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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: Model P60
nat8808

Replies: 36
Views: 29436

PostForum: KEF speakers   Posted: Tue Apr 17, 2012 9:51 am   Subject: Model P60
Hi - Yes, the SP2151 is the low level EQ for these. That is what I have.

As above, I think my P60s have been either put together from parts or had the damping removed as they are definately not dea ...
  Topic: Possible good T33 replacements - ScanSpeak 97000
nat8808

Replies: 0
Views: 2130

PostForum: KEF speakers   Posted: Thu Sep 15, 2011 10:38 pm   Subject: Possible good T33 replacements - ScanSpeak 97000
Just wanted to put it out there that these seem to work pretty well as T33 replacements..

I've only tried them on some Meridian M10s (upgraded(?) to M100 T33 tweeters by Meridian but still M10 amp ...
  Topic: Meridian M100, M20, M30s
nat8808

Replies: 3
Views: 5427

PostForum: Other speakers   Posted: Thu Sep 15, 2011 10:29 pm   Subject: Meridian M100, M20, M30s
wow... has it seriously been this long?

Well - just this week I replaced the T33s with scanspeak 97000s and... well they certainly didn't change the treble output level that I could tell immediatel ...
  Topic: Model P60
nat8808

Replies: 36
Views: 29436

PostForum: KEF speakers   Posted: Wed May 18, 2011 5:07 pm   Subject: Model P60
I have a pair of these also - they are a non-K300 pair with a rackmount EQ unit instead.

I'll have to get them out to check but I seem to remember that I was actually disapointed in their construct ...
  Topic: R107 - ooops DEQ2496 !!! - experiences anybody ?
nat8808

Replies: 7
Views: 5376

PostForum: KEF speakers   Posted: Wed May 18, 2011 5:00 pm   Subject: R107 - ooops DEQ2496 !!! - experiences anybody ?
As an aside to an old topic..

There was a discussion on DIYaudio a while back that the original (or one of) designer of the 107 contributed to. He was talking about how much of the Kube was about c ...
  Topic: Meridian M100, M20, M30s
nat8808

Replies: 3
Views: 5427

PostForum: Other speakers   Posted: Fri Jun 12, 2009 1:43 pm   Subject: Meridian M100, M20, M30s
Hi all,

Does anyone know what version of the T33 tweeter these are supposed to use?

I've just bought a pair of M10s and they have at some time had a few tweeter changes - firstly b ...
  Topic: JR M51???
nat8808

Replies: 4
Views: 3719

PostForum: Other speakers   Posted: Fri Jun 12, 2009 1:33 pm   Subject: JR M51???
Are these JR Metros? I've a pair too - did you get any info?
  Topic: KEF R107 head crossover specifications?
nat8808

Replies: 6
Views: 8640

PostForum: KEF speakers   Posted: Fri May 15, 2009 3:55 am   Subject: KEF R107 head crossover specifications?
Looking at the measurement sections in Stereophile's reviews for both versions of the speaker:

Yes, the KUBE's did not only address the bass tuning, but in certain models were also used to provide ...
  Topic: KEF R107 head crossover specifications?
nat8808

Replies: 6
Views: 8640

PostForum: KEF speakers   Posted: Thu May 14, 2009 6:54 pm   Subject: KEF R107 head crossover specifications?
Pointless?!

The link shows you where this information can be found, the ONLY place it can be found freely and publicly available online as far as I have ever found! If you don't want the info then ...
  Topic: Could an active crossover be utilised with the Kef R107?
nat8808

Replies: 10
Views: 6247

PostForum: KEF speakers   Posted: Sat May 09, 2009 10:21 pm   Subject: Could an active crossover be utilised with the Kef R107?
For changing them to bi-wire, I think there are three components - two caps and an inductor - in the bass unit crossover that act as a high-pass filter before the wires go up to the head unit. Again, ...
  Topic: Could an active crossover be utilised with the Kef R107?
nat8808

Replies: 10
Views: 6247

PostForum: KEF speakers   Posted: Sat May 09, 2009 10:17 pm   Subject: Could an active crossover be utilised with the Kef R107?
Well, no need to deciper the crossover as it has been half done! See this thread on the DIY Audio Forum with in put from the actual Kef designer, AndrewJ http://www.diyaudio.com/forums/showthread.php? ...
  Topic: KEF R107 head crossover specifications?
nat8808

Replies: 6
Views: 8640

PostForum: KEF speakers   Posted: Fri May 08, 2009 2:52 am   Subject: KEF R107 head crossover specifications?
Take a look at the circuit diagram of the cross-over in the bass unit here:

http://www.diyaudio.com/forums/attachment.php?s=&postid=1763069&stamp=1236128685

It looks like there are three ...
  Topic: Could an active crossover be utilised with the Kef R107?
nat8808

Replies: 10
Views: 6247

PostForum: KEF speakers   Posted: Fri May 08, 2009 2:11 am   Subject: Could an active crossover be utilised with the Kef R107?
If with the equaliser (and any other kit you may have) you can measure and model the 107's drive unit correction circuits go for it Very Happy .

Otherwise it's a pain trying to corrrectly identify and iso ...
  Topic: KEf 107 Internal Wiring Upgrade
nat8808

Replies: 18
Views: 12003

PostForum: KEF speakers   Posted: Tue Nov 25, 2008 9:40 pm   Subject: KEf 107 Internal Wiring Upgrade
Hi,

I've just joined too - glad to find a few people thinking of tinkering with their 107s in one place!

As was said earlier, the internal wiring is bell wire and also the connecting wi ...
 
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