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This forum has been set up to facilitate discussion of 1970s KEF speakers and drive units. The owner of the Forum has no connection with KEF Audio.
 
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  Topic: Seven years later.....
andy ashworth

Replies: 9
Views: 4979

PostForum: DIY with KEF drive units   Posted: Sun Feb 20, 2011 1:49 pm   Subject: Seven years later.....
Hello,

Thanks for the tip but I'm not really a fan of MDF. I favour the 'lossy' BBC approach of relatively thin but heavily braced and damped Baltic birch plywood. I checked out the design paper fo ...
  Topic: Seven years later.....
andy ashworth

Replies: 9
Views: 4979

PostForum: DIY with KEF drive units   Posted: Fri Feb 18, 2011 4:43 pm   Subject: Seven years later.....
Thanks for the link Proffski, I'll be looking through the site with interest!

Well, the drivers are now here and I've really got to take my hat off to the seller. All units appear to be in good ord ...
  Topic: Seven years later.....
andy ashworth

Replies: 9
Views: 4979

PostForum: DIY with KEF drive units   Posted: Mon Feb 14, 2011 12:35 pm   Subject: Seven years later.....
I have indeed seen the coffin but unfortunately, I don't have the space for one!

I plan for the B139 enclosures to act as stands so in effect, it will be like building something similar to the Refe ...
  Topic: Seven years later.....
andy ashworth

Replies: 9
Views: 4979

PostForum: DIY with KEF drive units   Posted: Mon Feb 14, 2011 10:27 am   Subject: Seven years later.....
Thanks Proffski, that's an excellent link and very close to what I intend to build Very Happy .

I've always liked the idea of putting the crossover before the amplifiers and this is one avenue I will look ...
  Topic: Seven years later.....
andy ashworth

Replies: 9
Views: 4979

PostForum: DIY with KEF drive units   Posted: Sun Feb 13, 2011 1:02 pm   Subject: Seven years later.....
Hello Everyone,

I don't know if there is a prize for the longest time between posts but I'd like to put my name forward Laughing .

Back in 2004, I was looking to build a pair of B139 based subwoofe ...
  Topic: DIY LS3/5A subwoofers
andy ashworth

Replies: 10
Views: 6585

PostForum: DIY with KEF drive units   Posted: Tue Mar 16, 2004 12:47 pm   Subject: DIY LS3/5A subwoofers
Thanks Terry, I must have missed that one when I looked a while back. It even looks like the low-pass section is available seperately so it could be ideal. I'll be contacting Falcon and picking their ...
  Topic: DIY LS3/5A subwoofers
andy ashworth

Replies: 10
Views: 6585

PostForum: DIY with KEF drive units   Posted: Mon Mar 15, 2004 5:30 pm   Subject: DIY LS3/5a subwoofers
Well I finally managed to get hold of some B139s (SP6167) for a 'bargain' price (4 for 80 on ebay). All that remains is to find a suitable set of plans for the cabinets and crossovers. KEF recommend ...
  Topic: DIY LS3/5A subwoofers
andy ashworth

Replies: 10
Views: 6585

PostForum: DIY with KEF drive units   Posted: Thu Dec 04, 2003 10:55 am   Subject: DIY LS3/5A subwoofers
Cheers, I am now watching them.

Andy.
  Topic: DIY LS3/5A subwoofers
andy ashworth

Replies: 10
Views: 6585

PostForum: DIY with KEF drive units   Posted: Wed Dec 03, 2003 7:34 pm   Subject: DIY LS3/5A subwoofers
Thanks for the info, I'll keep my eyes open for a good pair of SP1044s.

I'll post my experiences with the project 'as and when'.

Best regards,
Andy Ashworth.
  Topic: DIY LS3/5A subwoofers
andy ashworth

Replies: 10
Views: 6585

PostForum: DIY with KEF drive units   Posted: Wed Dec 03, 2003 12:41 pm   Subject: DIY LS3/5A subwoofers
I have spoken to Falcon and have also contacted the people selling items through their small ads section. As yet I have had no success.

The market for old KEFs appears to be dominated by a few indi ...
  Topic: PERFECT B 139 FOR SELL !!!
andy ashworth

Replies: 3
Views: 3322

PostForum: DIY with KEF drive units   Posted: Wed Dec 03, 2003 12:13 pm   Subject: PERFECT B 139 FOR SELL !!!
Cheers Terry, he hasn't replied so I suspect he will have sold them. Any information will be very gratefully received.

Regards,
Andy.
  Topic: PERFECT B 139 FOR SELL !!!
andy ashworth

Replies: 3
Views: 3322

PostForum: DIY with KEF drive units   Posted: Thu Nov 20, 2003 3:36 pm   Subject: B139
Have you sold them yet ?
  Topic: DIY LS3/5A subwoofers
andy ashworth

Replies: 10
Views: 6585

PostForum: DIY with KEF drive units   Posted: Thu Nov 20, 2003 3:31 pm   Subject: DIY LS3/5A subwoofers
Does anyone know where I can source NOS B139 and B200 drivers for a project ?

I would consider very good used drivers if available.

I know they are often available on ebay but it seems a little ...
 
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