JL Audio 98220 - Manuals - manualsarea.com

Page 4 - Product descriPtion; The JL Audio HD750/1 is a very powerful and

4 | JL Audio - HD750/1 Owner’s Manual Product descriPtion The JL Audio HD750/1 is a very powerful and compact monoblock (single channel), wide-range amplifier utilizing patented Single Cycle Control™ Class D technology. This groundbreaking technology delivers referencegrade sonic performance while r...

Page 5 - tYPical installation sequence

5 tYPical installation sequence The following represents the sequence for a typical amplifier installation, using an aftermarket source unit or OEM Interface processor (like the CleanSweep® CL441dsp). Additional steps and different procedures may be required in some applications. If you have any que...

Page 7 - ground connection; The chassis ground connection must be; The HD750/1’s “Remote” turn-on connector; To connect the power wires and the remote

7 ground connection The chassis ground connection must be made using 4 AWG or 8 AWG pure copper wire and should be kept as short as possible, while accessing a solid piece of sheet metal in the vehicle. The surface of the sheet metal should be sanded at the contact point to create a clean, metal-to-...

Page 10 - After using this procedure, you can then adjust; Do not increase the “Input Sens.” setting for; Crossovers are groups of electronic filters; ) “Filter Mode” Control: this switch allows you

10 | JL Audio - HD750/1 Owner’s Manual 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. “inp...

Page 12 - outPut PolaritY control; Depending on the distance relationship of; The “Output Polarity” switch on the HD; Neither switch position is “correct” for every; PreamP outPuts; The term “pass-through” refers to the fact that

12 | JL Audio - HD750/1 Owner’s Manual outPut PolaritY control Depending on the distance relationship of the mid-bass speakers and the subwoofers in a system, it can be desirable to reverse the polarity of the subwoofer system in order to produce a better transition between subwoofer and midbass spe...

Page 13 - sPeaker connections

13 remote leVel control (oPtional) With the addition of the optional Remote Level Control (HD-RLC), you can control the volume of the HD750/1 from the front of the vehicle. This is particularly useful for subwoofer level control. The HD-RLC connects to the jack labeled “Remote Level Control” on the ...

Page 14 - speaker connector Plugs; To connect the speaker wires to the amplifier,; You will notice that there are two sets of “+” and; There is a single multi-color LED on the

14 | JL Audio - HD750/1 Owner’s Manual Speaker loads below 1.5Ω nominal are not recommended and may cause the amplifier output to distort excessively. speaker connector Plugs To connect the speaker wires to the amplifier, unplug the speaker connector plug from the amplifier chassis (pull back firmly...

Page 15 - If your amplifier fails or malfunctions, please; Jl audio technical support:

15 4) Alternating Red and Green: lights to indicate that the amplifier is experiencing a fault that may require service of the amplifier, its wiring or the vehicle’s charging system. Audio is muted when this fault occurs. The most likely cause of this fault is a low supply voltage condition. If batt...

Page 17 - Amplifier Topology:

17 aPPendix a:Hd750/1 specifications Amplifier Topology: Class D, switching type with patented Single-Cycle Control™ technology. Power Supply: Pulse width modulation-regulated switching power supply Recommended Fuse Value / Type: 60A (AFS, AGU or MaxiFuse™) Rated Power: 750W RMS x 1 @ 1.5-4Ω (11V - ...

Page 18 - “Filter Freq”; detent Panel actual; JL Audio amplifiers utilizing the Regulated; necessary equipment

18 | JL Audio - HD750/1 Owner’s Manual aPPendix b: Precise Frequency selection chart “Filter Freq” detent Panel actual number marking Freq. Full counter-clockwise: 53 01 . . . . . . . . . . . “50” . . . . . . . . . . . .53 02 . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 03 . . . . . . ....

Page 19 - Output contacts of the amplifier.

19 the nine-step Procedure 1) Disconnect the Speaker Connector Plug. 2) Turn off all processing on the source unit (bass/treble, loudness, EQ, etc.). Set fader control to center position and subwoofer level control to 3/4 of maximum (if used to drive the HD750/1). Disconnect the HD-RLC Remote Level ...

Page 20 - driving a load equal to or greater than 1.5 ohms.; “my amplifier’s output fluctuates when i tap on it or hit a bump”; contact with the input jacks on the amplifier.; aPPendix d: troublesHooting

20 | JL Audio - HD750/1 Owner’s Manual “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 just visually, but with a continuity m...

Page 24 - if you need service on your Jl audio product:; (do not send product for repair to this address); international warranties:; by that country’s distributor and not by JL Audio, Inc.

limited warrantY - amPliFiers (usa) JL AUDIO warrants this product to be free of defects in materials and workmanship for a period of two (2) years. The warranty is extended to three (3) years total if installation is performed by an authorized JL Audio dealer using a JL Audio Premium Power Connecti...