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KEF 103.2 Parts

 
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Draigone
Introductory Contributor


Joined: 21 Sep 2003
Posts: 2
Location: Los Angeles

PostPosted: Sun Sep 21, 2003 7:27 pm    Post subject: KEF 103.2 Parts Reply with quote

I recently moved to CA and in the move one of the drivers was damaged.
Where can I find a new 8" woofer for this unit?
Can I use a pair of 8" form the model 304? It's the closest thing I've found on e-bay.
Can anyone help with a source for parts and/or repair?
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terry
Senior Contributor 200+


Joined: 22 Apr 2003
Posts: 262
Location: UK

PostPosted: Sun Sep 21, 2003 10:27 pm    Post subject: Reply with quote

Welcome to the SpeakerTalk Forum.
What is the nature of the damage? Can you remove the damaged drive unit and determine the drive type eg B200 SP1075? You will find it printed on the rear of the drive unit.
Terry
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Draigone
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Joined: 21 Sep 2003
Posts: 2
Location: Los Angeles

PostPosted: Sun Sep 21, 2003 11:10 pm    Post subject: Reply with quote

B200 SP1075 exactly. (5ohm)
The coil seems to be off axis. Upper mid range distorts. Seems like a rubbing of the coils against the magnet. (if that makes sense)
If you touch the rubber suspention on the bottom and push up slightly against the cone the distortion stops.
--Yes, I know I shouldn't be doing that!
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terry
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Joined: 22 Apr 2003
Posts: 262
Location: UK

PostPosted: Mon Sep 22, 2003 8:51 am    Post subject: Reply with quote

Have you taken the actual drive unit apart (magnet from coil) and refitted it? Worth a try. I suspect that this should be an easy process with just a few bolts to unscrew.

Are these the drive units?

http://www.allansonline.com/Anatomy/KEFDocuments/KEFGermanGallery/pages/p37.htm

If so I helped someone trace a set through eBay just a few weks ago:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=3042163857&category=3276

He wanted them for his Farady Sirens

http://www.allansonline.com/PersonalKefTreasures/JamesTobin/JamesTobin1.html

I am sure a set will come up in due course. I have listed a few speakers which used them at:

http://www.allansonline.com/Anatomy/SpeakerSystems/AnatomySpeakerSystems.html

Terry
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Jake
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Joined: 21 Mar 2004
Posts: 5
Location: The Netherlands

PostPosted: Sun Mar 21, 2004 9:55 pm    Post subject: Reply with quote

Draigone wrote:
B200 SP1075 exactly. (5ohm)
The coil seems to be off axis. Upper mid range distorts. Seems like a rubbing of the coils against the magnet. (if that makes sense)
If you touch the rubber suspention on the bottom and push up slightly against the cone the distortion stops.
--Yes, I know I shouldn't be doing that!


Until this afternoon I thought I was the only one with this problem. If I push the same spot you mention the distortion indeed stops. There must be a reason Confused
In a final attempt to solve the problem I took out the driver, laid it downwards (on its magnet) and pressed on the metal chassis with some force trying to get bottomside a little bit backwards. "Yes, I know I shouldn't be doing that", but it's work or bin Sad

After placing it back the distortion was gone. Let's see if it stays this way. Makes me wonder if a construction with three screws is a good one.
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terry
Senior Contributor 200+


Joined: 22 Apr 2003
Posts: 262
Location: UK

PostPosted: Mon Mar 22, 2004 3:15 pm    Post subject: Reply with quote

Unscrew drive unit and replace oriented differently. I suspect that the rubbing is due to sagging. Counteract sagging by replacing unit upside down. This is of course difficult with 3 screw unit.
Terry
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Jake
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Joined: 21 Mar 2004
Posts: 5
Location: The Netherlands

PostPosted: Mon Mar 22, 2004 5:27 pm    Post subject: Reply with quote

terry wrote:
Unscrew drive unit and replace oriented differently. I suspect that the rubbing is due to sagging. Counteract sagging by replacing unit upside down...


I thought the cone itself was off axis. Tried counteracting for 2 months by placing the hole speaker upside down, but that didn't help. Additional warm invirement didn't help either. I'll keep the speaker(s) upside down for a while. See if distortion stays out.
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terry
Senior Contributor 200+


Joined: 22 Apr 2003
Posts: 262
Location: UK

PostPosted: Mon Mar 22, 2004 6:24 pm    Post subject: Reply with quote

I suspect that the problem has been caused by sagging. Sad
If it took 20 years to sag it is unlikely that it will be restored to original position in a few weeks. Confused
Terry
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