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OWNER’S MANUAL

1500W Monoblock Subwoofer 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 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. For additional information, 

visit www.jlaudio.com/support.

Summary of Contents for NexD RD1500/1

Page 1: ...rized 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 p...

Page 2: ...und 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 electr...

Page 3: ...anner 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 c...

Page 4: ...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 of the JL A...

Page 5: ...w The ground connection should be made using 2 AWG copper 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...

Page 6: ...rminal 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 If a source unit does not have a dedicated remote tu...

Page 7: ...n you should select The High position on the Input Voltage switch selects an input sensitivity range between 800mV and 8V for all input channels This is useful for certain high output preamp level sig...

Page 8: ...void distortion Correct use of the filter can substantially improve the fidelity of your audio system LP Filter Operation The RD 500 1 monoblock employs a 12 dB per octave low pass active filter with...

Page 9: ...of the preamp output SUBWOOFER OUTPUTS The RD1500 1 is designed to deliver power into subwoofer loads equal to or greater than 1 ohm of nominal impedance The RD1500 1 s subwoofer outputs are designed...

Page 10: ...ondition remains it will return to red and mute the output again A continuous over current condition is displayed with alternating red blue lights Because the muting behavior may be very short in dura...

Page 11: ...try 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 wa...

Page 12: ...or reasonable gain overlap with moderate clipping at full volume 5 Verify that you have disconnected the speakers before proceeding Play a track with an appropriate sine wave within the frequency rang...

Page 13: ...B referred to 1W A weighted 20 Hz 20 kHz noise bandwidth Frequency Response 7 Hz 500 Hz 0 1dB Damping Factor 1100 4 ohms 50 Hz 550 2 ohms 50 Hz Input Section No of Inputs One Stereo Pair Input Type Di...

Page 14: ...s required To test for this problem jump the 12VDC wire to the Remote terminal to see if the amplifier turns on I hear a repetitive ticking or popping sound coming out of the speaker s Check Check the...

Page 15: ...e 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 amplif...

Page 16: ...16 JL Audio RD1500 1 Owner s Manual INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions...

Page 17: ...17...

Page 18: ...18 JL Audio RD1500 1 Owner s Manual NOTES...

Page 19: ...19 NOTES...

Page 20: ...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 Th...

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