Question about Polk Audio PSW-550 Subwoofer

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My psw-550 quit working, how do i troubleshoot the problem ?

Is a new amp available or can it be repaired ?

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COBOLT PSW-100 SUBWOOFER not playing very loud


What amp/receiver are you using? Have you plugged the sub woofer cable to LFE output on the amp? Are you using the right subwoofer cable? Have you enabled the amp to use the subwoofer?

Dec 09, 2013 | Speakers & Subwoofers

1 Answer

Which amplifier plate can use for Polk Audio PSW 1000


call parts express tell them your problem and they do have a plate amplifier that will work actually it's a better amp with more power.

Jun 14, 2012 | Polk Audio PSW1000 Subwoofer

1 Answer

Recently acquired a PSW-D112 Sub in good shape and also still have a PSW-D110 sub that has not really ever been used. I have been reading all the posts about these models amplifiers crapping out because of...


Or you could prepare for the worst but live in the moment and wait til it dies. You have time on your side. Plus, you could always use it as a passive sub if you have a separate amplifier. I did that with a Klipsch KSW-12 when my second copy blew its amp.

Apr 10, 2011 | JBL PSW-D112 Speaker

1 Answer

Have a PSW-D112 sub woofer that needs a new amp. Repair facility says original amp took a catastrophic power surge and it's toasted. JBL says repair parts not available. Please advise on source for...


Go to Parts Express and buy the Bash 300w digital subwoofer amp.It fits almost exact except it is one inch shorter.Just use mdf to fill the space and this amp will outperform the original.I have done this and it's not really difficult,pretty straight forward.
They usually sell for around $149,but they have sales often around $99.Good luck.

Oct 28, 2010 | JBL PSW-D110 Speaker

2 Answers

When my jbl psw-d112 is on it will run just fine for a few min then it will sound like the speaker is blown. the green power light that is next to the vol level knob starts to turn red. What does this...


That model is known to have issues with the amps.Your problem is caused by a couple of components on the board shorting out.If you pull the amp out you will find on the large board behind the speaker terminal a couple of burned components.

The easiest fix is to buy a Bash 300w amp from Parts Express and replace the original amp.The Bash amp fits pretty well except that it is about an inch shorter.You can fill the hole with some mdf and have a sub that actually performs better than the original and with less heat build up as it is digital.Hope this helps,it's not complicated really.

May 01, 2010 | JBL PSW-D112 Speaker

4 Answers

I have a Kef PSW 2500 that emits a loud buzz when on. I pulled the amp, but I'm not sure if its the speaker or amp. What should I be looking for the speaker outputs from the AMP? How can I tell if its a...


Have just repaired a similar problem with a KEF 2500 - relay was chattering at 50 Hz rate, buzz in speaker output.

Problem was caused by overheated / dried out Electrolytic filter cap (C52 - 47uF 63V) on the relay coil supply feed.
The overheating is caused by adjacent power supply dropping resistors which run very hot due poor design of power supply.

A service manual for a similar model is available at following link, refer to power supply section:-
http://www.eserviceinfo.com/downloadsm/35375/kef_psw2000.html

To replace,
1) remove chassis from speaker cabinet (8 screws), disconnect red/black speaker wires from main PCB spade connectors.
2) Remove 4 screws attaching main pcb heatsink assembly from face panel - lift assembly from faceplate (a bit messy , much heartsink compound between mounting faces)
3) unplug the AC 3 pin connections adjacent to the large capacitors and the 3pin connector on end of pcb (near C52), then roll assembly over the top of the audio sub-board to access underside of pcb.
4) solder connections to C52 is accessible at edge of board without further dis-assembly.
Take extreme care replacing C52, as the circuit board is of poor quality, (usual domestic electronics quality) being single sided copper without plated through holes.
The board is already heat damaged by heat buildup from power supply resistors, so the track will most likely lift and crack when disturbed- to counter this problem link the +ve capacitor pigtail to an adjacent solder pad on the same track.
Assembly is reverse of above, take care to preserve/ensure minimum disturbance of heatsink compound.

Nov 29, 2009 | KEF Audio PSW 2500 Subwoofer

2 Answers

I have a KEF KHT 2005.2 Subwoofer that does not produce sound any more, it makes a slight pop sound when i switch it on and thats it, no further sound. The system is about 5 years old but has not had a lot...


The KEF-Subwoofer range (from the PSW1000 up to PSW 3000?) have some built-in flaws in the electronic design.

I just fixed my PSW2000 working along the repairing instructions from:

http://lug.demon.co.uk/kefrepair/

Works! Costs have been about 35,- Euro for spare parts and some (too many) hours of work. If you are used to electronics and soldering you may make it in 2 hours.

Nov 07, 2009 | KEF Audio KHT 2005.2 System

2 Answers

JBL PSW-D112 Speaker fuse blow immediately after replaced


The fuse is designed to protect the circuit and prevent fire. When a fuse blows it is because it is getting to much current through it.
In some cases it could be because you replaced the fuse with one that did not meet the specs of the required fuse, there are different types of fuses and you should always replace with exactly the same type of fuse.

Do not replace with a higher Amp fuse, you could end up frying the amp at least. It's not a safe thing to do since there is an off chance of fire from using the wrong fuse.

If you have the right type of fuse installed and it is still blowing, then refer the unit to a qualified service center for repair, or look for a new replacement Amp.

john


Jun 27, 2008 | JBL PSW-D112 Speaker

1 Answer

JBL PSW D112 Distorted Sound


SYLVAN.

THE FILTERS /FILTRES ON YOUR SPEAKERS ARE TORN OR DAMAGED. IF YOU STILL HAVE WARRENTY ON THEY FROM JBL YOU CAN RETURN THEM FOR NEW ONES, PROVIDING THAT IS COVERED. IF NOT. I PERSONALLY RECOMMEND YOU BUY YOU SOME NEW ONES. REPAIRING WOULD BE OK, BUT IT WILL HAPPEN AGAIN VERY QUICKLY.

Thank you. Let me know what your decissions are

Nov 22, 2007 | JBL PSW-D112 Speaker

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