Prepping The Cabinet - StewMac ’64 REVERB UNIT Assembly Instructions Manual

Start by prepping the cabinet
Prepare the cabinet for mounting the
chassis by first removing the back
panel .
STEP 1
Mount the power cord clamp
Drill a 5/64" pilot hole to mount the
power cord clamp . Locate the clamp
inside the left wall of
the cabinet, 1-1/2" from
the back panel ledge,
POWER FUSE PILOT LIGHT
2" from the bottom .
Don't drill through the cabinet! Use a
piece of masking tape on your drill bit
to mark the depth, or use a StewMac
Depth-stop Drill Bit (item #1712) .
Use the black wood screw to mount
the cable clamp . You'll secure the
power cord with this clamp later, after
the testing .
'64 REVERB UNIT
StewMac
®
O R I G I N A L 6 G 1 5 C I R C U I T
I C O N K I T S
DANGER: Unplug the unit before changing tubes.
Tube locations from left to right:
6V6
12AT7 12AX7
(ECC81) (ECC83)
V3 V2 V1
Use only 1-amp slow-blow fuse.
#10733
STEP 2
Glue the tube placement chart
Cut out the tube placement chart on
page 39 . Put a thin coat of glue or
contact cement on the back and glue
it to the inside wall of the cabinet .
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STEP 3
Solder two reverb cables
Cut the shielded wire in the reverb
wiring kit to two 2' lengths . At the
ends of each piece, pull 3/4" of the
wire mesh shielding away to one side
and strip away 3/8" of the internal
cloth shielding . Insert the exposed
wire into an RCA plug so that it reach-
es the tip of the center post .
V?
Solder this lead in place at the tip of
6V6
the plug . Don't leave solder on the
outside of the plug tip, which would
keep it from fitting into the jack . See
"Tips for great soldering" on page 17 .
After the plug tip cools and the inside
solder joint is set, solder the braided
wire shielding onto the outside of the
plug . Solder the four plugs this way,
one on each end of the two cables .
These two cables will connect the
reverb tank to the chassis later on .
Test for continuity between the tips
of the plugs on each cable, then test
for continuity between the shields of
the plugs in the same way .
Also test to make sure you don't have
continuity between the tip and the
shield of each plug, which would
indicate a short in the cable . If your
multimeter finds unwanted continu-
ity, the likely culprit is the inside (tip)
wire shorting to the outer shield . If
that happens, de-solder the tip con-
nection and redo that solder joint .
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STEP 4
12AX7
Mount the reverb tank
Remove the nuts from the four reverb
tank mounting screws and remove
your reverb tank from its box . Install
the reverb tank with the RCA jacks
facing up .
Reinstall the four reverb tank mount-
ing nuts, tightening each until they
are sufficiently tight .
9
V?
12AX7
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