LPB1, 500k pot ok?

[Joecool85]

I'm looking at building a LPB1 and putting it onboard my Lyon, so it would be using the 500k audio pot that is already in there for volume.  Would this work ok?  The schematic calls for a 100k pot, what happens when you use larger ones?

[burnt fingers]

500k should work fine, it may change the sound a little but you probably won't notice the difference.

The worst that will happen is you don't like it and you go get a 100k.

Scott

[Joecool85]

Sort of.  If I run a 100k though it will be crappy when on passive.  I'm having it set up with a DPDT toggle so that it will either go:

pickup -> volume/tone -> out

or

pickup -> LPB1 -> volume/tone -> out

So it'd be nice if I didn't have to add a pot or anything, I want it to run "full power" into the stock volume/tone section on the guitar.

[petemoore]

I'm looking at building a LPB1 and putting it onboard my Lyon, so it would be using the 500k audio pot that is already in there for volume.
  I would stick with the stock value for adjusting the pickups volume on the guitar.
   Would this work ok?  The schematic calls for a 100k pot, what happens when you use larger ones?
  Not hing too much that you can't live with or get to adjust 'right'...500k is still a voltage divider which can be used as a volume control for...whatever you want a volume control on.
  Differences are small but...
  Changing the resisance in the path to ground from the signal path [through "X" value 'volume' pot..determines how much signal always gets shunted  to ground through the R value of it's wafer..500k resists more and so less signal would be shunted to ground, and so it'll let more signal out, be a touch louder, and higher *output impedance...probably just fine for all intended purposes..ya never really know till you do.
  As a 500k is turned to half way, the series resistance gets large [measure to EZ-Calc what an audio taper provides there], series resistance ITCase is between pot input and pot output...large series resistances here can roll treble off...and be compensated for useing a Small bypass capacitor...but then again, with SC pickups in non-boost function...might get too trebley when you roll off the volume.
  You should be able to reach a compromise of treble rolled off, by not using a cap or using a smaller cap or...
  I don't know if there'd be room for an LPB, Battery, and 100k DPDT pot...the kind you pull the knob to actuate the DPDT...but I'd try working with the Lyons pot, probably just put the LPB in there for starters and see what happens...might be exactly what you want, but for certain the setting for pickup volume will be Blasting at that setting with the booster in place...you could alternatively tame the booster to do 'above unity', so this difference is not so...blasting when you hit that switch.
 

  I have a black Lyon .
 
 

[Joecool85]

Wow, good stuff pete, thanks.  Whats your Lyon look like?  Mine is a mid 90s LG-4/BK so it looks sorta like a LP.  Also, I've been considering throwing in a trimpot between the LPB1 and the volume/tone control on the guitar so that I could turn it down to unity-ish level.

[petemoore]

andWow, good stuff pete, thanks.  Whats your Lyon look like?
  Black 'n White, 3SC, 5 way Sw., strat-ish.
    Mine is a mid 90s LG-4/BK so it looks sorta like a LP. 
Also, I've been considering throwing in a trimpot between the LPB1 and the volume/tone control on the guitar so that I could turn it down to unity-ish level.
  I mentioned a 100k *DPDT* pot..pullshaft for effect on/push in for effect bypass, 100k pot takes up diameter space like a ~small pot..[it's taller inside tho, by about the size of a small DPDT like RS sells].

[Joecool85]

I don't know if I want knob were the switch goes up top though.  Also, with those is the pot always working as a pot or is it bypassed when pressed in?  Because I don't want two volume controls for the passive selection.

[petemoore]

 Also, with those is the pot always working as a pot or is it bypassed when pressed in?  Because I don't want two volume controls for the passive selection.
  Mine went Pickups to volume controls and switch, then *DPDT bypassed or through the booster [and it's 100k volume pot and  [push/pull *switch], this allowed to backing off the volume before the booster.

[Joecool85]

Alright, I'll see what happens with everything.