700459

JL Audio XD400 Manual

13
Zoom out
Zoom in
Previous page
1/20
Next page
13
After proper adjustment of the “Input
Sens.” controls for both channel pairs using
the method shown in Appendix A (page
14), you can fine tune filter frequencies and
attenuate either pair of channels to achieve
proper balance. For precise filter frequency
information refer to Appendix B (page 15).
MULTIAMPLIFIER SYSTEMS
Using the “Preamp Outputs” of the
XD400/4v2, it is easy to configure many
different multi-amplifier systems.
The most common type involves the
addition of a subwoofer amplifier, such as
the XD600/1v2. Common configurations
of such a system are described below.
Bi-Amplified System with one XD400/4v2 in
four-channel mode and a separate
subwoofer amplifier
This configuration requires that the separate
subwoofer amplifier has a built-in low-pass filter.
(All JL Audio amplifiers have this feature.)
In this configuration, channels 1&2 of the
XD400/4v2 will drive front component speakers
in stereo with high-pass filtering. Channels 3&4
will drive rear component speakers in stereo, also
with high-pass filtering. The separate amplifier
will drive the subwoofer system with low-pass
filtering (80 Hz is a good starting point).
Here are three possible configuration options:
A) Fade Subwoofer Level vs. HF Level:
Req uired: a source unit or processor with front
and rear pairs of stereo outputs.
Inp ut Connections: one stereo pair of source
unit outputs is connected to the “CH 1 (Left)”
and “CH 2 (Right)” inputs of the XD400/4v2
(select “2 Ch.” on the “Input Mode” switch).
The second stereo pair of source unit outputs
is connected to the subwoofer amplifier inputs.
Res ult: with this option, the user has the ability to
fade the level of the subwoofer amplifier’s input
relative to the HF channels, but cannot control
front-to-rear fading of the HF channels. The
relative level of the front and rear HF channels
will be fixed by the XD400/4v2’s “Input Sens.”
settings and will not be user adjustable from
the front of the vehicle.
B) Subwoofer Level Control Only:
Req uired: a source unit or processor with left,
right and dedicated subwoofer outputs.
Inp ut Connections: The main stereo pair
of source unit outputs is connected to the
“CH 1 (Left)” and “CH 2 (Right)” inputs of
the XD400/4v2 (select “2 Ch.” on the “Input
Mode” switch). The source unit’s dedicated
subwoofer output is connected to the
subwoofer amplifier inputs.
Res ult: with this option, the user has the ability
to control the absolute level of the subwoofer
channel relative to the HF channels, but
cannot fade the front and rear HF channels
relative to each other.
Set the subwoofer amplifier’s “Input Sens.”
with the source unit’s subwoofer level control
set at 3/4 of full output.
C) Front to Rear HF Fading and Subwoofer
Level Control:
Req uired: a source unit or processor with
front and rear pairs of stereo outputs plus a
dedicated subwoofer output.
Inp ut Connections: one stereo pair of source unit
outputs is connected to the “CH 1 (Left)” and
“CH 2 (Right)” inputs of the XD400/4v2.
The second stereo pair of source unit outputs
is connected to the “CH 3 (Left)” and “CH
4 (Right)” inputs of the XD400/4v2 (select
“4 Ch.” on the “Input Mode” switch). The
source unit’s dedicated subwoofer output is
connected to the subwoofer amplifier inputs.
… 13 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for JL Audio XD400 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of JL Audio XD400 in the language / languages: English as an attachment in your email.

The manual is 1,48 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info