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When asked:
My (Evan D. Taubenfeld speaking) younger
brother is graduating from college (Berklee)
and i want to get him a 1x12 combo from
your line of stuff. I'm thinking your
SJT 10/20 but he is a jazz/blues with an
edge type of player and i think he may
need a little more clean headroom and
then maybe the potential of getting more
aggressive at lower levels as well. Can
you make him something more like in the
30 watt range that can go to a half
power mode more like a late fifties
tweed like amp for smaller duties?
WHY NOT?!
We start with the basic SJT 10/20 format
and first change the entire back end of
the amplifier, both the circuit and the
output iron and choke to accommodate
using a pair of KT 66s, and KT 66s
specifically because they produce a
really nice American amp style of clean
with more of a glassy/shimmery type of
high end and when driven a more creamier,
content rich type of overdrive not able
to be produced by a standard 6L6GC type
of tube. Next make a power tranformer,
that when tube rectified, produces the
precise amount of B+ voltage to achieve
30 watt approximately with a pair of KT
66's in a Class AB1 mode and in a Class
A mode take the current draw necessary
to support that mode as well. We keep
the reverb and dampening switch and the
speaker of choice is a Celestion Vintage
30 chosen for both the sound it produces
and it's power handling capabilities.
What you get at the end of the rainbow
is one of Divided by 13 most versitile
amplifiers to date. With almost
unlimited capabilities it captures a
perfect merger of classic American and
British cleans to overdriven tones and
voicings and all in a relatively small
and portable 30 watt 1x12 combo again
inspired by a player (thanks Evan) that
is asking us to take him where he wants
to go.
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13 Watts in Class A
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29 Watts in Class AB1
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Class Switch
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Tube Rectified (5AR4/GZ34)
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Power Section: 2 x KT 66'S
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Preamp: 12AX7's, 12AT7
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One Channel: Volume, Treble, Bass,
Reverb
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1x12 (Celestion Vintage 30)
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4, 8, 16 Ohm output
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Dimensions: 21H x 22W x 10.5D
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