Re: [Harp-L] The Mission Chicago 32-20 harp amp

[Rick Davis <bluesharpamps@xxxxxxxxx>]

As I understand it, Bruce Collins was the original developer of the Copper
Cap solid state rectifier sold by Weber.  In your cite he is defending the
price of the Copper cap ("around $20.00") against the idea of hobbyist or
homebuilder developing the same circuit on his own.

Bruce is also the builder of the Mission Chicago harp amp, and during the
design phase several months ago he opted to use a tube recifier instead of
solid state becasue it sounds better.

-- 
-Rick Davis
The Blues Harp Amps Blog
http://www.bluesharpamps.blogspot.com/



On Fri, Dec 10, 2010 at 6:46 PM, THOMAS FIACCO <mx714@xxxxxxxxxxx> wrote:

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> Heres a post from Bruce at Mission from 2004-
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> Bruce /Mission Amps
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> The reason to buy them is that for around $20.00, you get the whole thing
> in something that at least looks "tube like", plugs into your existing
> rectifier tube socket and has more then just a pair of diodes and a series
> resistor.
> Also, with a Copper Cap rectifier, a homebuilder doesn't have to go through
> the brain work of figuring out what resistance makes this device sag or
> "react" like a 5___GT rectifier tube, plus it has a warranty.
> Sure you can use it's circuitry and build a copy of this (or something like
> it) for a few dollars and it can hang out in space somewhere or you can
> shove the actual components into the chassis and solder it in... but then
> you won't be able to replace it at will or on the fly like you can a Copper
> Cap.
> Somethings just aren't worth the trouble IMHO, and to me, this is one.
> Bruce