the dualing lpb's

[foxfire]

i've read a few posts here and there about chaining boosters together and i was board today so i bread boarded a pair of lpb's in series and i liked what i heard. i played with a few values added a few switches. anyway i'm sure i'll mess with it a good bit more and if you have suggestion feel free to suggest it. 

http://www.aronnelson.com/gallery/main.php/v/foxfire/SCHEMATICS_001/2LPB+SCHEMATIC+VR_1.png.html?g2_imageViewsIndex=1

[foxfire]

i've been playing with it a bit more. i became tired of all the options possible with this circuit and decided to just stop and build. so far i really like it but i hardly call standing 4 feet in front of my amp down in my basement a proper test...my head still hurts. i set up the first stage to give a "treblely" boost and the second gives the distortion. i may end up adding a gain pot in front of the second stage.

my goals were to have a "treble" booster and to be able to add some dirt to it. what i built does both well.

http://www.aronnelson.com/gallery/main.php/v/foxfire/SCHEMATICS_001/DUELING+LPB_S+SCHEMATIC.png.html?g2_imageViewsIndex=1

[Derringer]

You've already got a V-4.


What more boost/dist. do you need?


Looks like a cool pedal man. I imagine that you'll be able to get some good lead tones from that pushing all those tubes.!

[foxfire]

so far i've only run it though my sound city so i'm curious to see how it reacts to different amps. it's a loud pedal and i still have a headache.

[Barcode80]

just for fun, slap some diodes on the output on a switch. the lb sounds great with diode clipping IMHO.

[foxfire]

yup, it does sound good with a pair of clippers at the end. i was tempted but i kind of liked the "wide open" sound without them. there are a ton and a half of things you can do to this circuit. i think i remember reading about someone running 3 lpb's in series? for now at least want to keep it simple and will have to hear it though some more amps before i can call it done.   

[foxfire]

just an update i changed the tail end of the first stage. the way i had it before caused a pop on SW2 because i didn't have a cap in front of it. the link above is to the updated schematic. oh and i added a 300kB gain pot in front of R6 and C5 on my build. i think it'll come in handy.

[MikeH]

i think i remember reading about someone running 3 lpb's in series?

If you do it with SHOs you get the nuts and bolts of a Box of Rock so I think it could work nicely with LPBs toos