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I just got my Armstrong P-90, it came with a 2 meg pot taped to the outside of the box. Any suggestions?

Good question! Why not just wire it straight to the output jack! There's a reason people tend not to go much beyong 500k...but maybe Dan Armstrong knows better?

If you've got a tone control you that gives you a good range of cut (subtle in the upper half, but still effective at warming the guitar up without removing the clarity) then you might want to give it a whirl as a volume control,especially if you find your self getting a bit muddy or your rig is not as open as you'd like (a bit to much mids and not enough top end sparkle). Other than that if you are happy with what you got toss in a drawer and use it as a spare if you ever need it.

My SG could use some warmin'. I think it's got 300K volume and tone pots. The tone control is fine, so maybe I'll use it as a volume. Whick pot would affect brightness more, or is it equal in the circuit?


Originally Posted by big_blackI just got my Armstrong P-90, it came with a 2 meg pot taped to the outside of the box. Any suggestions?

You can sold a 2Meg resistance in parallel with the 2nd and 3rd terminal (the midle one and the ground one) and it will behave similar to a 1Meg pot. Add a 1Meg resistance and it will became a 500K pot... etc.


Originally Posted by big_blackMy SG could use some warmin'. I think it's got 300K volume and tone pots. The tone control is fine, so maybe I'll use it as a volume. Whick pot would affect brightness more, or is it equal in the circuit?

Well, the 2Meg will open up and brighten the instrument compared to a 250k or 500k (or even 1Meg) ... I just find them a bit more useful as volume controls (assuming it is an audio taper). As far as whether the 2Meg used as a volume or a tone will be brighter, well different people report different perceived effects, the problem with using one as a tone control is the effect is similar to a no load tone control, except that the tone doesn't do as much in the upper part of it's rotation (if it's a linear taper the problem is even worse), in most cases it's better to use a no load in that case. As a volume though they tend to work better,if you use any HPF on the volume control it's effect gets exaggerated ... whether this is good or bad depends on what one is looking for tone wise. Si, if you're looking for warming up, well you might want to toss it in a drawer as a spare ... Now, if you had a muddy guitar with say a custom custom that needed opening up on the high end ... well that might work out very well there.

What is quot;HPFquot;?


Originally Posted by big_blackWhat is quot;HPFquot;?

High Pass Filter ... either a capacitor or resistor and capacitor arrangement across the hot lug and wiper of the volume pot (it's job is to boost the highs as the volume control is lowered, and have no effect when at full volume) ... Some people like to call them *volume kits* as well ... some even call them treble bleeds, but I don't even remotely like that term because it sounds more like what a tone control does ... Kinda like my stance on calling a coil tap and a split the same thing, a coil tap is pretty much the universal argreed term, as splitting a HB is still done from a *tap* point between the two coils ...off topic but still.