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Original Graphtech Factory Wirirng Diagrams

Standard Graphtech Ghost Acousti-Phonic & Hexpander Installations

Acousti-Phonic with Quickswitch Standard Acousti-Phonic wiring with optional Quick Switch for magnetic/both/acoustic switching.

Acousti-Phonic Kit Standard Acousti-Phonic wiring with the acoustic volume pot and Mid/Dark push/pull switch plus a Quick Switch

Powering Active Pickups Standard wiring for the Acousti-Phonic with active pickups like EMG's with 9volt or 18volt configurations.

Hexpander First Row These connections are on the Hexpander's pass-through connector to the Acousti-phonic when they're piggybacked together, so they're the same as the standard installations for the Acousti-Phonic.

Hexpander Second Row The standard connections for the Hexpander pickups, optional switches, and volume pot.

Pin 7 Harness For use when the Hexpander is used without an Acoisti-Phonic. Tha harness allows the magnetic and acoustic pickups to be sent down the 13-pin connector. Note this requires the addition of an acoustic volume pot, or you can omit the pot and get acoustic out at full volume all the time by connecting the yellow and orange wires together. The Quick Switch plugged into the Hexpander will control these signals on the 13-pin, but not on the 1/4" jack. To get magnetic pickups only on the 13-pin connector, omit the yellow and orange wires. To get acoustic-only on the 13-pin connector, leave the magnetic pickups disconnected. Connect the green wire to the magnetic pickup system at the 1/4" jack.

Passive Volume Kit This diagram shows how to install the Passive Volume Kit when using ghost acoustic saddles or a ghost bridge without the Acousti-Phonic

Custom Controls

Les Paul Toggle Switch This diagram shows how to wire a Les Paul style 3-way toggle switch in place of the QuickSwitch.

Acousti-Phonic with Tone Control

Add a tone pot to the ghost acoustic volume. Note that players sometimes add this thinking they will need it, and never use it because they love the Acousti-phonic sound the way it is. Try the Acousti-phonic first without a tone pot, and add it only if they feel its necessary.

Push Pull as a QuickSwitch
Use the switch in push/pull pot as the QuickSwitch but the push/pull has only 2 positions so you get mag/acoustic instead of mag/both/acoustic.

Mag Bypass Push/Pull - Scheme 1
This bypass switch can be installed if you would like connect your magnetic pickups directly to the output (bypassing the Acousti-Phonic) and simultaneously forcing the board to stop consuming battery power. This can be used in the case that the battery dies and you still want to be able to play your magnetic pickups.  
*Please note that there will be an audible “thump” sound when the Acousti-Phonic is turned on

Mag Bypass Push/Pull - Scheme 2
This bypass switch can be installed if you would like connect your magnetic pickups directly to the output (bypassing the Acousti-Phonic) but will keep the battery connected when in the bypass mode. This will more applicable for live performance. The added passive components are used to ensure that the power switching of the Acousti-Phonic still works normally (even when the switch is in the bypassed position)
*Passive components available from Graph Tech upon special request 

 Blend Pot         

Wire a blend pot to an Acousti-Phonic.  It's the same as a regular Acousti-Phonic installation, only the mag pot is reverse0wired to work in the opposite direction.  Note that you actually get more control over your sound with separate pots because it allows you to control how hard each pickup drives effects down the line.  A blend pot always mixes one signal at full-volume with the other at partial volume.

Custom Jacks

TRS Jack
This operates the Acousti-Phonic in Mono mode only with power switched by the Ring and Sleeve contacts of a standard, stereo, TRS jack.  This may be a useful option for guitars that can't use the Stereo Switched Jack, such a those with a deep barrel jack.  There is no stereo mode available in this configuration.

Switched Barrel Jack
This is a solution for guitars with deep barrel jacks.  The Switchcraft Switchjack has four lugs like the Stereo Switched Jack that comes with the Acousti-Phonic, but the switch works in the opposite way, so it can't be wired the same.  This wiring delivers both Mono and Stereo modes.  Note the Switchjack is designed for acoustic guitars and comes with a strap-nut, but this can be removed and replace with a regular but for use with electric guitars.

Mag Bypass Stereo Jack
The mags go straight to the ring of the Stereo Switched jack, instead of going through the Acousti-Phonic (true bypass).  There is no blended (mono) mode available in this configuration.  When you insert a stereo 1/4" plug you get mags on the Ring and acoustic on the Tip.  When you insert a mono 1/4" plug, you get acoustic on the Tip only.  The Acousti-Phonic is held in mono mode by grounding the ring contact permanently, but the signal going into it is acoustic, so that's all that appears on the Tip.

Dual Jacks

Dual Jack Magnetic
This clever circuit requires a second Stereo Switched Jack.  When you plug into the second jack, you get your magnetic pickups straight out (true bypass).  Acoustic sound in available on the first jack but the second jack empty, the first jack has both magnetic and acoustic, in either Mono or Stereo mode.

Dual Jack Mag Bypass
Mags go straight out to one 1/4" jack (true bypass) and acoustic goes to another 1/4" jack, the Stereo Switched Jack that comes with the Acousti-Phonic.  The Acousti-Phonic is help in mono mode by grounding the ring contact permanently, but the only signal going into it is acoustic, so that's all that appears on the Tip.  There is no Blend mode in this configuration.

Dual Jack Blend
Dual jacks with blended signals available when a mono plug is inserted in the Stereo Switched Jack only.  When a mono 1/4" plug is inserted the second jack (also a Stereo Switched Jack), mag is on the first