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The first 30 watt Hoffman heads I made.
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| These are the original 30 watt heads that I started making in 1994. They were
a 3 space rack chassis, inside of a rectangular wooden box, covered with tolex or tweed. They had a smoked plexi-glass
front panel like the 50 watt heads. The tubes could be seen glowing through the plexi-glass when the amps were on. Later
models had solid black front panels with rear engraved control functions. The circuit was very close to the old plexi
circuit, like the 50 watt heads, except they were run at about 350 plate volts to lower the wattage. There were probably
less than 25 of these made. See the layout diagram for these boards. The boards below
are later models, on the first models the heaters were run on DC. These later boards pictured below ran 6.3 volts
ac heaters. |
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A customer of mine sent me the pictures below. He owns this rig which is serial #1 of
the 30 watt amps.
Click on the pictures below for a larger image. |
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| A 30 watt head, a reverb unit and a 2 x10 cabinet |
The rear of the amp head |
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| Rear of the 2 x 10 speaker cabinet |
Looking inside the head |
