Baldwin-Burns - Buzzaround [schematic]
- Whoismarykelly
- Resistor Ronker
I ordered some of that board today to build up a tag version. Need to get some hex screws and nuts too for installation. Not sure if I want to use a pedalenclosures box again but they seem to be perfect for this build.
- noelgrassy
- Resistor Ronker
Information
- Posts: 388
- Joined: 28 Nov 2007, 02:43
- my favorite amplifier: MOTS Magnatone & Trainwreck
- Completed builds: Tonebender Mk II w/ 3 OC75's, Burns BuzzAround w/NKT 275,Rangemaster w/ OC44, Fuzz Face w/ SKS363's, CJOD, Harmonic Percolator w/2N404A & 2N3635(vintage correct box,sliding pots, 1%glass resistors),Stack-O-Dimes & Whipple Wahs,
- Location: Vacuum Tube Valley, Cali
- Has thanked: 11 times
- Been thanked: 3 times
Howdy John,
I'll take a Pedalenclosure's box off your hands.
I'll PM yez too.
NG.
I'll take a Pedalenclosure's box off your hands.
I'll PM yez too.
NG.
Copyright does not protect facts, ideas, systems, or methods of operation, although it may protect the way these things are expressed. US Copyright Office
- noelgrassy
- Resistor Ronker
Information
- Posts: 388
- Joined: 28 Nov 2007, 02:43
- my favorite amplifier: MOTS Magnatone & Trainwreck
- Completed builds: Tonebender Mk II w/ 3 OC75's, Burns BuzzAround w/NKT 275,Rangemaster w/ OC44, Fuzz Face w/ SKS363's, CJOD, Harmonic Percolator w/2N404A & 2N3635(vintage correct box,sliding pots, 1%glass resistors),Stack-O-Dimes & Whipple Wahs,
- Location: Vacuum Tube Valley, Cali
- Has thanked: 11 times
- Been thanked: 3 times
Totally. What is it? A SupaFuzz perhaps?WhiteKeyHole wrote:Yeah, well worth the effort. Thanks!
Here's what I came up with to use the excess board;
Pretty cool.
Copyright does not protect facts, ideas, systems, or methods of operation, although it may protect the way these things are expressed. US Copyright Office
- WhiteKeyHole
- Cap Cooler
Rangemaster into a Big Muff-like gain stage. Interesting sound, a bit polite with a horn quality. I tried it first without the Darlington pair but it didn't sound "right."
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- Posts: 3
- Joined: 19 Nov 2008, 06:01
Hi i have one of these pedals completely original! been stored for over 30years and never been used in that time!
Thinking of selling it, any questions email me
jimbo_304@hotmail.com
thanx
jamie.
Thinking of selling it, any questions email me
jimbo_304@hotmail.com
thanx
jamie.
- DiscoFreq
- Resistor Ronker
Information
There will be a reissue by Burns soon, the prototype (made by Gary Hurst) was at the Musikmesse (in the case of an Elka Dizzy Tone, but they want to use the correct case for the production models):
http://filters.muziq.be/model/burns/buzzaround
http://filters.muziq.be/model/burns/buzzaround
EffectsDatabase: http://www.effectsdatabase.com
22000 pedals, 4000 brands, 350 brand interviews
NAMM 2016: http://fxdb.org/namm
22000 pedals, 4000 brands, 350 brand interviews
NAMM 2016: http://fxdb.org/namm
- SPeter
- Cap Cooler
I don't think there will be big difference1 I am going to use AC128, 188 etc!user123 wrote:hi all
instead of using nkt213
i can find: nkt214, nkt274, nkt275
can anyone tell me, is there really a big difference soundwise between using 214/274/275 instead of 213?
any recommendations is really appreciated
thanks
Cheers!
- royaltoots
- Breadboard Brother
well - there will be a difference, but your other choices will still sound good!
- Solidhex
- Resistor Ronker
Yo
You're gonna want to get the "3 knob Tone Bender" set from Small Bear, not the MkII....
Http://www.smallbearelec.com/Detail.bok?no=11
The 3 knob has the same sort of transistor configuration as the Buzzaround you also get the germanium diode...
--Brad
You're gonna want to get the "3 knob Tone Bender" set from Small Bear, not the MkII....
Http://www.smallbearelec.com/Detail.bok?no=11
The 3 knob has the same sort of transistor configuration as the Buzzaround you also get the germanium diode...
--Brad
I know this is an old topic, but I've worked out a perfboard layout for this, and was wondering if anyone would like to give it a look-over. This is based on MoreCowbell's schematic:
Though I couldn't find the "100% correct schematic" that he mentioned on page 5, I've got this version on my breadboard right now and it sounds tremendous. I've built a few pedals before, but always used another's layout, so this is a first for me. The only change I made was to add a 1M pull-down resistor on the input. I tried to keep it pretty tight, as I want to put this in a 1590B box. Any insights would be appreciated.
Though I couldn't find the "100% correct schematic" that he mentioned on page 5, I've got this version on my breadboard right now and it sounds tremendous. I've built a few pedals before, but always used another's layout, so this is a first for me. The only change I made was to add a 1M pull-down resistor on the input. I tried to keep it pretty tight, as I want to put this in a 1590B box. Any insights would be appreciated.
- devastator
- Cap Cooler
Any Silicon project of that circuit ? I tried to breadboard it this afternoon and nothing good . A bad gated sound only with the drive full, that sounded like a bias issue.
- joegore
- Breadboard Brother
Information
Hey folks -- thanks for the killer thread.
I just built the Fuxxaround, the NPN version created by Alex Frias and posted earlier in this thread. Sounds fantastic. But I'm experiencing some, um, unexpected behavior, which I suspect is due to some typical screw-up on my part.
I used three linear pots per the prevailing advice. The behavior and interaction of the balance and timbre pots are pretty much as described throughout this thread. But all the Sustain pot action occurs in the uppermost fraction of the pot's range.
Here's an audio clip demonstrating what I mean:
http://files.me.com/joegore/vc6s5p.aif
There are about 10 seconds each of four sounds:
1. Pedal bypassed (just for reference)
2. Sustain at 100% (blazing yet dynamic fuzz)
3. Sustain at 90% (a bit quieter and "splattier," still nice)
4. Sustain at 75% (massive amplitude drop, quieter than bypassed, though still an interesting tone)
With even lower sustain settings, the sound drops to an unusable whisper, regardless of the timbre and balance settings.
So:
1. Can any audio mavens ID my problem?
2. Have those who've built the Fuxxaround encountered this?
2. If this behavior IS expected, might there be a pot substitution that would focus on that upper 25% of the sustain range? I tried an A100K, and it was even worse. Might a reverse log help?
Thanks!
Joe
I just built the Fuxxaround, the NPN version created by Alex Frias and posted earlier in this thread. Sounds fantastic. But I'm experiencing some, um, unexpected behavior, which I suspect is due to some typical screw-up on my part.
I used three linear pots per the prevailing advice. The behavior and interaction of the balance and timbre pots are pretty much as described throughout this thread. But all the Sustain pot action occurs in the uppermost fraction of the pot's range.
Here's an audio clip demonstrating what I mean:
http://files.me.com/joegore/vc6s5p.aif
There are about 10 seconds each of four sounds:
1. Pedal bypassed (just for reference)
2. Sustain at 100% (blazing yet dynamic fuzz)
3. Sustain at 90% (a bit quieter and "splattier," still nice)
4. Sustain at 75% (massive amplitude drop, quieter than bypassed, though still an interesting tone)
With even lower sustain settings, the sound drops to an unusable whisper, regardless of the timbre and balance settings.
So:
1. Can any audio mavens ID my problem?
2. Have those who've built the Fuxxaround encountered this?
2. If this behavior IS expected, might there be a pot substitution that would focus on that upper 25% of the sustain range? I tried an A100K, and it was even worse. Might a reverse log help?
Thanks!
Joe
- Alex Frias
- Resistor Ronker
It's suposed to behave equal to the PNP version.
So, did you double checked the pot conoctions? Even using a linear pot I didn't expect such compromise...
So, did you double checked the pot conoctions? Even using a linear pot I didn't expect such compromise...
- joegore
- Breadboard Brother
Information
Yeah, double-checked to the best of my limited capacity.
Sadly, I've never used a real one, so I'm not familiar with how the sustain should behave.
Do the tones sound accurate otherwise, Alex? Thanks.
Sadly, I've never used a real one, so I'm not familiar with how the sustain should behave.
Do the tones sound accurate otherwise, Alex? Thanks.
- Solidhex
- Resistor Ronker
A reverse audio taper pot would do the trick. Mouser now carries 16mm Alpha pots with reverse taper. Like this: http://www.mouser.com/ProductDetail/Alp ... k7Mg%3d%3d
They only come in knurled shaft, pc mount though.
I believe another option is to use a 250kb pot and place a 180K resistor across lugs 3 and 2 of the sustain pot. That should approximate a 100k reverse audio voltage divider.
--Brad
They only come in knurled shaft, pc mount though.
I believe another option is to use a 250kb pot and place a 180K resistor across lugs 3 and 2 of the sustain pot. That should approximate a 100k reverse audio voltage divider.
--Brad
- joegore
- Breadboard Brother
Information
Thanks, Brad! I popped in a C100K for the sustain control and it seems like a BIG improvement. Lots more fun, interactive variations, though I could only play for a few seconds (I'll try again tomorrow).
I tried that 180K-resistor-on-a-250KB-pot trick too. Not precisely the same result (I preferred the C100K), but a big step in the right direction, and one I'd recommend for any builders who don't have a reverse-taper pot around.
That fake-reverse trick is sweet. Never run into it before. Can anybody list the formulas for faking reverse taper for other common pot values?
I tried that 180K-resistor-on-a-250KB-pot trick too. Not precisely the same result (I preferred the C100K), but a big step in the right direction, and one I'd recommend for any builders who don't have a reverse-taper pot around.
That fake-reverse trick is sweet. Never run into it before. Can anybody list the formulas for faking reverse taper for other common pot values?
a forbidden link for sure Analog Alchemy https://www.diystompboxes.com/analogalc ... h/emh.htmljoegore wrote:Thanks, Brad! I popped in a C100K for the sustain control and it seems like a BIG improvement. Lots more fun, interactive variations, though I could only play for a few seconds (I'll try again tomorrow).
I tried that 180K-resistor-on-a-250KB-pot trick too. Not precisely the same result (I preferred the C100K), but a big step in the right direction, and one I'd recommend for any builders who don't have a reverse-taper pot around.
That fake-reverse trick is sweet. Never run into it before. Can anybody list the formulas for faking reverse taper for other common pot values?
- Solidhex
- Resistor Ronker
Ah
I spoke too soon. To replicate a reverse audio voltage divider you need to use a tapering resistor that is 20% of the larger value running in parallel. Read this: http://www.geofex.com/article_folders/p ... tscret.htm and this: https://www.diystompboxes.com/smfforum/ ... ic=70732.0
Someone specifically notes that to make a 100k reverse log pot you need to place a 100k resistor across lugs 3 and 2 of a 500k linear pot. 100k being 20% of 500k and the parallel value of 500k and 100k being 100k. This is specifically related to the reverse audio voltage divider like the sustain knob in a Buzzaround.
So the reason the approximation of the revlog wasn't as good as the actual 100kc pot is probably because of those wrong pot/tapering resistor values.
--Brad
I spoke too soon. To replicate a reverse audio voltage divider you need to use a tapering resistor that is 20% of the larger value running in parallel. Read this: http://www.geofex.com/article_folders/p ... tscret.htm and this: https://www.diystompboxes.com/smfforum/ ... ic=70732.0
Someone specifically notes that to make a 100k reverse log pot you need to place a 100k resistor across lugs 3 and 2 of a 500k linear pot. 100k being 20% of 500k and the parallel value of 500k and 100k being 100k. This is specifically related to the reverse audio voltage divider like the sustain knob in a Buzzaround.
So the reason the approximation of the revlog wasn't as good as the actual 100kc pot is probably because of those wrong pot/tapering resistor values.
--Brad