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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: KM1
darkmatter

Replies: 6
Views: 4982

PostForum: KEF speakers   Posted: Fri Dec 01, 2017 9:43 pm   Subject: KM1
Now this is one speaker system I wish that I had the chance to experience!!
  Topic: A fun Isobarik loudspeaker project with 8 no. B139 woofers
darkmatter

Replies: 0
Views: 114

PostForum: DIY with KEF drive units   Posted: Fri Dec 01, 2017 8:44 pm   Subject: A fun Isobarik loudspeaker project with 8 no. B139 woofers
I have 8 of these woofers doing very little in excellent condition.

One speaker I have been a fan of and particularly for its bass performance is the Linn Isobarik.

What I am planning is a stere ...
  Topic: Crossover schematic wanted for KEF BBC LS5/1AE Monitors
darkmatter

Replies: 1
Views: 118

PostForum: KEF speakers   Posted: Tue Nov 28, 2017 1:23 pm   Subject: Crossover schematic wanted for KEF BBC LS5/1AE Monitors
A longshot but a quick search has not uncovered anything; does anyone here have a copy or details for the crossover schematic for the passive KEF BBC LS5/1AE Monitors?

Many thanks,

Simon
  Topic: KEF LS5/1AC Reference series studio monitors
darkmatter

Replies: 39
Views: 21734

PostForum: KEF Speakers from the 1970s   Posted: Fri Nov 03, 2017 9:27 pm   Subject: Re: Just finished internal rewiring the beasts...
My what a revelation ..
The speakers have just been rewired internally. I removed very carefully! the bell wire connections,I still can't believe they used such thin wire to wire up the units,any way ...
  Topic: 600uF coupling cap in Carlton III crossover
darkmatter

Replies: 14
Views: 9231

PostForum: KEF speakers   Posted: Sun Feb 28, 2016 8:14 pm   Subject: 600uF coupling cap in Carlton III crossover
I note that the Elektor PL301 uses a large value of series capacitance to the bass input section. IIRC

600 uF

450 uF in the CS9 kit

Wonder how much improvement could be made by fitting better ...
  Topic: KEF Carlton Mk1
darkmatter

Replies: 6
Views: 5190

PostForum: KEF speakers   Posted: Wed Oct 28, 2015 1:12 pm   Subject: KEF Carlton Mk1
I have been lucky enough to pick up a pair of Carltons recently in very good condition.

Thay are soon to be set up in my main system joining Spendor BCIII and SA3 monitors.

Just found a pair of ...
  Topic: Repair or replacement - B250
darkmatter

Replies: 11
Views: 4276

PostForum: KEF speakers   Posted: Sat Jan 03, 2015 7:36 pm   Subject: Repair or replacement - B250
Yes a good point; maybe worth a try but matching it will be difficult at best
  Topic: KEF Carltons 1968 vintage
darkmatter

Replies: 3
Views: 1602

PostForum: KEF speakers   Posted: Sat Jan 03, 2015 7:27 pm   Subject: KEF Carltons 1968 vintage
Absolutely a real piece of history, well before me as well Smile

Rex Baldock (I think) published an article in Hifi News magazine in the 1960s detailing a subwoofer system he built which was solid to ...
  Topic: Merry Christmas and Happy New Year
darkmatter

Replies: 14
Views: 9355

PostForum: KEF Speakers from the 1970s   Posted: Sat Jan 03, 2015 6:35 pm   Subject: Merry Christmas and Happy New Year
Happy new year to all and let us hope that 2015 betters 2014 Smile
  Topic: Kef 104ab
darkmatter

Replies: 6
Views: 6590

PostForum: KEF Speakers from the 1970s   Posted: Sat Jan 03, 2015 6:29 pm   Subject: Kef 104ab
Reminds me I have 2 pairs of Ref 104 ab speakers in good condition; these I have had in storage (kept safe) for a few years.

I bought these from a local auction house a number of years ago; I must ...
  Topic: Repair or replacement - B250
darkmatter

Replies: 11
Views: 4276

PostForum: KEF speakers   Posted: Sat Jan 03, 2015 6:17 pm   Subject: Repair or replacement - B250
You could speak to Audio Loudspeakers based in Great Yarmouth. I am sure that they could repair the drive unit as they have extensive experience and excellent repair facilities.

Hope this helps

...
  Topic: KEF Carltons 1968 vintage
darkmatter

Replies: 3
Views: 1602

PostForum: KEF speakers   Posted: Sat Jan 03, 2015 6:10 pm   Subject: KEF Carltons 1968 vintage
The mad collector in me is struggling to resist, as I have the chance to purchase a pair of Kef Carltons second hand.

It would be interesting to read what experience members here have had with thes ...
  Topic: KEF C80 Bass issue
darkmatter

Replies: 37
Views: 21128

PostForum: KEF speakers   Posted: Thu Nov 27, 2014 11:59 pm   Subject: KEF C80 Bass issue
Good to see some comments about the C80

I picked up a nice pair recently and am happy to say that I will be keeping them Smile They are in my second system having been searching for a good pair for a ...
 
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