[analogorgans] Re: Photos of a 550 up at Rodgers550.com
- From: "Thomas W. Nelson" <twn@xxxxxxx>
- To: analogorgans@xxxxxxxxxxxxx
- Date: Thu, 01 Jul 2004 16:55:41 -0400
Ken Fedorick wrote:
>Nice organ. I like the way they did the power amp rack. My 37E has 14
>channels. I can use some of the ideas to rack the amps.
>
>
Wow. Never heard of that model, Ken. Is it a customized version of a 36E?
The power amp rack is a good idea to keep everything together,
especially in home or mobile installations, but you need to be careful
with the cooling if there's any possibility of pushing the S-100s near
their rated power. When I built my 'rack' from a Conn 255 tone cabinet,
I mounted the amps horizontally by their short-side flanges on wooden
rails that ensured that there was sufficient convection airflow up
through the heatsinks. When I add the additional amps for the
antiphonal channels on my 660, I've allowed enough room between these
'shelves' so that the added amps below won't cook the ones above.
I know the Rodgers amps are darn near indestructable, but call me
paranoid. I'm a long time EE and I hate having component failures at
the worst time because of dumb cooling mistakes.
Tom Nelson
Rodgers 660D & 34A/325 hybrid
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