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T27 6535 versus T27 SP1032
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hans 67
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Joined: 11 May 2003
Posts: 39
Location: Holland

PostPosted: Sat Apr 24, 2004 6:36 pm    Post subject: T27 6535 versus T27 SP1032 Reply with quote

Hello all,

how about the differences?
KEF used them both in the same speakers (Chorale, Cresta, ???) without changing the crossover (as far as I know).

Why did KEF changed from the 6535 to the SP1032?

Greetings, Hans
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Wouter
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Joined: 18 Jun 2004
Posts: 60
Location: Ramsel (Belgium)

PostPosted: Sun Aug 22, 2004 9:06 pm    Post subject: Reply with quote

Hello Hans,

I don't know an answer to this question
I once have heard that the older versions should be better, but didn't have the time yet to figure it out...

Regards,
Wouter
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proffski
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Joined: 22 Aug 2003
Posts: 1296
Location: Tewkesbury UK

PostPosted: Sun Sep 05, 2004 3:22 pm    Post subject: Reply with quote

The very earliest KEF T27 Tweeter had a free air resonance of 0nly 900Hz.
The specification for the later models was somewhere 1300Hz if i remember correctly.
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hans 67
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PostPosted: Tue Sep 07, 2004 6:09 pm    Post subject: Reply with quote

interesting,

I thought that only the faceplate was different.

Greetings, Hans
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Wouter
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Joined: 18 Jun 2004
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PostPosted: Thu Sep 09, 2004 7:30 pm    Post subject: Reply with quote

Hello all,

But knowing this, it is strange to me that there were no changes in the crossovers....
Apparently, both types can be used with the same type of crossover...



Regards,
Wouter
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ColinR
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Joined: 31 Jul 2004
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Location: Staffordshire

PostPosted: Sat Oct 02, 2004 10:26 pm    Post subject: Reply with quote

Each of the "old style" T27's has its resonnant frequency on a separate sticker e.g. 1150, 1180. The power handling is lower at 7 Volts, SP1032's are 10 Volt units.
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proffski
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Location: Tewkesbury UK

PostPosted: Sun Sep 04, 2005 12:53 pm    Post subject: Reply with quote

I am currently looking ata KEF advert for the early T27.
Categoricaly states 900Hz.
The specification sheets for these printed in blue ink also stated 900Hz.

Are we talking about the same tweeter? The magnet on this one is hidden by a plastic moulding.

There is a white sticker on the backplate and two solder tags for connections, not the two wires.
Impedance is quoted as 'IMP 4-8Ω’
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proffski
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PostPosted: Sun Sep 04, 2005 1:05 pm    Post subject: Reply with quote

Now I am getting dizzy!
Another leaflet again for the SP1032 quotes 50 watts programme.
F/S 900Hz!

Neither of these look like the big plastic T27 without a KEF SP number...
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proffski
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PostPosted: Sun Sep 04, 2005 1:48 pm    Post subject: Reply with quote

On EBay now. what looks like some pristine unused early 6535 T27s.

http://cgi.ebay.co.uk/KEF-T27-TYPE-6535-SUPERB-SOUND_W0QQitemZ5805182547QQcategoryZ3276QQrdZ1QQcmdZViewItem
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Wouter
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Joined: 18 Jun 2004
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Location: Ramsel (Belgium)

PostPosted: Mon Sep 05, 2005 12:27 pm    Post subject: Reply with quote

Yes indeed Andy!

But the 6535 exists with a black dome and the very early with a tranparent dome.
Am I right?

Regards,
Wouter
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proffski
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PostPosted: Mon Sep 05, 2005 1:54 pm    Post subject: Reply with quote

Yes, annoying and confusing is it not? Shocked
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Wouter
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PostPosted: Tue Sep 06, 2005 9:27 pm    Post subject: Reply with quote

Yes, but I don't have more information.

I have both types, (black domed) 6535 and SP1032. I should do some tests to check if there is any difference.

Regards from Belgium!
Wouter
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Wouter
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PostPosted: Wed Sep 07, 2005 8:23 pm    Post subject: Reply with quote

Hello,

Here is an example of the transparent dome:
http://cgi.benl.ebay.be/Kef-T27-Tweeters_W0QQitemZ5804821905QQcategoryZ112517QQrdZ1QQcmdZViewItem


Wouter:
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proffski
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PostPosted: Wed Sep 07, 2005 9:22 pm    Post subject: Reply with quote

Thank you Wouter, that is a good example.
Later production had the 4 removed from the back where it stated 4-8 Ohm.
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MGM
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Joined: 13 Nov 2014
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Location: Witney Oxon

PostPosted: Tue Nov 18, 2014 5:02 pm    Post subject: Reply with quote

Wouter wrote:
Hello all,

But knowing this, it is strange to me that there were no changes in the crossovers....
Apparently, both types can be used with the same type of crossover...



Regards,
Wouter


Yes, they can be used with the same type of crossover. I used 6535 tweeters in my re-built Codas without any problem. They sound just fine.
Whether the SP1032 does make a difference I don't know, but they cost more as people are looking for them to use in LS3/5as.
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