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Subwoofer cuts out

I have a Panasonic receiver that is attached to a set of Sony surround speakers. The subwoofer has cut out for years, and the only way I can seem to fix it is by unplugging the audio input from the subwoofer, tapping it on the input jack, and re-inserting it. It almost needs to get rid of static or something. I`ve recently purchased a new subwoofer (Precision Acoustics) - same problem. Cuts out after a day or so.

Suggestions?

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  • Jon Tc Mead
    Jon Tc Mead Apr 08, 2008

    it was playing music, when it has just cut out but it still has power but wont play music through speakers or sub woofer don't know what to do, any suggestions

  • Anonymous Apr 27, 2009

    I have the same problem, except it will only work for about 5 minutes or so. I think the cable that sony provides is very cheap and can be faulty. I don't think that it's a problem with the receiver because it's consistently putting out the sound, it's just the metal contacts between the cable and the sub that's causing the cutting out. It could be the reverberations that vibrate the cable out of contact. I will try to get a higher quality audio cable which will fit more snug on the sub.

  • Anonymous Mar 14, 2014

    There seems to be only 1 output from the subwoofer and this set did not come with any wires to attach to the receiver. the other speakers can use monster cable wires. what can I use to attach it.

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Its due to the damaged pin in which you r inserting the subwoofer pin!

Posted on Dec 08, 2007

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Hello I have another question but this is containing my back up surround sound receiver til I can find a Sony receiver that I like. Ok this receiver is a AV receiver model ht-r420 onkyo surround sound...


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The HTR-420 has only a single subwoofer output. It is the socket on the lower left corner. The other subwoofer socket is part of the multi-channel input.

Because of the age of the 420, it comes from a time when optical and coax connections were not so common and DVD players had 6x phono/RCA sockets to send out the surround signal in analogue format. The multichannel input is for sending a signal in to the amp, and not for getting a signal out. That's why the sub doesn't get a signal from that socket. Use the proper subwoofer out. That's what it is there for.

Speakers A+B
The 420 was designed to run Speakers A+B together if required. However, you must observe the minimum impedance loading if you connect up two sets of front speakers and run them simultaneously.

The minimum Impedance for each set of front speakers is 8 Ohms. If you're recycling old surround speakers from a Home-Theater-in-a-Box system, or the speakers have no labels for impedance on the backs then you can be fairly sure they are not 8 Ohm. That could be the problem.

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Only subwoofer works at high volumes


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The Jamo speakers need an AV Receiver to drive them properly. The TV doesn't have the correct outputs nor does it have the power required.

The Jamo kit consists of a powered subwoofer ans 5 small surround speakers. Each surround speaker needs to be powered by the speaker output from an an AV Receiver. The subwoofer should also be connected to the receiver, but the connection is a phono/RCA lead from the receiver's "Sub Out" socket.

Your TV connects to the AV receiver via the Optical out.

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The subwoofer is connected, but no sound


Check that the subwoofer is set to on and that the front and center speakers are set to small not large. It will be shown how to do this in the owners manual, if you don't have one it's available online. Search :sony service.

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I have a subwoofer with standard speaker wire connection, how to I attach to a receiver with a subwoofer cable?


The Subwoofer is Likely Passive....meaning no amplifier is within the enclosure itself....the incompatible connectors mean you cannot connect the subwoofer itself to your surround sound system.

look for a Suitable stand-alone (1 Channel) Amplifer with sufficent power.....connect the RCA Imputs (subwoofer cable) to the Recievers RCA subwoofer output....then connect the amplifier's output to the the wire going into the subwoofer enclosure....if there is a plastic connector simply cut it off and strip the wires down a sufficent lenght....then secure the wires to the output of the amplifier.

if you do this make sure you know the ohm rating of the subwoofer and the minimum ohm rating of the amplifier your using.

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How to switch on Sub?


surround and subwoofer may not work if there is an additional graphic equaliser operating.
1. check in your receiver speaker setting ensure your speaker setup doesn not have subwoofer set to NONE. this will block any signal to your subwoofer socket.
2 when you select your surround sound setting setup, ensure you select the speaker mode you want, if there is a multicontrol knob, cycle through the choices
select subwoofer mode and set it to yes.
if you have set-up small speakers S in your speaker settings then it could be that subwoofer is set to yes automatically if you have large speakers L, subwoofer has to be set additionally in the subwoofer setting.
3 test subwoofer on alternative device to test it is working ok
consult manual on enjoying surround sound and adjusting the speaker settings.

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the difference is the "same speaker connections"
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Panasonic av control receiver sa-he200


On any 5.1 system without 2 zone capabilities when you press speaker "B" the receiver uses the rear channel amplifiers to send signal to the remote speakers. As a result the receiver cannot output signal to both the rears and the remotes at the same time.

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Here's how you hook them up:

- The left and right front channels from your receiver terminals should go to the terminals on the subwoofer marked 'From Amplifier'
- Your left and right front speakers are then connected to the subwoofer terminals marked 'To Speakers', they do not connect directly to your receiver.
- Your center speaker is connected to your receiver terminals marked 'Center'
- Your rear speakers are connected to your receiver terminals marked 'Surround'

That should get you up and running. If the bass isn't good enough with the passive subwoofer, you can get a decent powered subwoofer like the Velodyne VX-10 for about $150 and 'kick it up a notch'. Good luck and enjoy....

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The easiest solution to use your subwoofer is to buy an amp for it. Any old stereo receiver from a garage sale will probably do just fine.
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  3. make sure the cheap receiver's volume is all the way down. turn your Sony up to about the loudest you'll listen to it. turn up the subwoofer amp until it's loud enough to sound good.
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You can even now turn off your subwoofer / adjust the volume easily now!

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