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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: Active crossover question
Lee in Montreal

Replies: 33
Views: 29569

PostForum: DIY with KEF drive units   Posted: Wed Dec 01, 2010 11:48 pm   Subject: Active crossover question
"with 125Hz splitting frequency with a bump at 250Hz"

Meaning a crossover frequency at 125Hz but an increase in volume around 250Hz to perhaps compensate and end-up with a flat response. ...
  Topic: Active crossover question
Lee in Montreal

Replies: 33
Views: 29569

PostForum: DIY with KEF drive units   Posted: Tue Nov 30, 2010 3:00 pm   Subject: Active crossover question
Just jumping in the conversation. Didn't Mr Cook himself design an in-house (for internal use) active crossover with 125Hz splitting frequency with a bump at 250Hz?

http://img.photobucket.com/album ...
  Topic: 105 mk 1 crossover repair
Lee in Montreal

Replies: 6
Views: 4751

PostForum: KEF Speakers from the 1970s   Posted: Sun Nov 07, 2010 10:46 pm   Subject: 105 mk 1 crossover repair
That's a great source... would there be anyone like that on this side of the pond?
Question

www.solen.ca for high quality caps. But beware. Better quality doesn't necessarely mean better sound as ther ...
  Topic: KEF 107 woofer replacement - thoughts in this recommendation
Lee in Montreal

Replies: 2
Views: 4004

PostForum: KEF speakers   Posted: Sat Nov 06, 2010 2:37 pm   Subject: KEF 107 woofer replacement - thoughts in this recommendation
I wouldn't fit any other component than a Kef part in my Kef.
  Topic: Unfaithfull to Kef
Lee in Montreal

Replies: 15
Views: 19150

PostForum: Other speakers   Posted: Fri Nov 05, 2010 9:51 pm   Subject: Unfaithfull to Kef
Purchased a 1978 Yamaha P2200. This a very sweet yet powerfull and reliable power amplifier. At 2 x 230w under 8 ohms, it was initially intended for PA, but sounded so good that it found homes in reco ...
  Topic: Unfaithfull to Kef
Lee in Montreal

Replies: 15
Views: 19150

PostForum: Other speakers   Posted: Thu Oct 21, 2010 4:31 am   Subject: Unfaithfull to Kef
One word.... AWESOME!!!

Yup. The 4520s are awesomely gorgious. If you have the room. Imagine four woofers pressuring the air. And what's great is that the plans are available from the net. Therefor ...
  Topic: Unfaithfull to Kef
Lee in Montreal

Replies: 15
Views: 19150

PostForum: Other speakers   Posted: Wed Oct 20, 2010 10:38 pm   Subject: Unfaithfull to Kef
Eek! You will be contravening some international arms treaties with these behemoths! Smile

The energy coming from these 4530 is incredible. Under 150Hz, the sound (shock wave?) comes from the large ...
  Topic: Unfaithfull to Kef
Lee in Montreal

Replies: 15
Views: 19150

PostForum: Other speakers   Posted: Fri Oct 15, 2010 7:58 pm   Subject: Unfaithfull to Kef
Look what followed me home.

http://img.photobucket.com/albums/v668/Lee_Vuong/Kef%20speakers/JBL4530.jpg

Yup. A pair of JBL 4530 (copies) with 2225h drivers, that I purchased to study, until I ma ...
  Topic: 4 Ohms B139 TS1212
Lee in Montreal

Replies: 1
Views: 4035

PostForum: KEF Speakers from the 1970s   Posted: Thu Oct 14, 2010 8:53 pm   Subject: 4 Ohms B139 TS1212
Hi guys. I have purchased these in the late 80s. They are 4 Ohms and have no clue in which system they were supposed to be.

http://img.photobucket.com/albums/v668/Lee_Vuong/Kef%20speakers/DSCF0053. ...
  Topic: Unfaithfull to Kef
Lee in Montreal

Replies: 15
Views: 19150

PostForum: Other speakers   Posted: Thu Sep 30, 2010 10:05 pm   Subject: Unfaithfull to Kef
I played all sort of stuff, fed by an ADCOM 5500 (yurk) and a Quad 606 (much better) and looking for a Yamaha PC2002M for that improved bass control.

http://www.hiendoption.com/home/components/com_ ...
  Topic: Unfaithfull to Kef
Lee in Montreal

Replies: 15
Views: 19150

PostForum: Other speakers   Posted: Thu Sep 30, 2010 1:25 pm   Subject: Unfaithfull to Kef
Indeed only one as it is a test. 190L is big and I wanted to make sure I could do something that is easy to integrate. It is heavy, yet easy to move around. Soundwise, I am happy. Currently looky for ...
  Topic: Unfaithfull to Kef
Lee in Montreal

Replies: 15
Views: 19150

PostForum: Other speakers   Posted: Wed Sep 29, 2010 6:25 pm   Subject: Unfaithfull to Kef
Here's what I just built.
195L enclosure with 15" JBL 2335h w/ Fs 20Hz

http://img.photobucket.com/albums/v668/Lee_Vuong/Kef%20speakers/JBL_1.jpg
http://img.photobucket.com/albums/v668/Lee_Vu ...
  Topic: Unfaithfull to Kef
Lee in Montreal

Replies: 15
Views: 19150

PostForum: Other speakers   Posted: Thu Sep 23, 2010 4:09 pm   Subject: Re: Unfaithfull to Kef
does each port see a separate volume? Otherwise you are just putting two acoustic masses in parallel, resulting in one resonance at a frequency set by the volume and the equivalent mass of the ports ...
  Topic: Unfaithfull to Kef
Lee in Montreal

Replies: 15
Views: 19150

PostForum: Other speakers   Posted: Tue Sep 21, 2010 9:21 pm   Subject: Unfaithfull to Kef
Yup. I bought some vintage JBL Pro components and started playing with that.

I purchased a 2235h 15" woofer and built a 6.9cf (195L) bass reflex enclosure. The 2235h is the famous audiophile p ...
  Topic: New member restoring a pair of 105.2
Lee in Montreal

Replies: 25
Views: 20497

PostForum: KEF Speakers from the 1970s   Posted: Thu Sep 09, 2010 12:11 am   Subject: New member restoring a pair of 105.2
I run a Behringer DEQ1024 and a CX3400 active crossover, with ADCOM 5500 (bass), Rotel RB951Mk2 (mids) and Quad 405 (highs) on my custom 105/2. I love the infinite adjustability. With no crossovers be ...
 
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