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Old 29th January 2009, 07:25 AM   #1
Michele is offline Michele  Italy
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Default Threshold sa12e

I'd like to buy a pair of them, do you think i could have problems with 20 years old objects?
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Old 29th January 2009, 10:09 AM   #2
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My nextdoor neighbor drives a Bentley classic, but he still needs to renew tires and brakes, his H2 Hummer is likely to fall apart sooner.

The SA/12e has 68 TO3 output devices of 250W each per channel, makes 17,000W total Pd, the load fraction of the output stage(s) is so low that it may outlive you.
Refreshing the electrolytic big cans will be due after 20 years, an exchange of 2 times 250,000uF will be costly.
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Old 29th January 2009, 11:02 AM   #3
Michele is offline Michele  Italy
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Yes, but the question is: new capacitors, different sound?
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Old 29th January 2009, 11:04 AM   #4
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by Michele
Yes, but the question is: new capacitors, different sound?

is it better than "tired capacitors , tired sound "

once upon a time ..... these capacitors were new .......

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Old 29th January 2009, 03:22 PM   #5
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Quote:
Originally posted by Michele
new capacitors, different sound?
The old ones will be worn down, or as good as there.
The heftier the amp, the bigger the difference of a re-can, ime.
Why i gave the car analogy, old tires on a 2-1/2 ton car constitutes a bigger problem.

Going through regular channels, an exchange of 16 let's say Cornell Dubilier CGS electrolytic cans in the 40kuF whereabouts range will easily amount to €2K
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Old 29th January 2009, 04:41 PM   #6
steenoe is offline steenoe  Denmark
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Quote:
Originally posted by Michele
Yes, but the question is: new capacitors, different sound?
New caps? better sound is the answer. Dont even doubt it If it was me, I would simply swap the caps, with Rifa's of same (or better) rating. At least as good as originals, probably better
The low notes get flabby and tired, with worn out psu caps.

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Old 29th January 2009, 10:41 PM   #7
Danish is offline Danish  United States
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I have a pair of SA/12e and I can just say: go for it! They are really great power amps.

Michael
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Old 30th January 2009, 06:18 AM   #8
Michele is offline Michele  Italy
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But too expensive
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Old 30th January 2009, 08:28 PM   #9
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I have a complete service manual for the SA12e, which I will post
when the passdiy site passwords get straightened out, so watch
for it here.

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Old 2nd February 2009, 12:55 AM   #10
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Looking forward to that Nelson

Cheers,
Michael
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