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owner’s manual

1200 W CLASS-D MONOBLOCK SUBWOOFER AMPLIFIER

 1200/1

v3

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 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 amplifier’s 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.

Summary of Contents for 1200/1v3

Page 1: ...dio 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...

Page 2: ...ere 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 using appropriate hardware so that it does not c...

Page 3: ...ation depends on appropriate power connections and fuse protection Product Description The JL Audio 1200 1v3 is a monoblock subwoofer amplifier utilizing proprietary and patented Class D technology It...

Page 4: ...ty 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...

Page 5: ...n 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 quieter for a given i...

Page 6: ...Filter The preamp output is filtered by a fully variable active filter incorporated into the output section and is not affected by the bass control processing selected for the amplifier In Out Filter...

Page 7: ...the amplifier output to distort excessively Speaker connections to the 1200 1v3 are straightforward and take place at the far right of the front panel You will notice that there are two positive conn...

Page 8: ...ly and easily in just a few minutes using equipment which is commonly available in installation bays Necessary Equipment Digital AC Voltmeter CD with a sine wave test tone recorded at 0 dB reference l...

Page 9: ...20 67 21 69 22 72 23 75 24 80 78 25 82 26 86 27 90 28 95 29 100 100 30 107 31 113 32 122 33 131 34 143 35 156 36 200 169 37 186 38 192 39 197 Full clockwise 197 CHART A 3 INFRASONIC FILTER Detent Pan...

Page 10: ...ter amplifier s Output Mode switch to the center Amp Filter position This will send a parallel mono summed signal from the Master amplifier s Amp LP Filter section to its preamp outputs 2 Connect an R...

Page 11: ...cient connection with the metal inside the terminal block How do I properly set the input sensitivity on my amplifier Please refer to Appendix A page 14 to set the input sensitivity for maximum low di...

Page 12: ...er Output MONO OUTPUT ONLY Left Output Right Output Left Ch Right Ch Filter Freq Hz Filter Freq Hz Infrasonic Freq Hz Remote Bass Port Full Range Amp Filter Out Filter Output Mode Filter Slope Mode Mo...

Page 13: ...tail 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...

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