Best way to install a master volume on a fuzz



Moderator: Ghost Hip

Forum rules
The DIY forum is for personal projects (things that are not for sale, not in production), info sharing, peer to peer assistance. No backdoor spamming (DIY posts that are actually advertisements for your business). No clones of in-production pedals. If you have concerns or questions, feel free to PM admin. Thanks so much!

Best way to install a master volume on a fuzz

Postby MechaGodzilla » Sat Aug 25, 2018 6:19 pm

I have a dizzy tone clone and it's fucking amazing but it has no real volume control. I'm guessing I *could* just stick a pot before the output (100k linear?) but even at minimum resistance, would it load the signal somewhat? What about a switching pot that disconnected itself when I didn't want it?
MechaGodzilla

User avatar
FAMOUS
FAMOUS
 
Posts: 1737
Joined: Wed Jun 26, 2013 11:19 am

Re: Best way to install a master volume on a fuzz

Postby BetterOffShred » Sat Aug 25, 2018 7:11 pm

Yeah see basically any schematic for a fuzz with a volume will be a 50-100k audio pot at the end of the circuit. See the fz-1a schematic. That works great imo. You can of course use bigger sizes but for most circuits I've been happy with 50-100k audio taper
BetterOffShred

User avatar
IAMILFFAMOUS
IAMILFFAMOUS
 
Posts: 3254
Joined: Thu Aug 17, 2017 2:01 pm

Re: Best way to install a master volume on a fuzz

Postby crochambeau » Sat Aug 25, 2018 7:13 pm

100K load from the collector is a pretty light load. 100K is kind of my go-to, and I've driven 10K input sections which increases the load by an order of magnitude with minimal affect (600 ohm loads are another matter). Granted, I haven't done it with the circuit you mention, but a voltage divider at circuit output is easy to reverse (unless you're cutting holes in the case).
D.o.S. wrote:This thing is like the Blue Box on the amount of acid that lands you in the ER pretending to play it straight while you try and ignore the fact that the walls are dripping oil.


Rochambeau Musical Apparatus
Reverb storefront
Shark Tank
crochambeau

User avatar
FAMOUS
FAMOUS
 
Posts: 1746
Joined: Mon Jul 20, 2015 12:49 pm
Location: Cascadia

Re: Best way to install a master volume on a fuzz

Postby goroth » Sun Aug 26, 2018 2:22 am

If a pot changes the sound or doesn’t work as expected you could put a simple booster afterwards.
D.o.S. wrote:Slow down there Hall & Nopes that's a lot of melons for a meatbox.

Debut album droppedJan 5. Fuck yeah. http://open.spotify.com/album/0vXjnDeyPNfeXWNvQRYP1H
My band /// Instagram ///Facebook ///
goroth

User avatar
HERO
HERO
 
Posts: 11637
Joined: Wed Jan 25, 2012 3:50 am
Location: Eurothrash: Frozen northern outpost.

Re: Best way to install a master volume on a fuzz

Postby MechaGodzilla » Sun Aug 26, 2018 6:26 am

crochambeau wrote: but a voltage divider at circuit output is easy to reverse (unless you're cutting holes in the case).

ya, gonna have to do that, ruining the lovely symmetry of the 3-knobs format :grumpy: . I know I've seen buzzarounds/dizzys built by ghost and castledine in a 4-knob format with volume so I imagine they have a pretty decent idea what works best, might check in with them.
MechaGodzilla

User avatar
FAMOUS
FAMOUS
 
Posts: 1737
Joined: Wed Jun 26, 2013 11:19 am

Re: Best way to install a master volume on a fuzz

Postby rustywire » Sun Aug 26, 2018 11:26 am

goroth wrote:If a pot changes the sound or doesn’t work as expected you could put a simple booster afterwards.

This is what I came to suggest, but in the form of an EQ with master boost/attenuate capabilities. They can be had for like $30-50 for graphic and a little more for parametrics. Worth it for the utility!
[B/S/T shoutouts] Shortlist: Hollow Earth|Ct5|856|Condor|Thermae|OP-1|half track reel2reel|Prophet6 ... :whoa:
rfurtkamp wrote:The only transparent thing I own is a set of drinking glasses.
Image
rustywire

User avatar
IAMILFFAMOUS
IAMILFFAMOUS
 
Posts: 4718
Joined: Thu Dec 13, 2012 9:54 am
Location: on.

Re: Best way to install a master volume on a fuzz

Postby crochambeau » Sun Aug 26, 2018 12:44 pm

MechaGodzilla wrote:
crochambeau wrote: but a voltage divider at circuit output is easy to reverse (unless you're cutting holes in the case).

ya, gonna have to do that, ruining the lovely symmetry of the 3-knobs format :grumpy:


You can use a concentric/stacked pot, but it drastically hinders knob selection.
D.o.S. wrote:This thing is like the Blue Box on the amount of acid that lands you in the ER pretending to play it straight while you try and ignore the fact that the walls are dripping oil.


Rochambeau Musical Apparatus
Reverb storefront
Shark Tank
crochambeau

User avatar
FAMOUS
FAMOUS
 
Posts: 1746
Joined: Mon Jul 20, 2015 12:49 pm
Location: Cascadia

Re: Best way to install a master volume on a fuzz

Postby MechaGodzilla » Sun Aug 26, 2018 4:31 pm

rustywire wrote:
goroth wrote:If a pot changes the sound or doesn’t work as expected you could put a simple booster afterwards.

This is what I came to suggest, but in the form of an EQ with master boost/attenuate capabilities. They can be had for like $30-50 for graphic and a little more for parametrics. Worth it for the utility!

not worth it for a whole extra pedal on my board???
MechaGodzilla

User avatar
FAMOUS
FAMOUS
 
Posts: 1737
Joined: Wed Jun 26, 2013 11:19 am

Re: Best way to install a master volume on a fuzz

Postby Dr. Sherman Sticks M.D. » Mon Aug 27, 2018 11:20 am

i took it as adding a booster circuit inside your existing enclosure :idk:
Dr. Sherman Sticks M.D.

User avatar
IAMILFFAMOUS
IAMILFFAMOUS
 
Posts: 4012
Joined: Tue Aug 28, 2007 8:01 pm
Location: rochester, ny

Re: Best way to install a master volume on a fuzz

Postby MechaGodzilla » Mon Aug 27, 2018 11:30 am

Maybe I could stick an sho on the output, I think I'd be ok with that. I guess it would boost the super-zippy fuzz sounds that are a bit quiet, but it wouldn't help to attenuate the huge tonebender-y sounds (normal sho at zero isn't "off", it's just no boost)
MechaGodzilla

User avatar
FAMOUS
FAMOUS
 
Posts: 1737
Joined: Wed Jun 26, 2013 11:19 am

Re: Best way to install a master volume on a fuzz

Postby Dr. Sherman Sticks M.D. » Mon Aug 27, 2018 11:41 am

even the SHO schematics show a voltage divider pot at the output to add a master volume
its a pretty common practice across many circuits
Dr. Sherman Sticks M.D.

User avatar
IAMILFFAMOUS
IAMILFFAMOUS
 
Posts: 4012
Joined: Tue Aug 28, 2007 8:01 pm
Location: rochester, ny

Re: Best way to install a master volume on a fuzz

Postby BetterOffShred » Mon Aug 27, 2018 11:52 am

Dr. Sherman Sticks M.D. wrote:even the SHO schematics show a voltage divider pot at the output to add a master volume
its a pretty common practice across many circuits

:thumb:
BetterOffShred

User avatar
IAMILFFAMOUS
IAMILFFAMOUS
 
Posts: 3254
Joined: Thu Aug 17, 2017 2:01 pm

Re: Best way to install a master volume on a fuzz

Postby Bret608 » Mon Sep 10, 2018 3:59 pm

The schems I've seen for doing this on a Buzzaround or Dizzytone pretty much go from lug 2 of the Timbre pot (i.e. the existing output) to lug 3 of a 100k volume pot. Then, lug 2 of that volume pot is your new output, and lug 1 goes to ground.

Apologies if someone else already pointed this out! Hopefully this was at least somewhat clear. Also, for what it's worth, my Ghost Buzzaround has just the three knobs, but the balance knob really does just work like a volume control, even if it's technically some sort of bias. I haven't tried a Dizzy yet, though.
Bret608

committed
committed
 
Posts: 112
Joined: Thu Jun 03, 2010 4:07 pm
Location: Madison, Wisconsin

Re: Best way to install a master volume on a fuzz

Postby eatyourguitar » Sun Oct 28, 2018 2:58 am

goroth wrote:If a pot changes the sound or doesn’t work as expected you could put a simple booster afterwards.


or you can try the treble bleed mod for your output volume pot. you can change from the standard 100K to a 25K or 250K. the 250K or 500k will get darker as you turn down the volume. if this is undesirable then you should be using a 25K to keep it bright all the way down. you can also keep going with 100K or 500K but just add a resistor and cap if you want to keep it bright at half volume. no matter what pot you use, it will always be bright at full volume because it only adds a shunt but does not increase output impedance. when I do the treble bleed mod I don't just slap a cap on 2 + 3. I actually add a resistor in series to the cap based on the filter slope I think would work best. think of it like RC high pass in parallel to a voltage divider. the loss of brightness depends on the load connected to the output so your results may vary. just build it to work best with the amp you use the most.

MechaGodzilla wrote:Maybe I could stick an sho on the output, I think I'd be ok with that. I guess it would boost the super-zippy fuzz sounds that are a bit quiet, but it wouldn't help to attenuate the huge tonebender-y sounds (normal sho at zero isn't "off", it's just no boost)


I would advise against an SHO for a recovery stage. the advantage to BS170 is the really high input impedance from the mosfet that works great as the first thing your guitar sees. one of the drawbacks of using a BS170 as a recovery stage after an active stage is that they will always be way too bright. there is this sound that cuts through the mix in a way that I find to be almost unusable for live shows. the sound man will be fighting an uphill battle to get it EQ'd half way decent. you can bias a TL072 to work in class A mode and this works great for a perfectly linear recovery stage with no crossover distortion. it is jfet but it does not EQ your sound at all if the impedance's and AC coupling caps are carefully selected. if you must use a BS170 you should have fixed gain and the right output cap to balance the treble back a bit. the gain is controlled by the volume pot right before the BS170 NOT the 5K SHO crackle knob. replace the 5K knob with a 5K or 2.7K resistor.
WWW.EATYOURGUITAR.COM <---- MY DIY STUFF
eatyourguitar

User avatar
IAMILF
IAMILF
 
Posts: 2861
Joined: Sun Oct 03, 2010 12:37 pm
Location: USA, RI


Return to DIY Effects



Who is online

Users browsing this forum: No registered users and 1 guest


Sponsored Ad. (Please no inflated/repetitive clicking. Thanks!)

Advertisements help support ILF


ilovefuzz.com is not responsible for user-submitted content. Users participate at their own discretion and risk.