PTB system and 'No load' pots

The place to discuss, post photos, video, and audio of the G&L products (US instruments, stomp boxes, etc.) produced after 1991, including the amps & gear we use with them.
JD0x0
Posts: 45
Joined: Wed Mar 25, 2015 11:40 am

PTB system and 'No load' pots

Post by JD0x0 »

I'm curious if the PTB system will function correctly with 'no load' pots for the treble and bass roll off.
NickHorne
Posts: 785
Joined: Wed May 26, 2010 11:44 am
Location: England

Re: PTB system and 'No load' pots

Post by NickHorne »

Replacing the treble control with a no-load will have the usual result, of a somewhat stronger resonant peak from the pickups, and at a higher frequency, when the control is at "10".
With Legacy pickups, this will be pretty much what you would expect from the same mod in a Strat, as the pickups are generally comparable designs.
With MFD pickups, there will already be considerably more brightness available, and a no-load will liberate even more. Only you can decide whether you like that.
But the circuit will "work".

BUT a no-load pot in the BASS control will be be:
1: Almost pointless. It would give some increase in the bass CUT available, but this is unlikely to be useful. It would be sudden, at the very end of the knob's rotation, and be thin-sounding.
2: Difficult or impossible to implement; the Bass control uses a reverse-log pot, and it's unlikely that no-load versions of these exist. You could, just possibly, convert a regular one to no-load operation by opening it up, removing the track wafer and then carefully shaving away the last bit of track. But I don't think you would like the result as much as you might be imagining. And you would be risking the introduction of dust etc into the pot, and indeed into the control cavity, which is not good for even short-term crackle-free happiness.
Not worth the bother or the risk to mod the bass control.

But the treble end would behave as you would expect, with a no-load.
Hirsoshiro
Posts: 2
Joined: Tue May 05, 2015 11:45 pm

Re: PTB system and 'No load' pots

Post by Hirsoshiro »

Glad to have read this content.