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owner’s manual

5-Channel Class-D System 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 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 HD900/5

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 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 amplifie...

Page 2: ...r voltages other than 12V may result in damage to the product and will void the warranty This product is not certified 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 important that you take the time to read this manual and that you plan out your installation ca...

Page 3: ...lugs firmly into the speaker connector receptacles 11 Carefully review the amplifier s control settings to make sure that they are set according to the needs of the system 12 Install power wire fuse 60A for a single HD900 5 and reconnect the negative battery post terminal 13 Turn on the source unit at a low level to double check that the amplifier is configured correctly Resist the temptation to c...

Page 4: ... vehicle s battery This will prevent accidental damage to the system the vehicle and your body during installation 12V Battery Connection You will need to connect a power wire to the vehicle s positive battery terminal using an appropriate power ring or specialized battery terminal connector such as the JL Audio XB BTU or XD BTS This connection must be tight and corrosion free to ensure proper con...

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 that you will use regardless of what voltage output capability is claimed by the source unit The High position of the Input Voltage switch selects an input sensitivity range between 800mV and 8V This i...

Page 6: ...rcuit The output 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 intuitive it is correct as described CHANNEL CONTROL SECTIONS To the left of the General Setup section on the Control Panel of the amplifer are three sets of controls one for the Rear C...

Page 7: ...nd 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 subwoofer system from one or more amplifiers or channels and component speakers from separate amplifiers or channels The HD900 5 can be easily configured to drive a complete bi amplified system consisting...

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 alternating Red and Green on the Status LED check that there are no short circuits to chassis ground in any of the speaker wiring in the vehicle Disconnect speaker connectors from the amplifier one by one...

Page 9: ...ain Channels Stereo 100W RMS x 4 4Ω 11V 14 5V 75W RMS x 4 1 5 3Ω 11V 14 5V Rated Power Main Channels Bridged 200W RMS x 2 8Ω 11V 14 5V 150W RMS x 2 3 6Ω 11V 14 5V Rated Power Subwoofer Channel 500W RMS x 1 1 5 4Ω 11V 14 5V THD at Rated Power Main Channels 0 03 4Ω per channel Subwoofer Channel 0 05 4Ω Average at 1 kHz Signal to Noise Ratio 20 kHz Bandwidth Referred to Rated Power 108 dBA Referred t...

Page 10: ...20 0 V 32 0 V 44 7 V 4Ω 20 0 V 24 5 V 44 7 V 3Ω 15 0 V 21 2 V 38 7 V 2Ω 12 2 V not recommended 31 6 V 1 5Ω 10 6 V not recommended 27 4 V Appendix B Precise Frequency Selection Chart Filter FREQ Detent Panel Actual Number Marking Freq Hz Full counter clockwise 53 01 50 53 02 53 03 53 04 53 05 54 06 55 07 57 08 58 09 60 60 10 62 11 64 12 66 13 69 14 71 15 74 16 77 17 80 80 18 85 19 86 20 90 21 95 22...

Page 11: ...er 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 properly set the input sensitivity on my amplifier Please refer to Appendix C pages 18 19 to set the input sensitivity for maximum low distortion output My amplifier doesn t turn on Check the fuse s not...

Page 12: ...22 JL Audio HD900 5 Owner s Manual 23 INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions ...

Page 13: ...o 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 author...

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