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limited warrantY - marine ProduCts (usa)

JL AUDIO warrants this product to be free of defects in materials and workmanship for a period of  

two (2) years from the original date of purchase. 

This warranty is not transferable 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 installation 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 purchase 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.

Single-Cycle Control™ (U.S. Patent #6,084,450) is used under exclusive license for mobile audio from Power Physics, Inc. - Newport Beach, CA

 

MHD900/5MAN-CH-050509

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...

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