Xotic BB plus [traced]
Posted: 07 Oct 2012, 22:16
hello!!
Please excuse my english!, i'm writing from chile!
i'm starting this topic since it wasn't created yet!...searching at google found this pics!
I would like to know how the add ons of this pedal are made... as everybody knows its a refined tubescreamer with active tonestack... but in the simple version there is only bass and treble so here is the first question...
how we can add to the simple bb schematic a mid control?, it necessary must be an active circuit?
A second switch works with the compression of the pedal... From the mannual:
" CH-B comp Switch: Switch between two different cut off frecuencies the same as ch-A but
offer slightly more gain and different frecuencies.
-Button down (hard) offers corner freq @ 350Hz
-Button up (soft) offers corner freq @500 Hz."
does anyone know how this could be added?...(is this related to Diodes?...see the pictures different diode clipping than the simple bb preamp??....recently i looked at the super lead mid switch... it's a spdt between 2 different types of diodes...)
and finally... how the "a>b & b>a" switch is implemented?
here is what i found...
thanks so much!
Diode clipping
No goop... again... check the diode clipping maybe 1N400x, blue diodes (shottky??), led...
what if we consider to work on the schematic provided by madbean in the glitterati project?
Here it is...
Please excuse my english!, i'm writing from chile!
i'm starting this topic since it wasn't created yet!...searching at google found this pics!
I would like to know how the add ons of this pedal are made... as everybody knows its a refined tubescreamer with active tonestack... but in the simple version there is only bass and treble so here is the first question...
how we can add to the simple bb schematic a mid control?, it necessary must be an active circuit?
A second switch works with the compression of the pedal... From the mannual:
" CH-B comp Switch: Switch between two different cut off frecuencies the same as ch-A but
offer slightly more gain and different frecuencies.
-Button down (hard) offers corner freq @ 350Hz
-Button up (soft) offers corner freq @500 Hz."
does anyone know how this could be added?...(is this related to Diodes?...see the pictures different diode clipping than the simple bb preamp??....recently i looked at the super lead mid switch... it's a spdt between 2 different types of diodes...)
and finally... how the "a>b & b>a" switch is implemented?
here is what i found...
thanks so much!
Diode clipping
No goop... again... check the diode clipping maybe 1N400x, blue diodes (shottky??), led...
what if we consider to work on the schematic provided by madbean in the glitterati project?
Here it is...