Question about KEF Audio 30B Speaker

Open Question

Fuse holder for Kef 30b..

Looking for the fuse holder for the back block. ANy ideas where I could find, KEF was worthless a couple of years ago.


Rich Fischer

Posted by on


5 Suggested Answers

  • 2 Answers

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

a 6ya Technician 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 repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 242 Answers

SOURCE: Replacement KEF Coda III TWEETER Type SP1087

Go here and find a nice substitute. Many to choose from and it may be better to purchase a pair of them rather than have mis-matched ones. They should be inexpensive enough for you, as low as $2 up to $480. You just need the size of the mounting hole to find a replacement though.

Posted on Nov 21, 2008

  • 1 Answer

SOURCE: 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.


Posted on Dec 27, 2008

  • 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:-

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

  • 6694 Answers

SOURCE: My Kef Subwoofer model PSW

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.

Posted on Jul 16, 2011

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Kef htb2 subwoofer not working plug fuse ok sub fuse ok is there an internal fuse

If you have external fuse there will be none internally. Chances are you have blown the amp if power is confirmed to be getting into the unit and there is no sound.

Sep 16, 2017 | KEF Audio Players & Recorders

1 Answer


Check your grounding and make sure to remove any high voltage items around it or possibly crossing over your low voltage lines.

Feb 10, 2013 | KEF Audio 30B Speaker

1 Answer

Loud buzzing from Kef PSW1000 Subwoofer

yes. A good idea. Kill power to the sub, then unplug and remove everything from the sub. go ahead and plug it in again and check for buzzzz.
That is test one. if you have buzz still, its the sub assembly. bad luck, but not impossible. If the buzz is gone its one of the signals to the sub. They can produce a buzzz without any signal coming from your stereo equipment. Replace the feed line, enjoy! BTW...Kef sure does sound clean. good choice.

Nov 09, 2009 | KEF Audio PSW 1000 Subwoofer

1 Answer

KEF PSW 3500 No Power, Spark in back when plugging in.

I have a 3500 and after 2 months it failed. I have an electrical engineering background but I am not a tech. I noticed that that the design has some small capacitors that lay right beside some rectifiers on the power supply. The rectifiers heat up the caps and they blow. My brother in law is a tech and replaced and upgraded the caps, moved them away from the heat source and it seemed to solve the problem. I don't know how the amp would survive without these fixes. My other option was going to buy a separate subwoofer amp for $200 because I like the rest of the unit. I bought a Bryston 4B from him for 500 bucks and he threw the repair in for free.

Oct 20, 2009 | KEF Audio PSW 2500 Subwoofer

1 Answer

KEF Speaker Sticky

My Dad had the same problem. KEF admitted it was a paint problem and replaced the speakers.

Sep 22, 2009 | KEF Audio KHT 2005.2 System

2 Answers

KEF Subwoofer PSW2010 (KHT2005.2) - No power

chik power sours first
thaen chik transformer inside
u will see it burned if so chang it

Aug 18, 2009 | KEF Audio KHT 2005.2 System

1 Answer

KEF Subwoofer AV1 and KEF Activator. Need specifications

Unit is now 12 years old min. and no longer state of the art.... i offer $400

Jan 22, 2009 | KEF Audio AV1 Speaker

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.


Dec 26, 2008 | KEF Audio PSW 3000 Subwoofer

2 Answers

Kef 100

send me your email address and I will send you some files which include firm ware upgrade which might fix this.

Apr 27, 2008 | KEF Audio KIT100 System

1 Answer

Kef Kit 100 Subwoofer Buzz

i got the same buzz problem

Oct 26, 2007 | KEF Audio KIT100 System

Not finding what you are looking for?
Audio Players & Recorders Logo

Related Topics:

63 people viewed this question

Ask a Question

Usually answered in minutes!

Top KEF Audio Audio Players & Recorders Experts


Level 3 Expert

5309 Answers


Level 3 Expert

3289 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