Using a router, a Dremel rotary tool, or a chisel, remove the
remaining wood to edges of the marked rectangle, to a
depth of 1-1/8”. Be careful not to enlarge the mounting hole
beyond the lines, as the jack plate fi ts quite precisely to these
dimensions. Remember, this cavity does not have to be neat
and smooth, as it will be hidden completely by the jack plate.
Drill through the back of this cavity to join it to the
main control cavity where the Hexpander will be lo-
cated. Two 5/16” holes side by side makes a slot
wide enough for the ribbon cable to fi t through.
In most cases, no enlargement of the cavity is required to in-
stall the main Hexpander board. Guitars with small cavities like
Telecasters, or guitars with a lot of electronics already installed
may require some routing to make room for the Hexpander.
Enlarging the control cavity
The jack plate can easily be curved to conform to the surface
of the edge of the instrument where the 13-pin jack is to
be mounted. An even curve can be achieved by placing the
jack plate face up on hard surface with a sharp edge (anvil
or machinist’s vice is ide-
the edge with a soft-face
Usually, no routing is required to replace the 1/4” jack
in your instrument with the 1/4” Stereo Switched Jack
that comes with the Acousti-Phonic. In some instances,
the jack is recessed in a hole that is too small. In this case
enlarge the recessed hole to 7/8” diameter. The mount-
ing hole for the Stereo Switched Jack is 3/8” diameter.
Stereo switched Jack (no routing required)
Usually, you can fi nd room for the 9v battery in the existing control
cavity. If your instrument’s cavity is too small or too full of other
electronics, you can either enlarge the cavity or create a cavity
the size and shape of the battery underneath the pick guard.
Ghost® saddles are made of our patented String
Saver composite material which is rugged and du-
rable. The pickup wires, however, are delicate
and must be handled gently during installation.
Route the wires so that they are not fl exed sharply or ex-
cessively, and are not abraded by the edges of holes they
must pass through. When setting the saddle height,
avoid lowering it so much that it crushes the wire or
bends it sharply. On some guitars a neck pocket shim
must be added to maintain suffi cient saddle height.
