JL Audio MHD900/5 Owner'S Manual Download Page 1

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owner’s manual

5-Channel Class-D Marine System Amplifier

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.

Summary of Contents for MHD900/5

Page 1: ...ed 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 ma...

Page 2: ...ertified 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 Planning Your Installation It is impor...

Page 3: ...make sure that they are set according to the needs of the system 12 Install power wire fuse 60A for a single MHD900 5 and reconnect the negative battery post terminal 13 Turn on the source unit at a...

Page 4: ...ropriately for safety Any positive power wires run through metal barriers must be protected with a high quality insulating grommet to prevent damage to the insulation of the wire Failure to do so may...

Page 5: ...channels This means that the Input Sens rotary controls will operate within that voltage window If you are using an aftermarket source unit with preamp level outputs this is most likely the position t...

Page 6: ...of the amplifier decreases for a given input voltage when the Input Range switch is placed in the High position The output increases with the switch in the Low position While this may sound counter i...

Page 7: ...high frequency HF speakers and are separately filtered to send appropriate frequency ranges to each speaker system The most common application of bi amplification in mobile audio is to drive a subwoo...

Page 8: ...f this is happening in your system have your charging system inspected to make sure it is working properly If no problem is found with the supply voltage to the amplifier and you are still seeing alte...

Page 9: ...Power Main Channels Stereo 100W RMS x 4 4 11V 14 5V 75W RMS x 4 1 5 3 11V 14 5V Rated Power Main Channels Bridged 200W RMS x 2 8 11V 14 5V 150W RMS x 2 3 6 11V 14 5V Rated Power Subwoofer Channel 500W...

Page 10: ...6 20 0 V 32 0 V 44 7 V 4 20 0 V 24 6 V 44 7 V 3 16 0 V 21 2 V 38 7 V 2 12 3 V not recommended 31 6 V 1 5 10 6 V not recommended 27 4 V Appendix B Precise Frequency Selection Chart Filter FREQ Detent P...

Page 11: ...r Connector Plugs The speaker wire connectors are designed to accept up to 12 AWG wire Make sure to strip the wire to allow for a sufficient connection with the metal inside each terminal How do I pro...

Page 12: ...22 JL Audio MHD900 5 Owner s Manual 23 INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions...

Page 13: ...s 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 serv...