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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: KEF 105/3 refoam and a problem
exkefman

Replies: 22
Views: 15677

PostForum: KEF speakers   Posted: Fri Jul 03, 2015 5:00 pm   Subject: KEF 105/3 refoam and a problem
Thank you kefman and speakerguru.

The DQ-10's are my next project. I am going to mirror image them, run new wires, and re-cap the crossovers. Don't think I will do any other modifications.

No ...
  Topic: KEF 105/3 refoam and a problem
exkefman

Replies: 22
Views: 15677

PostForum: KEF speakers   Posted: Fri Jul 03, 2015 9:31 am   Subject: KEF 105/3 refoam and a problem
I fixed it!

Excellent - well done Smile

When I pulled the tweeter the first time I had dislodged the tweeter leads from their glue and the wires were ever so slightly protruding outside the circumf ...
  Topic: KEF Q60 BOOKSHELF SPEAKERS - TWEETERS DIAGNOSTICS
exkefman

Replies: 3
Views: 3895

PostForum: KEF speakers   Posted: Thu Jul 02, 2015 11:13 pm   Subject: Re: KEF Q60 BOOKSHELF SPEAKERS - TWEETERS DIAGNOSTICS
Hi to the Experts.

I wonder if my SP1276 tweeters are faulty as follows:

1. Removed gold-plated strap between HF and LF speaker terminals
2. Connected speaker cables to LF terminals.
3. Played ...
  Topic: Vintage Equipment
exkefman

Replies: 12
Views: 8773

PostForum: Audio equipment   Posted: Fri Jun 26, 2015 3:28 pm   Subject: Vintage Equipment
Tim

I actually thought that Rogers named Ravensbourne after Ravensbourne College of Design and Communication... but joining of communication section and change of name has occurred after Rogers de ...
  Topic: KEF 105/3 refoam and a problem
exkefman

Replies: 22
Views: 15677

PostForum: KEF speakers   Posted: Fri Jun 26, 2015 2:57 pm   Subject: KEF 105/3 refoam and a problem
Hi SG,

It's the "upper" MF unit on the 105/3 that has the issue...so it doesn't have a dust cap....!!
  Topic: KEF 105/3 refoam and a problem
exkefman

Replies: 22
Views: 15677

PostForum: KEF speakers   Posted: Thu Jun 25, 2015 11:06 am   Subject: KEF 105/3 refoam and a problem
Those are excellent suggestions! I will try both!

If the midrange is "blown" can it be repaired?

It does sound more like an issue at specific frequencies/tones. The trumpet at the b ...
  Topic: KEF 105/3 refoam and a problem
exkefman

Replies: 22
Views: 15677

PostForum: KEF speakers   Posted: Thu Jun 25, 2015 12:29 am   Subject: KEF 105/3 refoam and a problem
Hi,

That's a long post.

Glad you've made progress on the re-foam side.

For the "questionable" Uni-Q driver, to eliminate the drive unit, I would just swap the entire front "ass ...
  Topic: Correction to split/moved thread
exkefman

Replies: 3
Views: 2942

PostForum: KEF speakers   Posted: Wed Jun 24, 2015 4:29 pm   Subject: Correction to split/moved thread
Are humidity packets inside the cabinets a good idea? I've got a DIY pair of Q55.2 and would like to save the tweeters.

Hi

There's no need, as we're talking about a production process and allowi ...
  Topic: Vintage Equipment
exkefman

Replies: 12
Views: 8773

PostForum: Audio equipment   Posted: Wed Jun 24, 2015 4:25 pm   Subject: Vintage Equipment
This is incorrect. KEF were using ca adhesives to stick rubber surrounds to chassis and voice coils to bextrene cones when I joined in 1975. NT tweeters were mid 80s.

No probs SG - I bow to your b ...
  Topic: Vintage Equipment
exkefman

Replies: 12
Views: 8773

PostForum: Audio equipment   Posted: Tue Jun 23, 2015 5:24 pm   Subject: Vintage Equipment
Guys, I am following your discussion and enjoying it as I have a few bits in common with your postings.
However, its getting a bit confusing, could you please pretty please continue your must informa ...
  Topic: Vintage Equipment
exkefman

Replies: 12
Views: 8773

PostForum: Audio equipment   Posted: Tue Jun 23, 2015 4:23 pm   Subject: Vintage Equipment
Hi Kimmo,

The TD125 is a great turntable, but it is let down by the original poor turntable mat and the "ringing" platter. the former can be replaced easily, and that can help with the la ...
  Topic: Vintage Equipment
exkefman

Replies: 12
Views: 8773

PostForum: Audio equipment   Posted: Tue Jun 23, 2015 1:07 pm   Subject: Vintage Equipment
Tim

Thank you for offering this nice amplifier... but I got mine rebuilt and this is enough for Armstrong 600 series now. But if you happen to have Mission Cyrus 2, Rogers A100, Ariston RD11 Superi ...
  Topic: Vintage Equipment
exkefman

Replies: 12
Views: 8773

PostForum: Audio equipment   Posted: Tue Jun 23, 2015 2:22 am   Subject: Vintage Equipment
snip...

I got good reminder for this when checking results of my Armstrog 621 rebuild here http://www.classicspeakerpages.net/IP.Board/index.php?showtopic=8432

Best Regards

Kimmo

Hi Kimmo ...
  Topic: KEF Kube
exkefman

Replies: 10
Views: 10780

PostForum: KEF Speakers from the 1970s   Posted: Tue Jun 23, 2015 2:07 am   Subject: KEF Kube
snip
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Another thought - why so relatively few Kef designs were true reflex, and seemed to prefer a passive bass radiator when required (Cadenza, Carlton, 104, Calinda etc)as opposed to the BBC/R ...
  Topic: KEF Kube
exkefman

Replies: 10
Views: 10780

PostForum: KEF Speakers from the 1970s   Posted: Tue Jun 23, 2015 2:06 am   Subject: KEF Kube
...
snip
.
.
Another thought - why so relatively few Kef designs were true reflex, and seemed to prefer a passive bass radiator when required (Cadenza, Carlton, 104, Calinda etc)as opposed to the ...
 
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