SYNTHESIS TECHNOLOGY
PAGE
14
MOTM-110 ASSEMBLY
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place the soldering iron close to the tubing. The radiant heat should close the
tubing.
The last thing to do is to solder the coax cables to the jacks. You will start with J6,
and work backwards to J2. In this manner you will solder the bottom row first.
Solder the coax on J6: this is the RING MOD OUT (lower left jack). Solder the braid
to the ground lug, and the conductor to the left lug.
Solder the coax on J5: this is Y IN (lower middle jack).
Solder the coax on J4: this is X IN (lower right jack). Note that there are 2 wires on
the ground lug: the braid and the previously soldered small white wire.
Solder the coax on J3: this is the VCA OUT (top right jack).
Solder the coax on J2: this is the VCA IN (top middle jack).
Insert the CEM3330 IC into the socket. Place Pin #1 in the lower right socket pin
(the part faces downwards like the other chips). Be sure the chip is all the way
seated, and no pins are bent. Note that the notch on the chip matches the notch
on the silkscreen.
Rotate all of the front panel pots fully counter-clockwise. Locate the
KNOBS
.
Notice each knob has a thin white line on it. Place the knob on the pot shaft,
align the white line to the ‘0’ tick mark (on the GAIN pot, align to the word
‘BIAS’), and tighten the hex screw. The silver part of the knob has a protective
clear plastic overlay that can be removed if desired. Gently rub with your
fingernail and it will peel off.
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CONGRATULATIONS! YOU HAVE FINISHED BUILDING THE MOTM-110!
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All that’s left to do is to calibrate the unit for optimum performance.
METHOD #1: CALIBRATE BY EAR ONLY
Using a small, flat screwdriver turn the white screw part of each trimmer until it is
half-way. This is when the slot is vertical.
You will not adjust the CV REJECT trim, as this requires a DVM or scope.
