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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?

Posted by Mike Dubois on

3 Related Answers


  • 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


  • 905 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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Related Questions:


Sub-out on Kenwood VR-6060 NOT Working with powered subwoofer

It seems like you've tried various connections and settings to get your JBL135 subwoofer working with your Kenwood receiver, but you're still facing issues. Let's break down the situation and provide some recommendations:
  1. Subwoofer Connection:
    • Using the LFE/Subwoofer Out: This is the preferred method for connecting a subwoofer. Ensure that the cable is firmly connected to both the subwoofer's LFE input and the receiver's Subwoofer Out port. Make sure you have enabled the subwoofer output in the receiver's settings menu.
  2. Subwoofer Settings:
    • Gain: Adjust the gain knob on the subwoofer to achieve the desired bass level. Experiment with different settings to find the right balance.
    • Crossover: Set the crossover frequency on the subwoofer to blend with your tower speakers. Start with a conservative setting, such as 80Hz, and adjust as needed.
  3. Receiver Settings:
    • Speaker Configuration: Set your tower speakers to "Small" in the receiver's settings menu to redirect bass frequencies to the subwoofer. This ensures that the tower speakers are not trying to reproduce deep bass.
    • Bass Management: Enable the appropriate bass management settings in the receiver's menu, which typically includes crossover frequency and speaker size adjustments.
  4. Check Subwoofer Cable and Port:
    • Ensure that the subwoofer cable is in good condition and securely connected to both the subwoofer and receiver.
    • Try using a different cable or testing the subwoofer with another receiver if possible to rule out cable or port issues.
  5. Factory Reset:
    • If you've exhausted all troubleshooting steps, you may consider performing a factory reset on your Kenwood receiver. This will reset all settings to their default values, potentially resolving any configuration issues.
If none of the above suggestions work, it's advisable to consult the user manual for your specific Kenwood receiver model or contact Kenwood customer support for further assistance. They can provide more detailed guidance based on your equipment and setup.

Pioneer Elite VSX-92TXH subwoofer pre out does not work

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

I have atomic A-8 subwoofer and philips FR740 receiver. when i turn the amplifier and the subwoofer "on", the subwoofer starts to hum loudly and it is wery annoying. i made all the connections...

The symptom sounds like an open signal shield somewhere and the cable is acting like an antenna for airborne electrical noise.

Disconnect the RCA cable at the sub. Is it still humming? NO? Problem is external to it. YES? Internal. Broken ground somewhere.

Recheck all connections making sure to twist the RCA head as you install it so oxides will be worn off.

Consider what may have changed in the environment regarding electrical devices, motors, magnetic sources. Ensure signal and speaker wires as ar not running are as non-parallel to any power cords as practicable.

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

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.

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.

I have connected the subwoofer to the pre-amp out

One of two things may be going on.

The amp has a fuse mounted on the PC board. The fuse may be blown.

The speaker may be bad. that may have blown the fuse.

You can test the speaker with a "D" battery.
Take the amp section out of the back, disconnect the speaker leads.
Touch the speaker leads to the poles of the battery. it should make a little thump and the cone should move freely.

Contact Velodyne for service.


I just bought a KEF PSW2500 subwoofer and am trying to connect it to a Yamaha v663 receiver. However, I went from a subwoofer pre-out 1 to the right line in on the sub. I don't hear any sounds from the...

HI,go into the yam setup menu and make sure you have the sub turned on and cross over set to about 80hrtz if this suits your speakers,set sub level to about -5 on amp and say half way on the sub,this should work if not pull out sub cable at amp and touch the end,you should get a hum,if not you may have no power,faulty cable or sub.
PS>make sure you are pluged into the sub PRE OUT and NOT the six channel in.
Hope this helps.

How to connect pioneer reviever to velodyne subwoofer

Look for the sub pre out on the back of your amp and connect a sub cable to this and next to the LFE or phono type input on the back of the sub ,if it has two inputs left and right pick the left side ,set the cross over to suit your system and speakers,if you are not sure set the cross over to 80 hertz,this is a thx standard.
hope this helps.

Connecting subwoofer to receiver.

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