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Thank you for purchasing a JL Audio amplifier for  

your marine sound system. 

Your amplifier has been designed and manufactured to exacting 

standards in order to ensure years of musical enjoyment in your vessel. 

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 the JL Audio Technical Support Department  

at (954) 443-1100 during business hours.

owner’s manual

600W Marine 3/4/5/6 Channel Amplifier

Summary of Contents for NexD M600/6

Page 1: ...quipment 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...

Page 2: ...is likely to get wet 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 t...

Page 3: ...escription The JL Audio M600 6 is a six channel full range audio amplifier utilizing JL Audio NexD ultra high speed switching technology to deliver outstanding fidelity and efficiency The M600 6 can b...

Page 4: ...rect speaker level signal applied to the amplifier you may use a line output converter to reduce the signal level Input Sensitivity Controls The controls labeled Input Sens located in each channel sec...

Page 5: ...h cut off frequency content at the input to the amplifier Active filters are more stable than passive filters and do not introduce extraneous resistance which can degrade subwoofer performance The act...

Page 6: ...into a 4 ohm load or 150W 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 re...

Page 7: ...as systems in which separate amplifier channels drive low frequency LF and high frequency HF speakers and are separately filtered to send appropriate frequency ranges to each speaker system The most...

Page 8: ...hannels 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 o...

Page 9: ...g sufficient voltage check your speaker connections 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 con...

Page 10: ...18 JL Audio M600 6 Owner s Manual 19 INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions...

Page 11: ...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 w...

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