replacement tweeter for Kef model 104

dvdwmth · 5th July 2004, 05:35 AM

Im helping someone find a replacement tweeter for a Kef Model 104 that he wants to fix and sell. I assume it will be next to impossible to find an original driver so a suitable substitute will have to do. I haven't been able to find any useful info on the web. Hopefull someone here will have some thoughts on an appropriate replacement.

thanks

btw, this is the model 104 from the 70s, not the reference 104/2

sreten · 5th July 2004, 11:34 AM

The tweeter is the KEF T27 I believe, has no modern equivalent.

To match the cutout diameter (nearly) you'll need a 1" tweeter,
standard size is 104mm, a little less than the T27's 108mm.

Mylar 1" are no longer made, I'd suggest a metal dome.

http://www.madisound.com/seas/H1214.pdf

Is on sale at Madisound, and looks about right, with an L-pad.
Use some black beading around the 2mm that will be left
around the tweeter. Also fit an 8 ohm L-pad to the rear.
Make sure tweeter phasing is correct.

http://www.partsexpress.com/pe/showd...number=260-250

sreten.

Colin · 5th July 2004, 02:14 PM

You could also try contacting Falcon Acoustics in the UK. Used to be good at suggesting replacement drivers, especially for classic designs like the various KEFs.

Colin

Falcon

sreten · 5th July 2004, 04:06 PM

http://cgi.ebay.co.uk/ws/eBayISAPI.d...sPageName=WDVW

They are not impossible to find, but are much sought after, so not cheap.

So not really the way you want go for resale, recouping costs
will be extremely difficult. IMO a neat job with the Seas is the
way to go, also IMO the Seas will be an upgrade over the T27.

IMO Falcon Acoustics do not stock a suitable unit, and will not
be able to do any better than my suggestion for a replacement.

Having the original tweeter fitted is more of an issue with the
KEF 104aB crossover, which is precisely tuned to the T27, which
implies the 104 crossover isn't, so substitution is less of an issue.

Also note my suggestion of the Seas is not a result of sticking
a pin in a donkey, its a carefully considered recommendation,
(but you must use the L-pad or equivalent resistors).

sreten.

sreten · 5th July 2004, 04:41 PM

If I haven't made it clear before both T27's
need replacing, even if one is still working.

You need 2 tweeters and 2 L-pads.

For resale, selling the T27 that still works (if this is
the case) seperately makes the most sense to me.

sreten

ANTHONY2181 · 5th July 2004, 05:02 PM

I've got a spare T27 SP 1032 if your interested.

Cheers

Anthony Kirby

Praudio · 5th July 2004, 07:18 PM

An other one ! good for a pair...

http://www.diyaudio.com/forums/showt...894#post236894

dvdwmth · 5th July 2004, 07:28 PM

Thanks all. Sreten, thanks for your particularly helpful info.

Praudio and ANTHONY2181, I have to talk to the guy that actually owns these and see what he wants to do. I suspect he will want to get these so I'll let you know ASAP. I didn't think this would be so easy

sreten · 5th July 2004, 07:50 PM

For you Canadians the Praudio option is obviously the
one to go for if only one tweeter has met its demise.

End of story .......

I never considered that the post was considering replacing
only one tweeter with a substitute, this is not a good idea.

sreten.

dvdwmth · 6th July 2004, 03:14 AM

no, your first take was correct. Both tweeters need replacing. I dont know what it would cost to get anthony2181's tweeter shipped from the uk but if it is not incredibly outrageous than thats a pair. If its too pricey at least now I know they are not impossible to find.

5th July 2004, 05:35 AM	#1
dvdwmth diyAudio Member Join Date: Apr 2004 Location: Toronto	replacement tweeter for Kef model 104 Im helping someone find a replacement tweeter for a Kef Model 104 that he wants to fix and sell. I assume it will be next to impossible to find an original driver so a suitable substitute will have to do. I haven't been able to find any useful info on the web. Hopefull someone here will have some thoughts on an appropriate replacement. thanks btw, this is the model 104 from the 70s, not the reference 104/2

5th July 2004, 07:18 PM	#7
Praudio diyAudio Member Join Date: Mar 2002 Location: Canada	An other one ! good for a pair... http://www.diyaudio.com/forums/showt...894#post236894 __________________ Praudio

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5th July 2004, 11:34 AM	#2
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	The tweeter is the KEF T27 I believe, has no modern equivalent. To match the cutout diameter (nearly) you'll need a 1" tweeter, standard size is 104mm, a little less than the T27's 108mm. Mylar 1" are no longer made, I'd suggest a metal dome. http://www.madisound.com/seas/H1214.pdf Is on sale at Madisound, and looks about right, with an L-pad. Use some black beading around the 2mm that will be left around the tweeter. Also fit an 8 ohm L-pad to the rear. Make sure tweeter phasing is correct. http://www.partsexpress.com/pe/showd...number=260-250 sreten.

5th July 2004, 02:14 PM	#3
Colin diyAudio Member Join Date: Aug 2003	You could also try contacting Falcon Acoustics in the UK. Used to be good at suggesting replacement drivers, especially for classic designs like the various KEFs. Colin Falcon

5th July 2004, 04:06 PM	#4
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	http://cgi.ebay.co.uk/ws/eBayISAPI.d...sPageName=WDVW They are not impossible to find, but are much sought after, so not cheap. So not really the way you want go for resale, recouping costs will be extremely difficult. IMO a neat job with the Seas is the way to go, also IMO the Seas will be an upgrade over the T27. IMO Falcon Acoustics do not stock a suitable unit, and will not be able to do any better than my suggestion for a replacement. Having the original tweeter fitted is more of an issue with the KEF 104aB crossover, which is precisely tuned to the T27, which implies the 104 crossover isn't, so substitution is less of an issue. Also note my suggestion of the Seas is not a result of sticking a pin in a donkey, its a carefully considered recommendation, (but you must use the L-pad or equivalent resistors). sreten.

5th July 2004, 04:41 PM	#5
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	If I haven't made it clear before both T27's need replacing, even if one is still working. You need 2 tweeters and 2 L-pads. For resale, selling the T27 that still works (if this is the case) seperately makes the most sense to me. sreten

5th July 2004, 05:02 PM	#6
ANTHONY2181 diyAudio Member Join Date: Jul 2002 Location: HERTFORSHIRE UK	I've got a spare T27 SP 1032 if your interested. Cheers Anthony Kirby

5th July 2004, 07:28 PM	#8
dvdwmth diyAudio Member Join Date: Apr 2004 Location: Toronto	Thanks all. Sreten, thanks for your particularly helpful info. Praudio and ANTHONY2181, I have to talk to the guy that actually owns these and see what he wants to do. I suspect he will want to get these so I'll let you know ASAP. I didn't think this would be so easy

5th July 2004, 07:50 PM	#9
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	For you Canadians the Praudio option is obviously the one to go for if only one tweeter has met its demise. End of story ....... I never considered that the post was considering replacing only one tweeter with a substitute, this is not a good idea. sreten.

6th July 2004, 03:14 AM	#10
dvdwmth diyAudio Member Join Date: Apr 2004 Location: Toronto	no, your first take was correct. Both tweeters need replacing. I dont know what it would cost to get anthony2181's tweeter shipped from the uk but if it is not incredibly outrageous than thats a pair. If its too pricey at least now I know they are not impossible to find.

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