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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: Which B139 in the C80 ?
hans 67

Replies: 9
Views: 7651

PostForum: KEF speakers   Posted: Wed Jun 07, 2006 11:25 pm   Subject: Which B139 in the C80 ?
Thank you ColinR.

I had never heard before of the SP1212.
Does anybody know if it is used in other speakers than the C80?

Hans
  Topic: Which B139 in the C80 ?
hans 67

Replies: 9
Views: 7651

PostForum: KEF speakers   Posted: Mon Jun 05, 2006 3:56 pm   Subject: Which B139 in the C80 ?
Does anybody know?
Somewhere I read the SP1212, but I do not know that one.

Thanks in advance, Hans
  Topic: best KEF speaker with B139?
hans 67

Replies: 10
Views: 8908

PostForum: KEF Speakers from the 1970s   Posted: Mon Jun 05, 2006 3:34 pm   Subject: best KEF speaker with B139?
Update:

I now have some Concerto's repaired. I bought them with failing crossovers. Last weekend I bought some 2nd hand crossovers and now the Concerto's are singing. I like them very much.

My p ...
  Topic: Naim amplifiers = ^*(^&*^&*^&*
hans 67

Replies: 7
Views: 9018

PostForum: Linn Kan, Isobarik and others   Posted: Sun Jan 29, 2006 9:30 am   Subject: Naim amplifiers = ^*(^&*^&*^&*
Naim ripped off an RCA solid state design
So what?

Better a good copy than a bad new thing!

Hans
  Topic: Concerto SP1002 crossover?
hans 67

Replies: 8
Views: 5091

PostForum: DIY with KEF drive units   Posted: Sat Jan 14, 2006 9:29 pm   Subject: Concerto SP1002 crossover?
Does these differences mean that if I want to replace my crossovers that I need some SP1002s and that I can NOT use SP1004s?

Hans
  Topic: Concerto SP1002 crossover?
hans 67

Replies: 8
Views: 5091

PostForum: DIY with KEF drive units   Posted: Sat Jan 14, 2006 9:15 pm   Subject: Concerto SP1002 crossover?
Why different?
I have not seen resistors in the SP1004 DN12 network. And the values of the capacitors are different.
Or do you mean that the B110A from 1971 is different from those in 1975 and 1985. ...
  Topic: Concerto SP1002 crossover?
hans 67

Replies: 8
Views: 5091

PostForum: DIY with KEF drive units   Posted: Sat Jan 14, 2006 5:05 pm   Subject: Concerto SP1002 crossover?
I have posted the schematic of the crossover:

http://www.dse.nl/~hifi/concerto/index.htm

I am not sure about the 6 uF capacitor, I could not read it clearly.

It is definately different to the ...
  Topic: Concerto SP1002 crossover?
hans 67

Replies: 8
Views: 5091

PostForum: DIY with KEF drive units   Posted: Sat Jan 14, 2006 12:32 pm   Subject: Concerto SP1002 crossover?
Hello ColinR,

here some photos of my Concertos:

http://www.dse.nl/~hifi/concerto/pair.jpg
http://www.dse.nl/~hifi/concerto/label.jpg
http://www.dse.nl/~hifi/concerto/pcb.jpg
http://www.dse.nl ...
  Topic: Concerto SP1002 crossover?
hans 67

Replies: 8
Views: 5091

PostForum: DIY with KEF drive units   Posted: Sat Jan 14, 2006 9:55 am   Subject: Concerto SP1002 crossover?
Hello all,

I have a pair of Concertos with the SP1002 crossover.
Does anybody have the schematics?

I can figure out myself the circuitboard, but I am not able to measure the inductances.

Han ...
  Topic: Naim amplifiers = ^*(^&*^&*^&*
hans 67

Replies: 7
Views: 9018

PostForum: Linn Kan, Isobarik and others   Posted: Sat Jan 14, 2006 8:43 am   Subject: Naim amplifiers = ^*(^&*^&*^&*
But still one of the best sounding amps.

Hans
  Topic: best KEF speaker with B139?
hans 67

Replies: 10
Views: 8908

PostForum: KEF Speakers from the 1970s   Posted: Sat Jan 14, 2006 8:41 am   Subject: best KEF speaker with B139?
Thank you ColinR,

that is very informative.
If I understand you correctly than you are writing that the sound of the tweeters is very depended of the filter in front of it?

My problem with the ...
  Topic: best KEF speaker with B139?
hans 67

Replies: 10
Views: 8908

PostForum: KEF Speakers from the 1970s   Posted: Fri Jan 13, 2006 9:34 pm   Subject: best KEF speaker with B139?
Let me start.

Tweeters.
All 4 have different tweeters:
Concerto: T27
Cantata: T52B
CS7: T33A
C80: T33B

What is the best tweeter?

I myself do not like the T52B. I think it is more a upper ...
  Topic: best KEF speaker with B139?
hans 67

Replies: 10
Views: 8908

PostForum: KEF Speakers from the 1970s   Posted: Fri Jan 13, 2006 9:30 pm   Subject: best KEF speaker with B139?
to add...I think one of the Sonus Faber models has a B139
OK, I did not know. But I did mean KEF speakers. Maybe interesting for another topic which speakers we all know with the B139.

Hans
  Topic: best KEF speaker with B139?
hans 67

Replies: 10
Views: 8908

PostForum: KEF Speakers from the 1970s   Posted: Thu Jan 12, 2006 8:54 pm   Subject: best KEF speaker with B139?
Hello all,

what do you think is the best KEF speaker with the B139?
And why?

I can think of the folllowing candidates:
-Concerto
-Cantata
-C80
-CS7

I have choosen to name only the 3-way ...
  Topic: T27 6535 versus T27 SP1032
hans 67

Replies: 22
Views: 20927

PostForum: KEF Speakers from the 1970s   Posted: Tue Sep 07, 2004 6:09 pm   Subject: T27 6535 versus T27 SP1032
interesting,

I thought that only the faceplate was different.

Greetings, Hans
 
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