JL Audio XD600/6 owner manual System Configurations, Bi-AmpLIFIED SYSTEMS, No User Adjustability

SYSTEM CONFIGURATIONS

The XD600/6 is a flexible amplifier, well- suited for a multitude of system configurations. In this section, the most likely configurations are explained in detail.

Once you have selected your desired configuration, you can use the amplifier panel drawing on pages 18 & 19 to mark the required switch positions for easy reference.

Bi-AmpLIFIED SYSTEMS

Bi-amplified systems are defined as systems in which separate amplifier channels drive low- frequency (LF) and 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 XD600/6 is designed to work as the only amplifier in a bi-amplified system.

Bi-Amplified System with the XD600/6 In this configuration, channels 5&6 of the

XD600/6 will drive subwoofers (stereo 75W x 2 at 4 ohms, 100W x 2 at 2 ohms, or bridged 200W x 1 at 4 ohms) with low-pass filtering. Channels 1&2 and channels 3&4 will drive component speakers in stereo (75W x 4 at 4 ohms or 100W x 2 at 2 ohms) with high-pass filtering.

Input connection options for a bi-amplified system with one XD600/6 are as follows:

A)No User Adjustability:

Required: a basic source unit or processor with one pair of stereo outputs.

Input Connections: a single pair of stereo source unit outputs is connected to the “Ch 1” and “Ch 2” inputs of the XD600/6. Then, select “2 ch.” on the XD600/6’s “Input Mode” switch.

Result: the relative level of the LF and HF channels will be fixed by the XD600/6’s “Input Sens.” settings and will not be user

adjustable from the front of the vehicle (unless an optional HD-RLC is connected the “Remote Level Control” port and used as a subwoofer level control).

B)Fade Front vs. Rear with no Subwoofer Level Control:

Required: a basic source unit or processor with two pairs of stereo outputs.

Input Connections: one pair of stereo source unit outputs is connected to the “CH 1 (Left)” and “CH 2 (Right)” inputs and the second pair of stereo source unit outputs is connected

to the “CH 3 (Left)” and “CH 4 (Right)” inputs of the XD600/6 (select “4 Ch.” on the “Input Mode” switch in the “Channel 5 & 6 Controls” section).

Result: the relative level of the LF and HF channels will be fixed by the XD600/6’s “Input Sens.” settings and will not be user adjustable from the front of the vehicle, but the user will be able to fade the signal from front to rear.

An optional HD-RLC can be connected the “Remote Level Control” port and used as a subwoofer level control, if desired.

C)Fade Subwoofer Level vs. HF Level: Required: a basic source unit or processor with

two pairs of stereo outputs.

Input Connections: the first stereo pair of source unit outputs each split with a “Y-Adaptor” allowing the left signal to be sent to the “CH 1 (Left)” and “CH 3 (Left)” inputs and the right signal to be sent to the “CH 2 (Right)” and “CH 4 (Right)” inputs of the XD600/6. The second stereo pair of source unit outputs is connected to the “CH 5 (Left)” and “CH 6 (Right)” inputs (select “6 Ch.” on the “Input Mode” switch).

Result: in this mode, the user has the ability to fade or control the level of the LF channels relative to the HF channels via the source unit’s fader control without exceeding the maximum clean output level set by each amplifier section’s “Input Sens.” controls.

12 JL Audio - XD600/6 Owner’s Manual