Question about Panasonic MXE CQ-C7401U CD Player

1 Answer

Subwoofer Output Not Working...

I've had this deck for about a year, everything has worked well. I have subs hooked up to the RCA sub output connectors to an amp and 2 10 inch subwoofers. I removed my subs to put somthing in my car, put the subs back and now I hardly get anything out of the subs. I took the subs and amp into a shop and verified they are working perfectly. I even hooked my ipod up to the amp and it worked fine. The amp powers up and everything, and only a little bass comes out. The shop said it is probably the deck that is the issue, has anyone ever had this issue? Everything works find except for that! It sux! Thanks for any help!

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 156 Answers
Re: Subwoofer Output Not Working...

The first thing to try is disconnecting ONE of the two subs. See if you get more bass with a single sub than with both. If you do, re-connect the second subwoofer, but reverse the (+) and (-) wires.

Posted on Jun 19, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Were is the sub woofer tie into at.

You should have two (or more) RCA plugs on the back of the deck that will act as pre-amp outputs for subwoofer and speakers.
Failing that, your wiring harness should have come with a wiring diagram that will let you know which is the subwoofer output.
Failint THAT, the deck itself should have a wiring diagram on the bottom or side telling your which wire is which.

And if that fails, Your deck may not have a subwoofer output. Just attach your sub to the amp pre-out like everyone else.

May 11, 2011 | Pioneer DEH-2400F CD Player

1 Answer

I have a Kenwood kdc-mp342u car cd player installed in my truck. I have subs hooked up to it and everything was working fine until i had to reset my radio and when i reset it the "sub Level...

Subwoofer output: Hold the (AM-) button down for at least two seconds. You can do this function when "SWPRE" in is set to . The SWPRE (Switching Preout) Switches the preout between rear output ("R") and subwoofer output ("SW").

Nov 10, 2010 | Kenwood KDC-MP342U Car CD Player

1 Answer

2 RCA's coming from amp into radio's single subwoofer output RCA?

You can either hook up the left channel only or buy a splitter that separates one input into two outputs.

Oct 03, 2009 | Pioneer DEH-P690UB CD Player

1 Answer

How do you hook up a subwoofer to Alpine CDE-7858

go into the menu of the radio make sure sub output turn on

Aug 28, 2009 | Alpine CDE-7858 CD Player

1 Answer

DEH-P360 Won't output to rear channels/Sub

Make sure that the FIE (front image enhancement) is off. If it is on, the rear outputs are muted.

Oct 01, 2008 | Pioneer DEH-P3600 CD Player

1 Answer

Subwoofer Output Not Working...

first check that the subwoofer function on the actual head unit is turned up,second check that the gain on the amp is at bout half way then check that it is on a lp (low pass setting)
then check that the boost on the amp is turned up.
please leave feedback.

Jul 02, 2008 | Eclipse CD5405

1 Answer

Still no sub woofer output


if u still have doubt contact me again.

May 26, 2008 | Alpine CDE-7856 CD Player

1 Answer

Swapped out cd players now getting high pass through subs

this is very easy...just unplug the rca cables out of the back of the deck, and plug them into the "subwoofer" output. On some alpine decks this is on a "pigtail" wire that extends from the deck. Once this is connected to the right output, you can control the subwoofer level from the volume knob by pressing it inwards.
Also.... your amplifier should have a low pass filter, it should be on a switch marked "LPF". Make sure this is switched on.

Feb 25, 2008 | Car Audio Receivers

1 Answer

No sub when listening to a cd

you're using the wrong remote output wire. You have it hooked to the power ANTenna wire (blue) which turns off when not using the tuner. You need to use the REM OUT wire (blue w/ white stripe).

Oct 14, 2007 | Sony CDX-M630 CD Player

1 Answer

RCA Problem

You need an active subwoofer input in your amplifier.Which amplifier you are using? Only latest pioneer amplifiers has active sub input and sub output which can be connected to subwoofer.If you dont have active input then you will have to connect it the way you did in old player.

Feb 10, 2007 | Pioneer DEH-1800 CD Player

Not finding what you are looking for?
Panasonic MXE CQ-C7401U CD Player Logo

Related Topics:

268 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Car Audio Receivers Experts

xxxxxx xxx

Level 3 Expert

4679 Answers


Level 3 Expert

56798 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Panasonic Car Audio Receiver Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides