Pots for P90?

paulnb57

Im a bit of a retard when it comes to pots of the volume and tone variety. Ive just put a GSP LP jr together and am wondering what value pots to use 240k 300k 500k different values for vol and tone or the same? 

I like the way my LP Melody maker works but have no idea of the size of pots in it even after removing the cavity cover.....1 x P90 1 vol 1 tone about 2004 vintage 

What do you reckon folks?

Adam_MD

500k usually for p90s

meltedbuzzbox

Adam_MD said:

500k usually for p90s

I would go with that too

paulnb57

Thanks chaps! Idiot question A or B pots? 

 Thanks! 

 Paul

Adam_MD

I use audio taper for volume and tone myself. I don't mind linear for tone but not volume pots.

ICBM

Log for both, or linear for volume depending on personal taste. Linear doesn't work properly for tone unless you want it to act like a switch which goes from bright to mud at about 2 on the knob. (Or unless it's a very low value, as Gibson and a few others occasionally used, but then you get no bright sound at all.)

If you want to mix values I prefer lower for volume and higher for tone, not the other way round.

paulnb57

Thanks for the replies folks, it helped a lot! I also had a moment of clarity a tried the Gibson website, discovered I could ask a tech question based on my Melody Maker serial number, the reply Was, 500k pots and an 022 cap, so that what Ive ordered for the GSP Jr....

ESchap

Wire it 50's style, your tone will thank you

paulnb57

ESchap said:

Wire it 50's style, your tone will thank you

How does 50's style work? Diagram/link? Paul

ICBM

Connect the tone control (the cap or the wire that goes to the tone pot, whichever it is) to the middle terminal of the volume pot not the top terminal.

It retains treble better as you turn the volume control down.

paulnb57

Thanks, I managed to find a picture via Google

 http://i260.photobucket.com/albums/ii21/paulnb57/imagejpg1_zpsbe6e0b3c.jpg

ICBM

That's correct. Don't worry if the two connections on the tone control are the other way round, or if the cap is on the tone pot itself with a wire where the cap is in the diagram - it makes no difference. It's only the connection at the volume control that matters.

ESchap

Thanks @ICBM.  ;

Here's a diagram if it helps.  The tone pot middle lug should either be grounded on the pot body either be bending it back and soldering or using a piece of wire to effect the same.

Another thing you could try is a no load tone pot.  I've got one in the bridge of a P90 SG special I have and it does allow a little extra rawk    from the P90 if that's what you want, as soon as you move the tone control off ten, it's back to normal. 

ESchap

oops .. no idea why both your earlier posts didn't show up when I looked earlier!  .. sorry for duplicating  >:D<