Question about Jamo D 4SUB Subwoofer

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Jamo SW 1008 powered sub has power indicator on but no sound

Tried setting in another source of input signal but no response not even a hum. Normally, you will hear and feel a hum or vibration from the speaker when you play around with its controls even when its disconnected from a source.

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4 Suggested Answers

leethedeuce
  • 4472 Answers

SOURCE: subwoofer problem

Sound like a component inside the sub is overheating. Most likely will need to be replaced.
Thanks,
Lee

Posted on Jun 18, 2008

  • 19 Answers

SOURCE: sound faliure

If the subwoofer has its own power cord seperate from the rest of the audio system, the internal amplifier could be fried or u have a loose connection inside the box

Posted on Apr 03, 2009

  • 2 Answers

SOURCE: my sw 15 sub woofer is making aloud humming noise

Most likely, you could feel the fan if it was that, but it could also be the the cord that connects the Sub to the main console, much like guitar feedback on an amp

Posted on Aug 19, 2009

  • 137 Answers

SOURCE: Jamo Sub with no power

THE IS A FUSE INSIDE THE UNIT,YOU MAY WANT TO CHECK THAT.IF IT BLOWS AGAIN WHEN TURNED ON YOU HAVE SHORTED MOSFETS. THEY ARE LIKE TRANSISTORS.

Posted on Apr 20, 2010

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I have bought an optical fibre cable to connect from my jamo a305 to my new sony nx810 tv and im getting a buzzing sound, there are 2 optical fibre outputs on the back of the amp, which one do i connect it...


Have you looked at the manuals?

http://www.retrevo.com/search?q=sony+nx810

A TV won't run external speakers directly. Besides, the TV-related audio should originate at, say, the cable Box, and go straight to your (presumed) AV receiver for the best possible decoding and reproduction.


Buzzing is an analog phenomenon and is NOT carried by optical cable in any case.

Buzzing is usally AC line noise leaking into an un-shielded cable somewhere or a floating ground. If the AC plug is reversible, try that. Sometimes the buzz is from an attached device. Make sure all audio cables are plugged in tightly at each end and routed away from or at right angles to any power cords and away from other sources of strong magnetic fields like TV's. I've also seen variable track lights induce noise but it's usually minor.

Try rotating the power cord in the wall outlet.

If it still buzzes with no cables or anything external attached there's an internal problem.

Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.

Reverse the cables Left to Right to see if it stays with the cable or the input channel. Follow it back to the source, isolating in the same manner. Eventually you will find the entrance point of the hum. Frequently a cable's ground will oxidize over time and simply removing and reattaching the cable with a twisting motion will re-establish the shield.

May 02, 2011 | Jamo A 305 Main / Stereo Speaker

1 Answer

I have a yamaha yst sw320 subwoofer connected to a yamaha dsp-a595a amp. I recently disconnected my equipment and when i reconnected it im getting a feedback hum/noise through the sub. I've tried...


Subs don't go to a variety of connections on the amp. Let's stop guessing and stick with the prescribed one.

Register and download the manuals for free at retrevo.com

http://www.retrevo.com/support/Yamaha-YST-SW320-Subwoofers-manual/id/320bh340/t/2/

See page E1 regarding placement and safety.

http://www.retrevo.com/support/Yamaha-DSP-A595-Amps-manual/id/319ag821/t/2/

Page 44 - read about "humming".

If you have hum on the sub, is it there with and/or without the input cable attached?

Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.

Mar 02, 2011 | Yamaha YST-SW320 Subwoofer

1 Answer

When my sub is off it hums how can i fix this


Teach it the words ;-)

"OFF"? Turned off, no power?

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Polk-Audio-RM6750-Speaker-Systems-manual/id/2771dj580/t/2/

Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.

Feb 27, 2011 | Polk Audio RM6750 System

1 Answer

My jamo sub 200 & pioneer vsx517 receiver is not working properly


What do you mean that it sometimes doesn't work? It doesn't power on automatically?
Check settings of your receiver - if it has subwoofer output enables and if low frequencies from all channels are directed also to the SUB. By default only the LFE channel (.1) of 5.1 signal input is fed to the subwoofer. So Sub will work in this case only when you listen to 5.1 signal (DVD movie for example), but for radio or stereo music, only front speakers are used. By configuring this bass redirect, you can use subwoofer for all signal types.

Feb 08, 2010 | Jamo SUB 200 Subwoofer

1 Answer

No Sound from Jamo E6 Sub


More likely there is a bad solder connection or a bad connector contact inside the unit, could also be a blown or dried up electrolytic capacitor.

Check the line signal input plugs, if they are soldered directly to the board then check the solder around the pins - if it has circular cracks, you need to resolder the pins.

Also check any other components on the board for such cracks on the pins, including internal connectors, disconnect, clean the pins if necessary and reconnect them.

If any electrolytic capacitors have a bulged top, they are blown and need to be replaced.

It could as well be something else, but your description suggests either a fault at the input connectors or some trouble with the input signal level sensing circuitry (no signal to the sensing circuit may be caused by connectors, no response from the sensing circuit may be caused by bad capacitors or other faulty components in or around that section).

Hope you can find out what it is and fix it...

regards

3rq8 (Triarcuate)

Sep 04, 2009 | Jamo E6SUB Subwoofer

2 Answers

Bought a used Martin Logan Dynamo subwoofer a couple days ago and have a very loud hum when the ac cord is plugged in, even if the speaker is not connected to an audio source. The "hum" can be heard in any...


Neither the amp or the sub have grounded power cords.

I have discovered the ML Dynamo takes about 30 minutes to switch to standby in auto mode.

With speaker level inputs connected to the Onkyo A807 amp, both units powered from the same wall outlet, Dynamo sub on Auto, the sub hums for about half an hour after the Onkyo is switched off, then the sub goes quiet. Not so good.

I connected a bonding wire between the two units on 3_7_09. If I smoked some old audio gear I could just look at that as an opportunity, right?

Works fine. Now I have the ML powered from the wall and working normally.

Jun 30, 2009 | Dynamo MartinLogan Subwoofer Speaker

1 Answer

Sound faliure


If the subwoofer has its own power cord seperate from the rest of the audio system, the internal amplifier could be fried or u have a loose connection inside the box

Mar 29, 2009 | Jamo SUB300BA SUB 300 Powered Subwoofer...

2 Answers

JAMO SUB 650


hi

since it is a powered speaker, probably it just needs a sound signal which you can get from the headphone socket. please double check with someone else.

May 26, 2008 | Jamo D 4SUB Subwoofer

2 Answers

I have no amp for jamo 1060 sub


Dual Voice-Coil
The unique Dual Voice-Coil design allows both left and right channel sound from just one speaker. Simply hook up both the left and the right channels to the special terminals on the speaker. Hook up one channel only, if the speaker is to be used in a conventional stereo set-up.
I found this on jamo site hope that will help you

Mar 15, 2008 | Jamo 1060 SW Speaker

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