple Black Right Negative The only time you will use the Common Ground connections is with some older pre 1980 s factory systems or head units that ground their speakers to chassis ground To use these connections ground the black wires on the plugs to chassis ground and only connect the Left and Right Positive plug wires to the factory radio outputs INPUT SENSITIVITY CONTROLS The control labeled Input Sens can be used to match the source unit s output voltage to the input stage the amplifier for maximum clean output Rotating the control clockwise will result in higher sensitivity louder for a given input voltage Rotating the control counter clockwise will result in lower sensitivity
13. OWNER S MANUAL J0360 2 360W 2 Channel Full Range Amplifier 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 vehicle For maximum performance 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 amplifier s operation please contact your authorized JL Audio dealer for assistance If you need further assistance please call our Technical Support Department at 954 443 1100 during business hours 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 irreparable hearing loss This and all other high power amplifiers are capable of producing such high sound pressure levels when
14. allation 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 implied 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 legal rights and you may also have other rights 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 Amplifier 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 will be refused unless specifically authorized by JL Audio with a valid return authorization number Warranty expiration on products returned without proof of purchase will be determined from the manufacturing date code Coverage may be invalidated as this date is previous to purchas
15. and amplifier Set fader control to center position and subwoofer level control to 3 4 of maximum If connected set the amplifier s Remote Bass Control at maximum full clockwise 3 Turn the Input Sens control all the way down 4 Set the source unit volume to 3 4 of full volume This will allow for reasonable gain overlap with moderate clipping at full volume 5 Using the chart on this page determine the target voltage for input sensitivity adjustment according to the nominal impedance of the speaker system connected to the amplifier 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 at 3 4 source unit volume 7 Connect the AC voltmeter to the speaker output connectors of the amplifier Make sure you test the voltage at the correct connectors and 8 Increase the Input Sens control until the target voltage is observed with the voltmeter 9 Once you have adjusted the amplifier to its maximum low distortion output level reconnect the speaker s The Input Sens controls can now be adjusted downward if the amplifier requires attenuation to achieve the desired system balance IN IMPORTANT Do not increase any Input Sens setting for any amplifier channel or channel pair in the system beyond the maximum level established during this procedure Doing so will result in audible dis
16. 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 amplifier and on the amplifier packaging Serial Number INSTALLATION APPLICATIONS This amplifier is designed for operation in vehicles with 12 volt 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 This product is not certified or approved for use in aircraft Do not attempt to bridge the outputs of this amplifier with the outputs of a second amplifier including an identical one Remote Turn On Connector p9 6 Chassis Ground 12V Power Connector Connector pg 5 pg 5 Ground Remote 12VDC FUSES 20A 20A Made in China Power Status Left amp Right Input Sensitivity Filter Frequency Protection Status Indicator Preamp Output Jacks Control Selector Indicator pg 11 pg 8 pg 7 pg 11 pg 11 High Level Left
17. e date Non defective items received will be returned freight collect Customer is responsible for shipping charges and insurance in sending the product to JL Audio Freight damage on returns is not covered under warranty For Service Information in the U S A please call JL Audio Customer Service 954 443 1100 9 00 AM 5 30 PM Eastern Time Zone 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 J2360_2_CH 06 2009
18. een designed for bridging of its channels without the need for input inversion adaptors To bridge a pair of channels use the Left and Right speaker connectors only the Left and Right remain unused When bridged the amplifier will deliver optimum power into a 4 ohm load J2360 2 E IMPORTANT When bridged the amplifier will deliver 360W x 1 into a 4 ohm load or 220W x 1 into an 8 ohm load Operating a pair of bridged channels into a load lower than 4 ohms is not recommended Because a bridged pair of channels requires that both channels receive input you need to connect both left and right inputs to the source unit Connection of only one input will result in reduced power output increased distortion and can cause the amplifier to overheat Do not do this When the J2 360 2 is operating in bridged mode the output will be in mono only one channel This mono channel can contain right channel only information left channel only information or the sum of the information from both the right and left channels In order to achieve one of these options configure the inputs to that pair of channels in one of these two ways 1 Left Channel Only or Right Channel Only Information If you wish to send a left only or right only signal to the J2 360 2 use a Y Adaptor to split the single channel signal into both left and right RCA inputs This option is useful when using the J2 360 2 to d
19. f component speakers the J2 360 2 s in a bi amplified system Off Defeats the filter completely allowing the full range of frequencies present at the inputs to feed the amplifier This is useful for systems utilizing outboard crossovers or requiring full range reproduction from the J2 360 2 LP Low Pass Configures the filter to attenuate frequencies above the selected filter frequency at a rate of 12dB per octave This is useful for connection of subwoofer s to the J2 360 2 s in a bi amplified system 2 Filter Freq Hz The J2 360 2 has separate Filter Frequency controls in each Channel Controls section for the low pass filter and the high pass filter You will only use one of these in each channel section depending on which Filter Mode you have selected or none of them if you have selected the Off position for the Filter Mode When active the filter in the J2 360 2 is fully variable between 50 Hz and 500 Hz via the control knob labeled Filter Frequency Hz The 9 oclock position corresponds to 80 Hz and is a good starting point for system tuning BASS BOOST CONTROLS Each channel pair of the J2 360 2 includes a single band boost only bass equalizer controlled by a rotary knob marked Bass Boost This control has a boost range of 0dB full counterclockwise to 9dB full clockwise and is centered at 45 Hz C Prot Off 9dB z Bass Boost JL Audio
20. ons as explained below Check to ensure that the speaker wires are making a good connection with the metal inside the terminal block The speaker wire connectors are designed to accept up to 8 AWG wire Make sure to strip the wire to allow for a sufficient connection with the metal inside the terminal block J 360 2 INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions Z N J ff Preamp Amplifier N Outputs Inputs j 5 LEFT LEFT m O N Power High Level Inputs HP Off LP Protect Filter Mode d min max 50 500 Of 9dB Input Sens Filter Frequency Hz Bass Boost J 360 2 RIGHT RIGHT 16 JL Audio J 360 2 INSTALLATION NOTES JL Audio INSTALLATION NOTES J 360 2 LIMITED WARRANTY AMPLIFIERS USA JL Audio warrants this product to be free of defects in materials and workmanship for a period of one 1 year from the original date of purchase 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 inst
21. rive left channel speakers only and another J2 360 2 to drive right channel speakers only 2 Left Right Channel Information When bridged and fed by a stereo input the J2 360 2 will automatically combine the left and right input channels into a summed mono left right channel This option is useful when using a the J2 360 2 to drive a subwoofer system or a summed mono center channel AMPLIFIER STATUS INDICATOR LIGHTS amp PROTECTION CIRCUITRY There are two status indicator lights on the control panel of the amplifier o O Power D Protect f 9dB iss Boost 1 1 Power Green lights to indicate that the amplifier is turned on and operating normally Located at the far left of the control panel 2 Protect Red Indicates that the amplifier protection circuitry has been activated to prevent product failure due to thermal overload short circuit or a dangerously low impedance connected to the amplifier outputs Connecting the speaker outputs to an impedance lower than 2 ohms stereo 4 ohms bridged will cause this protection mode to activate When this protection mode is activated the amplifier will shut down to protect its circuitry When the problem is corrected the amplifier will return to normal operation and the Protect LED will shut off JL Audio SERVICING YOUR AMPLIFIER If your amplifier fails or malfunctions please return it to your authorized JL Audio dealer so that it may be
22. tortion 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 source unit tone controls or EQ circuits EQ cuts will not require re adjustment Nom Target AC Voltage Impedance Bridged 42V 40V 38V not recommended not recommended JL Audio APPENDIX B J2 360 2 Specifications General Specifications Recommended Fuse Value 40A Recommended Fuse Type AFS AGU or MaxiFuse at battery 2 x 20A ATC fuses on amplifier chassis Input Sections No of Inputs One Stereo Pair Low Level Inputs Single ended with RCA jack inputs Low Level Input Range 200mV 4V RMS High Level Inputs Single ended with molded connector High Level Input Range 2V 10V RMS Amplifier Section Amplifier Topology Class A B with Dual N Channel MOSFET output stage Power Supply PWM switching type unregulated Rated Power with less than 1 THD 14 4V supply Stereo all channels driven 110W RMS x 2 4 ohms 135W RMS x 2 3 ohms 180W RMS x 2 2 ohms Bridged all channels driven 220W RMS x 1 8 ohms 270W RMS x 1 6 ohms 360W RMS x 1 4 ohms Frequency Response 10 Hz 35 kHz 0 5 dB Crossover Sections Filter Type 12dB octave High Pass or Low Pass with continuously variable cutoff frequency selection from 50 500 Hz
23. using appropriate hardware Use the same size power wire as the wire connected to the 12VDC connection minimum 4 AWG no longer than 36 inches 90 cm from the amplifier to the ground connection point In some vehicles it may be necessary to upgrade the battery ground wire See page 5 for important notice 7 Securely mount the amplifier using appropriate hardware 8 Connect the positive and negative power wires to the amplifier 9 Connect the remote turn on wire to the amplifier 10 Connect the input cables to the amplifier 11 Connect the speaker cables to the amplifier 12 Carefully review the amplifier s control settings to make sure that they are set according to the needs of the system 13 Install the power wire fuse 40A for a single J2 360 2 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 to obtain the right overall output and the desired balance in the system See Appendix A page 12 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
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