----- Original Message -----
From: "Richard Measures" <r@somis.org>
To: "k7fm" <k7fm@teleport.com>
Cc: <amps@contesting.com>
Sent: 08 April 2005 20:48
Subject: Re: [Amps] Solid State Amps
>
> On Apr 8, 2005, at 6:29 AM, k7fm wrote:
>
> > I have a big concern for this forum when the solid state amps finally
> > replace the tubes.
> >
> > Some amp experts will have to start over with remedies. I mean
> > transistors
> > do not have gold melt balls rolling around inside. Custom wound
> > parasitic
> > suppressors, formed during a full moon, will no longer be needed.
>
> Transistors are optimized to discourage parasites.
There's no shortage of 'parasites', they just mutate into different forms.
When an apps engineer I remember working on a customer's amp which would
hoot given a particular combination of drive and load. The problem was, once
started, not even a copper strap across the base/emitter terminals of the
transistor would stop it! The solution was very simple, but they never
spotted it in the reworked version I did for them. Just a bit of magic...
Steve
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