~El Julio~ a écrit :
Et a propos de keeley, pourrais-tu mettre le mod de la Boss BD-2 Blues Driver s'il te plait?
COMPOSANT/DORIGINE/A MODIFIER
C14 .047 uf .22 uf
C8 .0022 uf .1 uf
C17 .0068 uf .1 uf
C19 .0056 uf .1 uf
C18 .1 uf .01 uf
C9 .056 uf Removed-NO
JUMPER
D8 Led
D10 Led
D9 Jumper
These combined changes will add a lot
of ‘body’ to the tone, making it much
fuller, thicker, more responsive.
C100
(tone pot
cap)
.01 uf .047 uf
Adds bottom end, reduces “icepick” highs
Tube mod
c14 .1
c17 .01
c19 .047
c8 .22
Changes the tone into a sweeter, rounder tone.
Not as ‘tinny’.
C34 .22 Adds more bass, takes away treble.
Tone control
cap-c100
.047 will add bass and better tone control
diodes:
D9 LED
d10 Germanium
1n34a or
1n270
Will make the clipping (distortion) full, and responsive.
79
‘Hot Rod’ mod
location Stock Value mod value What it does
c14 .047 .1
c17 .0068 .01
c19 .056 .004 (or for
more midsremove
the cap)
c8 .002 .22
c9 .056 remove
Changes the tone into a
sweeter, rounder tone.
Not as ‘tinny’.
Tone control
cap
.047 will add bass and better
tone control
diodes:
d7 1n4001 Makes the clipping a little
more responsive, yet
smooth
d10 led
Brent Mason mod
location Stock Value mod value What it does
c14 .047 .1
c17 .0068 .01
c19 .056 .01
c8 .002 .22
c9 .056 .047
Changes the tone into a
sweeter, rounder tone.
Not as ‘tinny’.
Tone control
cap
.047 will add bass and better
tone control
diodes:
D9 1n4148 Led & .001 uf
OR
.0047 uf cap in
parallel
d10 1n4148 led
D3 1n4148 led
Will make the
distortion/overdrive much
fuller, thicker, more
responsive to picking
80
EXTRA’S
R26 5.6k 1k or so Lower value for more bass
R38 100k 47k, 22k, 10k Lower value for more distortion
R34 2.2k 1k Lower value for more distortion
R31 1.5k 2.2k, 3.3k,
4.7k
Raise value for less highs
The midrange problem some folks hear can probably be best changed by swapping out different values for C9 and
C16. These set the resonant frequency for the simulated inductor and C9.
If you need more gain: Try changing r38 to a 2.2k or 10k and changing r34 to a 1k.
Also, connect a 10uf cap in parallel with r30, and another at r35. This should give you
a ton of distortion, possibly too much, so do one change at a time. NOTE: Make sure
that the electrolytic caps have their negative side going to ground there (one side of
each of those resistors goes to ground).
bd-2 Fuzz Mod
location Stock Value mod value What it does
Q10 & R29 ADD 1UF CAP AS
SHOWN
Adds a hint of octave,
extreme fluttering fuzz
Tone control
cap
C100, directly
under tone pot
.047
will add bass and better
tone control
Bd-2 Keeley “fuzz freak” mod
Location Mod value
C1, C15, C6, C13, C7 10UF TANTALUM
C14, C34 .1UF METAL FILM
C36, C35 .047 METAL FILM
C20, C25 100PF SILVER MICA
C21, C23 47PF SILVER MICA
C26 220PF SILVER MICA
C100 (ON TONE POT
CIRCUITBOARD)
.033UF, .068UF FOR PHAT SWITCH
D1 OC44 GERMANIUM TRANSISTORS,
CONNECTED AS DIODES (2 IN SERIES).
VERY SIMILAR EFFECT CAN BE HAD BY
SIMPLY USING 1N34A OR 1N270A
GERMANIUM DIODES INSTEAD.
D7, D8 1N60 OR 1N48 GERMANIUM DIODES.
VERY SIMILAR EFFECT CAN BE HAD BY
SIMPLY USING 1N34A OR 1N270A
GERMANIUM DIODES INSTEAD.
Bd-2 Keeley Standard mod + phat mod
Location Mod value
C1, C15, C6, C13, C7 10UF TANTALUM
C14, C34 .1UF METAL FILM
C36, C35 .047 METAL FILM
C20, C25 100PF SILVER MICA
C21, C23 47PF SILVER MICA
C26 220PF SILVER MICA
C100 (ON TONE POT
CIRCUITBOARD)
.033UF, .068UF FOR PHAT SWITCH
D9 INSTALL JUMPER AT D9
