[HAM] Capacitors

[Steve Hayes]

Hi

Scott you are correct on all your statements except for one. As a long time 
Engineer. Power caps in tube gear is very important. Good caps & plenty of 
Mfd size makes for smooth & hum free tone. Tube bloom is a result of these 
caps..

shayes

Steven Hayes Sr Engineer / CEO
www.speakeasyvintagemusic.com

----- Original Message ----- 
From: "Scott Hawthorn" <organfreak at donobi.net>
To: "The Hammond Forum" <hammond at zeni.net>
Sent: Monday, February 18, 2008 2:54 PM
Subject: Re: [HAM] Capacitors


> At 03:42 PM 2/17/2008, Jordan Kersten wrote:
>>Yea, the Orange Drops are cheap.  Would there be any reason to use Sprague
>>Atom Electrolycits?  Those are the expensive ones.  I had an AO-10 preamp
>>with the power supply caps replaced with Sprague Atom caps and I loved the
>>tone.  Would there be an advantage to using these vs. cheaper
>>electrolytics?-Jordan-
>
> I try to use good quality electrolytics, at least brands I have heard of
> before  :-)
>
> I don't know enough about electrical engineering to testify one way or the
> other about power caps affecting the tone-quality, but my instincts and my
> somewhat limited training tell me that such claims would be bogus. I'm 
> open
> to learning about that however. On the other hand, I did work on one AO-28
> that was "motorboating" and it was NOT the scanner or even the vibrato
> system at all. It was one of the electrolytics, and it checked-out in 
> terms
> of shorts and leakage. The high voltage coming off that cap was 
> fluctuating
> wildly for some reason. I would not stint on something so fundamental to
> the correct operation and safety of the amp. Eight bucks for a cap for a
> multi-thousand-dollar instrument? You bet!
>
> For the small ceramic disc caps, I often use the slightly more expensive,
> but bulletproof, dipped silver mica caps. They come in lots of sizes and
> will probably last forever. There's not really much call, in this amp, for
> the size of caps covered by orange drops, though a few would be
> appropriate, like the .02 or .033 coupling caps for instance, or the two
> bigass ones underneath the board there, what are they, .33s?
>
>
>
>
>
>
>
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