Question about KEF Audio PSW 2500 Subwoofer

Open Question

Kef audio psw no output - KEF Audio PSW 2500 Subwoofer

Posted by Anonymous on

5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 534 Answers

SOURCE: I have a Kef PSW 2500 that emits a loud buzz when

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.

Posted on Apr 28, 2010

  • 2 Answers

SOURCE: I need help with the

Manual posted at the following link:
http://lug.demon.co.uk/kef/psw2150_user_manual.pdf

Posted on Dec 05, 2010

  • 1 Answer

SOURCE: My KEF (PSW 2150) ruffer speaker buzzes even with

Your amplifier is bad. I sent mine to KEF in NY and they fixed it for $100 US.

Posted on Dec 14, 2010

AJIN G
  • 6694 Answers

SOURCE: My Kef Subwoofer model PSW

Hi,
First of all you need the service manual for the same. That i have with me. If you can sent your email id through fixya will sent the same to you. Just read the service manual and watch the circuit diagrams. There are different voltage measurement points.You have to check the power supply first. It will be very easy to both of us if you also have the service manual. if so i can assist you in the Wright way. It is not possible to set the service manual through fixya because its a large pdf file.
ok

Posted on Jul 16, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My Kef Subwoofer model PSW 1000.2 is not producing any output, before all this I got a constant noise from it and now there's no noise at all even though all the settings on my amplifier (Sony...


Hi,
First of all you need the service manual for the same. That i have with me. If you can sent your email id through fixya will sent the same to you. Just read the service manual and watch the circuit diagrams. There are different voltage measurement points.You have to check the power supply first. It will be very easy to both of us if you also have the service manual. if so i can assist you in the Wright way. It is not possible to set the service manual through fixya because its a large pdf file.
ok

Jul 16, 2011 | KEF Audio PSW 1000 Subwoofer

1 Answer

My KEF (PSW 2150) ruffer speaker buzzes even with no input connection?


Your amplifier is bad. I sent mine to KEF in NY and they fixed it for $100 US.

Dec 08, 2010 | KEF Audio PSW 2150 Speaker

1 Answer

Hello ! I'm not sure how to connect my kef psw 2500 sub to my yamaha amp. I've got a subwoofer out on my amp but there's 4 inputs on the sub and I don't no which one to use ! Please help as getting...


Just for clarity, I need to explain what the four inputs are on the KEF subwoofer. There is a left and right RCA input which is the input signal to the subwoofer and there is a left and right RCA output which is the High Pass output from the subwoofer.

On the back of the Yamaha receiver, you said you have a subwoofer output. This output is most likely the mono subwoofer part of the home theater system and can be used if you like. The left right signal input into the KEF is summed into mono so if you only connect one channel you will basically reduce the signal level by 1/2 (-3dB) but it will work fine.

Alternatively, if your Yamaha receiver has monitor out and monitor in, you can run the monitor output signals to the subwoofer and you can then run the high pass outputs from the subwoofer back to the monitor in. This will give you the subwoofer and provide a smoother signal matching with your audio system.

It is not always easy to connect the subwoofer up to an integrated receiver/home cinema system using the high pass channels of the subwoofer as you don't always have access to the analog output and input of the front channels. In this case, just use the Subwoofer output or just the monitor out only.

I hope this solution is helpful.

Dec 03, 2010 | KEF Audio PSW 2500 Subwoofer

1 Answer

Im having trouble with connections from kef psw 1000 sub to onkyo tx sr506 amp. sub is making a bit of a humming noise but not getting any proper sound through. dont know what im doing wrong. can anyone...


Have you got the sub defined to the Onkyo correctly? Try conencting the sub's input to one of the Tape Out connectors and play some FM through it. That will prove if the sub is alive. The nwe can troubleshoot the correct failing device.

May 03, 2010 | KEF Audio PSW 1000 Subwoofer

1 Answer

OVERLOAD


First of all the KEF is a powered sub which means that it wants a line level signal NOT a speaker level. Send the signal from a tape output or pre-amp output to the sub input. The overload is because the impedence load for the speaker output is too low and looks like a short to the amp. Continued attempts to connect the system as described will result in damage to the output section of the amp.

Please let me know if you need more info.

Dan

Feb 03, 2010 | Technics SA-DX750 Receiver

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

1 Answer

I thinking of bying this Sub, but I have an old Yamaha RX-V660 receiver. Can I conect the Sub to that receiver and how?


Not very easily. Your receiver has no Sub Output. You really want a sub that supports hi-level inputs such as this: http://www.parts-express.com/pe/showdetl.cfm?Partnumber=300-633
Then you can run your front speakers through the sub.
The Kef site hints it may be possible to run high-level inputs to that sub by using RCA adapters.

Aug 27, 2009 | KEF Audio PSW 1000 Subwoofer

1 Answer

I'm looking for a KEF PSW 3000 manual download


Try this website for KEF. They have all the manual downloads and I fixed my circuit board from calling them and asking for advice for free. The number or email to get a reply is here. Happy Holidays.

Mike

http://www2.kef.com/us/support/warranty

Dec 26, 2008 | KEF Audio PSW 3000 Subwoofer

Not finding what you are looking for?
KEF Audio PSW 2500 Subwoofer Logo

Related Topics:

35 people viewed this question

Ask a Question

Usually answered in minutes!

Top KEF Audio Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5056 Answers

Steve

Level 3 Expert

3287 Answers

Greg Cann
Greg Cann

Level 3 Expert

1114 Answers

Are you a KEF Audio Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...