G&L PTB wiring for Legacies - schematic?
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ItsaBass
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Re: G&L PTB wiring for Legacies - schematic?
It's pretty simple to figure out. The basic idea behind it is that when you siphon off a signal through a cap to ground, you have a control that removes treble. However, when you force the hot signal through a cap, you have a control that removes bass. In the PTB system, the treble control is the former, and the bass control is the latter. Knowing that, you can figure out a couple of different ways to wire it up. But the way G&L do it is like so:
- Your pots go V/T/B = 250K A, 500K A, 1M C (A = audio taper; C = reverse audio taper).
- Your caps are .022uF treble and .0022uF bass
- The pickups hook up to the switch like a Strat
- The output from the switch goes to lug 1 on the treble pot, then from there to lug 2 of the bass pot
- The treble pot's cap goes between lug 2 and the back of the pot
- The bass pot's cap goes between lugs 2 and 3
- A wire runs between lug 3 on the bass pot and lug 3 on the volume pot
- Your output wire runs between lug 2 on the volume pot and the jack's hot lug
Now for the grounds:
- The p/u grounds, the claw ground wire, and lug 3 of the volume pot all connect to the back of the pot
- A ground wire runs from the back of the volume pot, from there to the back of the treble pot, from there to the back of the bass pot, and from there to the ground lug of the jack
...and that's it. It's a simple system. It's only drawback is that the tone controls are both master controls. So you can't set one pickup one way and another pickup another way.
It's pretty simple to figure out. The basic idea behind it is that when you siphon off a signal through a cap to ground, you have a control that removes treble. However, when you force the hot signal through a cap, you have a control that removes bass. In the PTB system, the treble control is the former, and the bass control is the latter. Knowing that, you can figure out a couple of different ways to wire it up. But the way G&L do it is like so:
- Your pots go V/T/B = 250K A, 500K A, 1M C (A = audio taper; C = reverse audio taper).
- Your caps are .022uF treble and .0022uF bass
- The pickups hook up to the switch like a Strat
- The output from the switch goes to lug 1 on the treble pot, then from there to lug 2 of the bass pot
- The treble pot's cap goes between lug 2 and the back of the pot
- The bass pot's cap goes between lugs 2 and 3
- A wire runs between lug 3 on the bass pot and lug 3 on the volume pot
- Your output wire runs between lug 2 on the volume pot and the jack's hot lug
Now for the grounds:
- The p/u grounds, the claw ground wire, and lug 3 of the volume pot all connect to the back of the pot
- A ground wire runs from the back of the volume pot, from there to the back of the treble pot, from there to the back of the bass pot, and from there to the ground lug of the jack
...and that's it. It's a simple system. It's only drawback is that the tone controls are both master controls. So you can't set one pickup one way and another pickup another way.
Boogie Bill
New member
Re: G&L PTB wiring for Legacies - schematic?
There are accurate schematics at the G&L Discussion Page at www.guitarsbyleo.com.
Bill
There are accurate schematics at the G&L Discussion Page at www.guitarsbyleo.com.
Bill
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