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KEF Cantata

 
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cryptfactor
Introductory Contributor


Joined: 04 Apr 2006
Posts: 4

PostPosted: Tue Apr 04, 2006 12:56 am    Post subject: KEF Cantata Reply with quote

I have had a pair of Cantatas' for some 15 years, they're practically as new, built 1977 and I love them. When I bought the pair (from a hi-fi dealer who was aware that I'm a sound engineer) it was suggested that improvements could be made to them. I have yet to be convinced! It was even suggested I should replace the castors with spikes! Worse again they recommended 'doing away' with the fuses (that on one occasion saved my T52s).

There you go. My first post here! I'd be interested to hear from anyone using Cantatas and even sensible modifications.

Cryptfactor
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ColinR
Über Contributor 1000+


Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire

PostPosted: Tue Apr 04, 2006 10:31 am    Post subject: Reply with quote

Er none really, all I've done is taken off the metal panels, used a fine brass wire brush on the wafer switches and then sprayed them with some RS component contact cleaner.

I've also re-capped the crossovers with Solens.

This has brightened up the sound somewhat, converting what used to be a rather lazy sounding speaker into a bit of a party animal.

Beware though, as the largest value on the mid-treble board is 50uF.
So you have to make up this value with a 20uF or 30uF Solen plus an electrolytic, otherwise there is just a little too much hanging off the circuit board to allow re-assembly inside the midrange chamber.

So if you really want to use big valued Solens, you'll have to "go external" with the crossovers, as there's not enough room inside the "tin" Shocked .
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cryptfactor
Introductory Contributor


Joined: 04 Apr 2006
Posts: 4

PostPosted: Wed Apr 05, 2006 1:36 pm    Post subject: cantata mods. Reply with quote

The only thing I did to mine was remove the metal grills from the hf & mid. units. I cleaned the wafer switches and just move them occasionally to keep them clean. I've not looked at the x/overs, 50µF is certainly a large value for a non electrolytic. Not heard of the make that you mention.

regards, John
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ColinR
Über Contributor 1000+


Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire

PostPosted: Wed Apr 05, 2006 4:51 pm    Post subject: Reply with quote

Huh Confused , SOLEN/SCR Metallized Polypropylene Capacitors

SCR SA,
ZI La Malterie
36130 Montierchaume
Tel +33 (0) 254222724

Which is the parent of this lot.

Solen Électronique Inc.
4470 Thibault Ave.
St-Hubert, QC J3Y 7T9
Canada
Tel.: 450-656-2759
Email: solen@solen.ca
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centaurus
Senior Contributor 100+


Joined: 21 Apr 2006
Posts: 125
Location: Okland, CA

PostPosted: Tue Apr 25, 2006 4:20 am    Post subject: Reply with quote

check out partsexpress.com and madisound.com. only use polypropelyne (sp?), not electrolytic.

for fun, you can try some motor run hermetically sealed oil caps. check out ebay user machinery13. good prices. i paid $4 a piece for my 25uf oil caps for my janszen z-600s.

see ya,
Robby
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