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Celeste IV with a broken T33 tweeter

 
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The Willies
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Joined: 20 Mar 2010
Posts: 3
Location: Miami

PostPosted: Sat Mar 20, 2010 9:52 pm    Post subject: Celeste IV with a broken T33 tweeter Reply with quote

I'm a new member to the forum - found when searching for a new tweeter for my KEF speakers – celeste IV’s which we have had since the early 1980’s – The tweeter is the exact same as the picture on your site: T33 SP1074 8 Ohm http://www.hifiloudspeakers.info/Anatomy/DriveUnits/T33SP1074/Gallery/pages/16103.2T33SP1074.htm

It seems these are no longer available anywhere but I am also concerned that the crossover is not good – I switched the tweeters over (the other speaker is working fine) and neither tweeter worked! I returned them and now I am back to square one with one good speaker and one with a non functioning tweeter. Is there any way to test the crossover? what is the best replacement for the T33?

The speakers are like old friends to us and have travelled extensively with us.

I was pleased to find the forum and I would much rather try and get these speakers working again rather than replace them – If anyone can give me some help to get these sounding like they should...
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ColinR
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Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire

PostPosted: Sun Mar 21, 2010 3:01 pm    Post subject: Reply with quote

Quote:
It seems these are no longer available anywhere



Are you sure?

Member jlynnscott got a redome kit from KEF USA last year for $45, which is about the same price the whole drive units of uncertain parentage go for on sleezeBay.


Fixing a broken crossover is easy if you can source the capacitors with similar or higher voltages to the originals from Madisound and the like.

Capacitor values can be "made up" by putting a pair in parallel to get the required result.

Inductors (coils) seldom become faulty, unless you fry them with an Adcom or Krell at a loud party

Soldering can be learnt from the various videos on U-Tube if you don't have a pal with the skills.
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This post or any other information supplied to this website or any other by myself is not available for any form of commercial purpose i.e. to hi-fi magazines or as sales and marketing material for sleezeBay or Audiodogging pimps and the like.
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Gary
Senior Contributor 200+


Joined: 07 Nov 2004
Posts: 275
Location: Toronto, Canada

PostPosted: Tue Mar 23, 2010 12:42 am    Post subject: Reply with quote

ColinR wrote:
Soldering can be learnt from the various videos on U-Tube if you don't have a pal with the skills.


Please don't forget the #1 rule for soldering.







Wear long pants.

Wink
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The Willies
Introductory Contributor


Joined: 20 Mar 2010
Posts: 3
Location: Miami

PostPosted: Tue Mar 23, 2010 2:06 am    Post subject: Reply with quote

ColinR wrote:
Quote:
It seems these are no longer available anywhere



Are you sure?

Member jlynnscott got a redome kit from KEF USA last year for $45, which is about the same price the whole drive units of uncertain parentage go for on sleezeBay.


Fixing a broken crossover is easy if you can source the capacitors with similar or higher voltages to the originals from Madisound and the like.

Capacitor values can be "made up" by putting a pair in parallel to get the required result.

Inductors (coils) seldom become faulty, unless you fry them with an Adcom or Krell at a loud party

Soldering can be learnt from the various videos on U-Tube if you don't have a pal with the skills.



Thanks for the response - I've fired an email to KEF USA and will see what response I get. I will then see what I can do with the crossover.

Thanks again
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The Willies
Introductory Contributor


Joined: 20 Mar 2010
Posts: 3
Location: Miami

PostPosted: Tue Mar 23, 2010 2:15 am    Post subject: Reply with quote

Gary wrote:
ColinR wrote:
Soldering can be learnt from the various videos on U-Tube if you don't have a pal with the skills.


Please don't forget the #1 rule for soldering.

Wear long pants.

Wink


Thanks for the tip - not always worn here in Miami!! Cool
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proffski
Über Contributor 1000+


Joined: 22 Aug 2003
Posts: 1296
Location: Tewkesbury UK

PostPosted: Tue Mar 23, 2010 12:02 pm    Post subject: Reply with quote

[quote="ColinR"]
Quote:

Inductors (coils) seldom become faulty, unless you fry them with an Adcom or Krell at a loud party


I have just given my old trusty Adcom 545MkII to a young lad who is into real H-Fi for his birthday. It certainly sounds far better than his new Rotel RA-04SE integrated amplifier RA04SE which is now being used as a pre-amp.
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man standing in a bucket and trying to lift himself up by the handle.
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proffski
Über Contributor 1000+


Joined: 22 Aug 2003
Posts: 1296
Location: Tewkesbury UK

PostPosted: Tue Mar 23, 2010 12:04 pm    Post subject: Reply with quote

Gary wrote:
ColinR wrote:
Soldering can be learnt from the various videos on U-Tube if you don't have a pal with the skills.


Please don't forget the #1 rule for soldering. Wear long pants. Wink


...and which end to hold the soldering iron by... Shocked
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I contend that for a nation to try to tax itself into prosperity is like a
man standing in a bucket and trying to lift himself up by the handle.
-Winston Churchill
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