schematic search?!!!

Started by doug deeper, November 15, 2004, 08:50:50 PM

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brian wenz

Hello Hello Doug--
    You still here??
Brian.

brian wenz

Hello Dan N.--
  What exactly happens when you jumper the  fuzz control??  
Brian.

Dan N

Hi Brian,

More volume and brighter tone. The fuzz pot is an oddly wired mixer or blend between the first transistor and the 2 transistor circuit. Even maxed, it is still like a 50K resistor is clogging your signal.

Rewiring the pot as mentioned in this thread should do the same thing. I don't want to mess up my original by improving it!

The old Japanese 6 transistor fuzz wahs used a mixer for the "intensity" pot, but they got it right.

Dan

brian wenz

Hello Dan  [and anybody else still listening..]
          I just finished building Version II  [Version I had long since made it back to the parts bin]  and I think I like this fuzz!   The aforementioned fuzz pot re-wire helps but I put in a switch that bypasses the filter stage at the end of the circuit and now it's "Double Fuzz"!   I used BC183C trannys.
I was thinking of getting rid of the fuzz pot altogether but I actually like the variation it provides.
Gonna check my voltages with yours....
Brian.

brian wenz

Hello Hello Nightingale---
      HEY RYAN !!---
         I think you might like this thing!   It combines well with gainey amp settings.
Brian.

nightingale

thanks brian~
i plan to get some bench time in tomorrow. i will breadboard one up tomorrow. i'm a little bored with my FF circuits right now.
i've actaully been using an od-250 type circuit with germ diode clippers for my "main" fuzz the last two nights.  i've even been playing my old twin reverb with two power tubes pulled. i'm not sure whats come over me..

which schemmo did you build? the greenfuz one?

fuzz on,
be well,
ryanS
www.moccasinmusic.com

brian wenz

Hello Helloo--
  Ryan--  Weren't you using Phillips' Liquid Drive??
 I used my own hand-drawn schematic.  I'm not sure if I originally got it from Greenfuz or the other site but I'm pretty sure they're the same.
Try bypassing the filter circuit and see how you like it [I think I'm gonna put a full-time switch in mine to chose between the two...].  
Yeah, I've been getting  a little bored with the same old Fuzz Face circuit, too.   I think there's some cool lower-gain circuits that might sound great through a slightly overdriven amp.  [I REALLY like the germ. Fuzzrite].
Good luck and lemme know what you think.
Brian.

nightingale

brian~
i think i have a chunk of perf laying around with the shin-ie on it. after looking at the schemo again, i 'm sure i messed up somewhere on my nf-pf conversions.. it was almost 2yr ago.
Quote
Ryan-- Weren't you using Phillips' Liquid Drive??

the od-250 i have been playing has been almost completely coverted to a "liquid drive". except i have the pot wired backwards instead of the reverse audio. i have the asym germ diode clipping going on, and i really like it.

the last batch of PCB's i etched consisted of:

tonepad dist +[liquid drive].. for a new LD build

2 tranny zonk machine

mosrite fuzzrite

gretsch contro fuzz

Rodent

i populated the controfuzz board and after my 1st listen, i decided that wasn't into the mixed fuzz/clean thing.. so with some suggestion from mark hammer i ditched  the clean part of the circuit. this left me with a distortion + type circuit with 1n4001's clipping, and a gain recovery stage form the othe part of the chip.. gain of 20!
i would say it is somewhere between a BMP, and a rat.. high, high, gain/fuzz output..

as you recomended i populated the fuzzrite with some really low gain trannys those 2n2369a's that i got from mouser.. most have gain of 70 or so. i dont have any low gain germs at this time..
i put those in the fuzzrite board and it sounded pretty decent a little gatey on the decay tho.. need to mess with the biasing resistance..
also the input cap need a little beef up! havn't had a chance to test it live yet..

built myself a rodent for overdrive/boost needs.. it looks pretty on my baord but i only use it here and there.. good to have tho!

as for the liquid, and the zonk.. they are on standby. hope to get those up and running soon.. really curious about the zonk..

i'm going into the studio to do some vocs today. i'll be finishad arounf 4 or so.. i plan on coming home and hitting the bench pretyy hard..
i've been burnt on my FF's, tonebender, axis, RM.. i'be been enjoying the sound of this late 70's master volume twin, with 2 power tubes pulled, a bunch of mods from aspen pittmans book,  a jfet booster, and the od250 spankingthe tubes really hard..

thats what i've been up to man!

i'll get back here later..
fuzz on,
be well,
ryanS
www.moccasinmusic.com

brian wenz

Hello Hello--
  Ryan--   Try building a Fuzzrite with medium gain germaniums and the schematic that's at that Japanese site that was linked to from here awhile back  [real close to the Shin-Ei Companion Fuzz that we've been talking about....].   Yeah, you may like a little more "beef" in yer Fuzzrite circuit....I prefer the smaller value caps 'cuz I'm using it with a class-A EL-84 amp that needs a bit less low end to cut through the mix.
Careful about pulling tha power tubes on yer Twin......it changes the impedance to your speaker load.
Good luck with the vocals!  Is this for your band or a solo project??
Brian.

nightingale

thanks for the heads up brian~
i will change the vlues on my mosrite fuzzrite board to more suit the japanese fuzzrite schemo. i will also drop some med gain tranny's in the sockets, and see how she plays..

i have to take my wah apart today, and unmod it a little..  it's an early eighties crybaby. i did all of the mods from the greenfuz site and it is alittle too crazy.. it gets too bright! i need to mess with the treble cap value a bit..
i love wah! nothing like a raw  fuzzed-out overloading wah solo.      

QuoteCareful about pulling tha power tubes on yer Twin......it changes the impedance to your speaker load.                                            

yeah,
i have a new set of jenson c12ns in there.. and they are wired up properly.. i'm just not really sure how hard it is on the PT to run it like this?


i am actually looking for another 70's twin.. i really dig the 100watt ones that everyone bags on.. i'll have two, one set for my mids/highs, and the other with the lows.. mic'ed wide!
Quote
Good luck with the vocals! Is this for your band or a solo project??

for the band~[Nightingale]
the vocs went well.. i took my stage center with me and i used it on a few parts. i think it sounds great, but i did build the thing..lol!

i'll try messing around with the fuzzrite circuit a little, i'll let you know what i come up with..
be well,
ryanS
www.moccasinmusic.com

brian wenz

Hello Hello--
   Ryan-  Are you still going to give the Shin Ei Companion a try??  I think it might be worth keeping ........pretty strange little fuzz.
 Have you ever checked out a band called The Creation??   [English,  mid-to-late 60's]  If you like pop-psych give 'em a try!
Brian.

brian wenz

Hello Hello Ryan--
      Try bypassing the filter, too!
Brian.

brian wenz

Hello Hello--
     I've been checking a bunch of Shin-Ei schematics [Univox Super Fuzz, etc.] and  noticed that they used that  filter circuit ["notch filter"] in a few of  their circuits.  I think somebody mentioned awhile back about trying the "notch filter" in some other circuits.  Tacking it on to the end of a Fuzz Face???    Hmmmmmmm...
Brian.