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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 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

1000W Monoblock Class D Marine Subwoofer Amplifier

Summary of Contents for MD1000/1v2

Page 1: ...ment 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 installati...

Page 2: ...low The serial number can be found on the bottom panel of the amplifier and on the amplifier packaging Serial Number INSTALLATION APPLICATIONS This amplifier is designed for operation in vessels with...

Page 3: ...mplifier using the supplied screws so that it does not come loose in the event of a collision or a sudden jolt to the vessel Stupid Mistakes to Avoid Check before drilling any holes in your vessel to...

Page 4: ...e vessel Do not install the fuse until the power wire has been securely connected to the amplifier 4 Connect negative power wire to the negative battery post Use the same size power wire as the wire c...

Page 5: ...o that no bare wire is exposed While holding the wire in place tighten the set screw firmly taking care not to strip the head of the screw The ground connection should be made using the same gauge wir...

Page 6: ...to send signal to the amplifier section through the use of two differential balanced inputs one for the left channel signal and one for the right channel signal Connection is via RCA type jacks You m...

Page 7: ...he division of frequency ranges to different speakers can be done with passive filters coils and or capacitors between the amplifier outputs and the speakers which are acceptable and commonly used for...

Page 8: ...n This is useful if you are using an external active crossover in the system With the internal crossover turned off the M1000 1v2 s upper frequency response limit is 500 Hz due to its subwoofer specif...

Page 9: ...kwise rotation the audio will mute completely At full clockwise rotation the level will be the same as if the HD RLC was not connected at all In other words it operates strictly as a level attenuator...

Page 10: ...cause the amplifier to initiate a protection mode which reduces power output STATUS LED PROTECTION CIRCUITRY There is a single multi color LED on the top surface of the amplifier to indicate the ampli...

Page 11: ...fails or malfunctions please return it to your authorized JL Audio dealer so that it may be sent in to JL Audio for service There are no user serviceable parts or fuses inside the amplifier The unique...

Page 12: ...sensitivity adjustment according to the nominal impedance of the subwoofer system connected to the amplifier outputs 6 Verify that you have disconnected the subwoofer s before proceeding Play a track...

Page 13: ...Unregulated MOSFET switching type Rated Power at 14 4V with less than 1 THD Noise 20Hz 500 Hz 600W RMS x 1 4 ohms 800W RMS x 1 3 ohms 1000W RMS x 1 2 ohms Rated Power 12 5V with less than 1 THD Noise...

Page 14: ...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 the speaker wires for a possibl...

Page 15: ...using an AC voltmeter to measure the voltage from the source unit while an appropriate low frequency test tone is played through the source unit disconnect the input cables from the amplifier prior to...

Page 16: ...16 JL Audio MD1000 1v2 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 MD1000 1v2 Owner s Manual INSTALLATION NOTES...

Page 19: ...19 INSTALLATION NOTES...

Page 20: ...tail 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...

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