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Subwoofer pre-out not working

Recently I noticed my sub was not working with my set up. At first I thought it was the cable connecting the sub to the receiver, I got a new one but that didn't work either. I connected the speaker A wires to the sub then to the speakers and that got my bass back. I'm still not sure why the pre-out doesn't work though. On the receiver itself when I select channel output with the remote I use to get the options for centre speaker, rear speaker and then subwoofer. Now when I select the the channel select option the subwoofer option doesn't even appear anymore. Do I need to reset the receiver to get this option back to get the preout working again? If so how do I do that? Or is the pre out for the sub just burnt out and not usable anymore?

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  • 6 Answers

SOURCE: Subwoofer preout and bass

did you tell the receiver that you have a subwoofer connected (thru the quick setup)?

Posted on Aug 05, 2008

  • 899 Answers

SOURCE: No Sub Woofer Pre out output

I've got the same model and the pre out transistor needs to be replaced,
sometimes you can get it to work by unplugging the reciever and the pre out
then plug in the reciever and plug the pre out in a couple of times or so untill it comes on
or unplug the amp from the wall then plug in the pre out , turn on the reciever wait for sounds to come on then plug in the amp.
if that don't do it the pre out transistor needs to be replaced

Posted on Oct 16, 2008

  • 8546 Answers

SOURCE: I just bought a pioneer

RTFM. The manual is available at

Some setup is required, like telling the receiver you have a subwoofer and setting speaker levels. Modern avr's are NOTplug and play.

Posted on Aug 19, 2010

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These receivers have a history of having broken connections on the subwoofer jack. Would have to go in for repairs.

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You can prove the sub pre-output works by running an RCA cable from it to the input of a tape deck, TV or any other device that accepts Line In and will either display it or play it. Test it on VERY LOW volume at the receiving device.

Different sub pre-out cable?

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No output to the subwoofer using the sub pre out RCA jack.

I'm assuming your subwoofer is self-amplified, otherwise it won't work with a preamp (rca) input.

Under Speaker Setup you have to have Subwoofer set to YES (page 16).

If you have good bass-capable main speakers I would recommend setting the subwoofer playback mode to LFE+Main, otherwise just LFE.

Beyond this we would need to know something more about the subwoofer and its controls.

Connect any other preamp out channel, like CDR/Tape OUT, to the sub and tune an FM station to see if the sub is capable of processing audio. A 'normal' audio signal would sound muffled but it would prove the cabling, amp and speaker at least function and point us back to setup as the culprit.

Dec 08, 2010 | Denon AVR-587

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My JVC Subwoofer does'nt work !!! Connected

If your connected via the sub pre out on your reciever check your setting to make sure that it is turned on also if this is done you may try using speaker cables to by wire the subwoofer

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How to hook up my subwoofer

It sounds like you're doing everything right. Did you define the sub to the Onkyo (Subwoofer = Yes, page 22)?

Let's prove the sub works. Set its volume about half-way, cutoff= 170Hz. Temporarily connect an RCA cable from its Line Input to one of the Tape Out connectors on the Onkyo and play some FM through it. If it's alive you'll hear the low end of the music.

Don't buy into the hype that there are different pedigrees of RCA (or speaker) cables that will make an audible difference. Save your money.

May 04, 2010 | Onkyo TX-DS696 Receiver

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Kenwood 107VR rec and No vol from Sub Output w/ menu Opt On

In the setup menu are the speakers set to large or small? On some receivers if you have it set to large all the bass is directed to the right-left fronts.
On my pioneer receiver if the speakers are set to large the sub-pre-out only works if the receiver is in a surround mode, if its in stereo mode and the speakers are set to large the sub-pre-out is dead. If the speakers are set to small the sub-pre-out works all the time.
Also, some receivers won't send a signal to the sub-pre-out if there is no LFE discreet signal info from the dolby digital or dts bitstreem.
For example I have several older dvd's that light up the L C R SL SR icons on my receiver, but don't light up the LFE icon. I have other older dvd's that just light up the L and R icons meaning they are only recorded in stereo like a vhs tape recorded in dolby surround.
In my basement I also have a kenwood dolby digital receiver.
I've noticed that when a dvd only lights up the left and right icons the pioneer will automatically switch to dolby pro logic surround. The kenwood will only send the signal to the left and right fronts (stereo). If I manually switch it (kenwood) to dolby pro logic I'll get sound from all the speakers just like the pioneer, but it does'nt do it by itself.
Most receivers that have a tape monitor won't work in surround mode with the tape monitor on. The pioneer will let me use the tape monitor with dolby pro-logic but won't pass through a dolby digital signal with the monitor on.
Hope this helps.

Apr 18, 2010 | Kenwood 107VR

1 Answer

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Try using front pre out to the sub from the receiver. the crossover is in the sub anyway. If this works change your settings on the receiver and test again. If sub is still inop, could be an internal issue with the sub amp. Does your sub amp have an on/auto/off switch or light? check that as well. Hope this helps, if you need further assistance, send a reply and I'll help some more

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you may have to go into the onscreen menu and enable it,that shuld work

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Try setting the speaker settings on the receiver to small.

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1 Answer

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have u checked that the sub option on the reciver is on?

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