JL Audio 98361 - Manuals

JL Audio 98361 Car Amplifier – User Manual in PDF format online.

Manuals:

User Manual

User Manual JL Audio 98361

Summary

Page 2 - JL Audio; PROTECT YOUR HEARING!; We value you as a long-term customer. For; SERIAL NUMBER; In the event that your amplifier requires

2 JL Audio PROTECT YOUR HEARING! We value you as a long-term customer. For that reason, we urge you to practice restraint in the operation of this product so as not to damage your hearing and that of others in your vehicle. Studies have shown that continuous exposure to high sound pressure levels ca...

Page 3 - JD; INSTALLATION APPLICATIONS

JD 400/4 3 INSTALLATION APPLICATIONS This amplifier is designed for operation in vehicles with 12V, negative-ground electrical systems. Use of this product in vehicles with positive ground and/or voltages other than 12V may result in damage to the product and will void the warranty. This product is ...

Page 4 - TYPICAL INSTALLATION SEQUENCE; The following represents the sequence; POWER CONNECTIONS; Before installing the amplifier, disconnect the

4 JL Audio TYPICAL INSTALLATION SEQUENCE The following represents the sequence for a typical amplifier installation, using an aftermarket source unit or OEM Interface processor (like the JL Audio FiX™ 82 or FiX™ 86). Additional steps and different procedures may be required in some applications. If ...

Page 5 - FUSE REQUIREMENTS

JD 400/4 5 The JD400/4’s “+12 VDC” and “Ground” connections are designed to accept 4 AWG power wire. 4 AWG copper wire is a minimum power wire size for this amplifier. If you are installing this amplifier with other amplifiers, use a main power wire that is appropriately sized for the overall curren...

Page 6 - If a source unit does not have a dedicated; These methods are useful when a conventional; DC Offset-Sensing: The amplifier will turn on

6 JL Audio TURN-ON OPTIONS The JD400/4 can be switched on and off using one of three methods, determined by the position of the amplifier’s “Turn-On Mode” switch. Please read these options and decide which is best suited for your specific system. 1) +12V Remote turn-on lead 2) DC Offset-Sensing turn...

Page 7 - INPUT SECTION

JD 400/4 7 INPUT SECTION The JD400/4’s input section allows you to send signals to the amplifier section through the use of two or four differential-balanced inputs. Input connections are via two pairs of traditional RCA-type jacks. INPUT SEC TION PREOUTS CH. 1&2 CH. 1&2 (only) CH. 3&4 C...

Page 8 - INPUT SENSITIVITY CONTROLS; Rotating the control clockwise will result; To properly set the amplifier for maximum; any channel(s) of any amplifier in the system; Most speakers are not designed to reproduce

8 JL Audio INPUT SENSITIVITY CONTROLS The “Input Sens.” control is used to match the source unit’s output voltage to the input stage of the amplifier for maximum clean output. Rotating the control clockwise will result in higher sensitivity (louder for a given input voltage). Rotating the control co...

Page 9 - PREOUTS; Note: When the “Input Voltage” switch is in its

JD 400/4 9 1) “Filter Mode” Controls: The JD400/4 employs 12 dB per octave filters for each pair of channels. Each of these filters can be controlled or defeated completely by way of the three-position “Filter Mode” switches in each Channel Section: “Off”: Defeats the filter completely, allowing the...

Page 10 - SPEAKER OUTPUTS; The JD400/4’s speaker outputs are designed; BRIDGING CONSIDERATIONS; Bridging is the practice of combining the

10 JL Audio SPEAKER OUTPUTS The JD400/4’s speaker outputs are designed to accept 16 AWG - 8 AWG wire. To connect the speaker wires to the amplifier, first back out the set screws on the top of the terminal block, using the supplied 2.5 mm hex wrench. Strip 1/2 inch (12 mm) of insulation from the end...

Page 11 - STATUS LEDS / PROTECTION CIRCUITRY; JD amplifiers are equipped with separate; Status LED; Protection LED; The only condition that will shut down an

JD 400/4 11 right (CH. 2&4) RCA inputs. This option is useful when using a pair of the JD400/4’s channels to drive left channel speakers only and the other pair of the JD400/4’s channels to drive right channel speakers only. 2) Left + Right Channel Information: When bridged and fed by a stereo i...

Page 12 - SYSTEM CONFIGURATIONS; Input connection options for a bi-amplified

12 JL Audio SYSTEM CONFIGURATIONS The JD400/4 is a flexible amplifier, well-suited for a multitude of system configurations. In this section, the most likely configurations for a system with a single JD400/4 are explained in detail. Once you have selected your desired configuration, you can use the ...

Page 13 - MULTI-AMPLIFIER SYSTEMS; Here are three possible configuration options:; SERVICING YOUR AMPLIFIER

JD 400/4 13 MULTI-AMPLIFIER SYSTEMS Using the “Preamp Outputs” of the JD400/4, it is easy to configure many different multi-amplifier systems. The most common type involves the addition of a subwoofer amplifier, such as the JD500/1. Common configurations of such a system are described as follows. Bi...

Page 14 - Necessary Equipment; • Sine-wave test tone recorded at 0 dBfs reference; The Seven-Step Procedure; amplifier’s speaker output connectors.; both “Input Sens.” controls all the way down.

14 JL Audio APPENDIX A:Input Sensitivity Level Setting Follow the steps below to adjust the input sensitivity of each amplifier channel pair, simply and easily, in just a few minutes to achieve overall system balance. Necessary Equipment • Sine-wave test tone recorded at 0 dBfs reference level in th...

Page 15 - NexDTM Ultra-High Speed Class D; Rated Power at 14.4V with less than; Signal to Noise Ratio:

JD 400/4 15 APPENDIX B: JD400/4 Specifications Amplifier Section: Amplifier Topology: NexD™ Ultra-High Speed Class D Power Supply: Unregulated MOSFET switching type Rated Power at 14.4V with less than 1% THD+Noise (20 Hz - 20 kHz) RMS Method Stereo, all channels driven: 75W RMS x 4 @ 4 ohms, 100W RM...

Page 16 - “How do I properly set the input sensitivity on my amplifier?”; driving a load equal to or greater than 2 ohms.; “My amplifier’s output fluctuates when I tap on it or hit a bump.”; contact with the input jacks on the amplifier.; APPENDIX C: TROUBLESHOOTING

16 JL Audio “How do I properly set the input sensitivity on my amplifier?” Please refer to Appendix A (page 14) to set the input sensitivity for maximum, low-distortion output. “My amplifier doesn’t turn on.” Check the fuse, not just visually, but with a continuity meter. It is possible for a fuse t...

Page 17 - “My amplifier shuts off once in a while, usually at higher volumes.”

JD 400/4 17 “My amplifier shuts off once in a while, usually at higher volumes.” Check your voltage source and grounding point. The power supply of the amplifier will operate with charging system voltages down to 10V. Shutdown problems at higher volume levels can occur when the charging system volta...

Page 20 - 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...