GRAPH TECH GHOST User Manual page 13

Wiring with the Acousti-Phonic Intelligent Pre-Amp
The Acousti-Phonic Intelligent Pre-amp requires a potentiometer (pot) to control
the volume of the GHOST pickups.
It is easiest to replace the function of an existing pot. For Tele style instruments
this will likely be the Tone control. For Strat style instruments this will likely be
the second Tone control.
The Acousti-Phonic Intelligent Pre-amp will work with either a 250k or 500k ohm
pot. As these are standard values it is likely that the existing pot will be the cor-
rect value and may be re-used. For this reason a new pot is not included with the
Acousti-Phonic Intelligent Pre-amp.
The replaced function may be sacrificed, or it may be moved to share a knob
with another existing control by fitting a push-pull double pot or similar arrange-
ment. Alternatively, if there is room, a new hole may be drilled and an entirely
new pot installed.
If the pot to be re-used is not 250k or 500k ohm you must obtain a new 250k or
500k ohm volume pot for the Acousti-Phonic Intelligent Pre-amp. Do not re-use
a pot of a different value as the tone will be compromised.
Connections to the Acousti-Phonic Intelligent Pre-amp are made via the micro-
patch bay at the edge of the board. The supplied cable assemblies plug on to this
micro-patch bay, making installation a snap.
Each signal (the magnetic pickup and the GHOST) is provided with two pins on
the micro-patch bay (Diagram 7). The pin nearest the centre of the board carries
the signal. The adjacent pin near the edge of the board is ground. The cables
must be plugged on to the micro-patch bay so that the signal wire connects
to the signal pins, and the ground (black) wire connects to a ground pin.
In the case of the battery connector, the positive (red) lead connects to the pin
nearest the centre of the board, and the negative (black) lead connects to the
pin nearest the edge.
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