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| How to determine if your chassis is a good candidate for a
Hoffman board. |
The
Hoffman boards can be installed in
re-issue PC board type amps or scratch built amps. By removing the
printed circuit board and installing one of these hand wired boards you can greatly improve the tone of the amp at a very
reasonable price.
The
boards can be installed by you or by a service technician. All
you need is a proper amp carcass to install one of these kits. Chassis that may be used include
the BASSMAN re-issue, BASSMAN heads, some JCM800 heads, PLEXI re-issue heads or some
of the so called Fender re-issue models now being made. See the chassis type drawing below to
determine if your chassis will be a good candidate for a board kit. |
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| Note:
If your project chassis does not have a tube socket hole pattern similar to the drawing
above, the boards probably will not fit. You need to be able to put a 3 1/8th inch wide
circuit board right along side a straight line of tube sockets and still have some room at the
front for pots and input jacks. If you have a chassis with tube socket holes scattered all
over the chassis or you do not have at least 5 inches
of room from the front of the amp to the edge of the tube socket holes,
the chassis probably will not work. You need to leave room for input jacks and
pots along the front edge of the chassis. Some chassis like Sovtek's
have reversed tube socket patterns and will not work unless you have a
mirror image board made. |
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