Kef PSW2000 Sub schematic required - Page 2 - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 27th January 2008, 07:30 PM   #11
AKN is offline AKN  Sweden
No snake oil
diyAudio Member
AKN's Avatar
Join Date: Aug 2005
Location: In the middle of Sweden
Send a message via MSN to AKN
Originally posted by Roar Malmin
Hi guys,

The KEF sub amps has some serious built-in problems. I will address them later next week. Looking at the schematics will not help much in this context.

I'm curious and restless…
/ Anders
  Reply With Quote
Old 28th January 2008, 03:52 AM   #12
mxp3000 is offline mxp3000  United States
diyAudio Member
Join Date: Jan 2008
Default Kef PSW 2000 Schematic

Hello Everyone,

Can anyone help me obtain a KEF PSW 2000 schematic? Any help would be greatly appreciated. I am a new user so I cannot send emails yet.

Thanks again in advance.
  Reply With Quote
Old 4th February 2008, 04:22 PM   #13
diyAudio Member
Join Date: Feb 2008
Default Schematic


I also need a copy of the PSW2000 service manual - I would appreciate it if someone could send me a copy at

  Reply With Quote
Old 4th February 2008, 08:22 PM   #14
diyAudio Member
Join Date: Feb 2008
Thanks for the quick e-mails (Zak and Anders) - the manual will be very useful.

Thank you again,
  Reply With Quote
Old 5th February 2008, 10:41 AM   #15
diyAudio Member
Join Date: Jul 2006
I will try to address most of the problems with this unit. As you know, the amp is located inside a plastic box. The temp has been measured to be over 80C. The standby on/off function works only on the speaker relay, the amp is always powered, hence the amp is always cooking and shortening the life of the components. Replace C59,60 with same rating. Relocate R 143,144 with the aid of flying leads. Increase wattage from 2W to 5W on R148,149 and R141,142 to lower resistor surface temp. Q18, 19 are to be replaced by BD139,140, and attached to the main heat sink. Drill holes and use screws. Remember mica. C42,43, replace with PP caps. Relay are to be replaced with Omron G5LE1-24, rated at 85C. Replace C54,55 with same type, only 105C. Same goes for C52.
Any questions? Just ask.

  Reply With Quote
Old 8th February 2008, 09:56 AM   #16
diyAudio Member
Join Date: Feb 2008
I would also like a copy of the service manual for the Kef PSW2000 sub. I've just joined so cannot accept a PM but you can email it to

  Reply With Quote
Old 13th February 2008, 01:16 AM   #17
cov. is offline cov.  United Kingdom
diyAudio Member
Join Date: Feb 2008
Hi everyone

Now I have to start my adventure with psw2000 because is gone
I have been ordered new caps.
Please could someone send to me one copy of schematic for this sub? Will be really usefull...
My email

  Reply With Quote
Old 18th February 2008, 11:43 AM   #18
gicapi is offline gicapi  Italy
diyAudio Member
Join Date: Feb 2008
Hi everyone!

The auto power-on feature of my KEF PSW2000 has gone. The subwoofer is always on, the LED is always green.

Can anyone send me a PSW 2000 schematic?
My mail is

Thanks in advance!
  Reply With Quote
Old 23rd February 2008, 04:07 PM   #19
dorje is offline dorje  United Kingdom
diyAudio Member
Join Date: Feb 2008
Angry Instability problem on KEF PSW1000

I have been given a KEF PSW1000. It has a low level instability problem manifesting as a rough burbling noise/tone. This is audible when there is no input or on quiet passages in the music.

It gets worse after the amp is on for a period so may be heat related.

Shorting out the line inputs has no effect.

I would be grateful for any help.

Would the PSW2000 manual mentioned last month in this post be useful to me. I would appreciate a copy.

My e:mail is
  Reply With Quote
Old 24th February 2008, 10:54 AM   #20
dorje is offline dorje  United Kingdom
diyAudio Member
Join Date: Feb 2008
Default Wrong e:mail address - last post

Just noticed that my last post has incorrect e:mai
it is

Sorry if this has caused any trouble.
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Linn Intek Schematic required burbeck Solid State 49 3rd March 2015 12:24 PM
Schematic for Klipsch Sub 10 Required. lubbie Subwoofers 1 5th June 2009 07:14 PM
sony FH-B711 schematic required. prashbh Everything Else 0 7th March 2009 03:05 PM
c audio st 600 schematic required..... fabiodord Solid State 0 27th February 2009 04:05 PM
Marantz PM 440 and PM 351 Schematic required Krokotam_ Solid State 0 22nd October 2008 07:36 AM

New To Site? Need Help?

All times are GMT. The time now is 06:25 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2