Baldwin-Burns - Buzzaround [schematic]
- Alex Frias
- Resistor Ronker
I've tried a negative ground version, as I was so short of PNP Ge trannies. I protoboarded this version and was amazed by the results. It happened late at night so I didn't distinguish very well among tranny combinations. I tested it with AC127, AC187 and 2SD30. Then I tried to do a layout for the PCB,. Well, it was made using Paint, you know it's not that pro stuff but I think it works.
- graemey
- Breadboard Brother
Wow, I just checked this thread after a few days and it's gone a bit mad! What have I started haha! Okay, I am now going to try to take more pics and post them here. I can't see the value of the balance pot (which is basically a vol control) but I will attempt to dismantle the guts of this thing soon, then we will know.
Right... wheres my camera?...
Right... wheres my camera?...
- MoreCowbell
- Transistor Tuner
Information
Just a couple little details to hammer out, but it seems like we're close....
Nice layout Alex...
And Bernardduur...thanks for the quickie review...
You guys care to give a more in depth review ?
Nice layout Alex...
And Bernardduur...thanks for the quickie review...
You guys care to give a more in depth review ?
- MoreCowbell
- Transistor Tuner
Information
great pics...thanks a TON Graemey !
I changed the 47u (DAM) to a 100u (Burns) on the schematic. Clear your cache and it will show up.
Hopefully we can get confirmation on the balance pot value soon.
Where's AG ? He's been "conspicuously absent" during this. It would be nice to have him double check the schematic.
I changed the 47u (DAM) to a 100u (Burns) on the schematic. Clear your cache and it will show up.
Hopefully we can get confirmation on the balance pot value soon.
Where's AG ? He's been "conspicuously absent" during this. It would be nice to have him double check the schematic.
- royaltoots
- Breadboard Brother
great photos - i feel like i could lose myself in that last one!
- remork
- Breadboard Brother
quick sidenote-
thanks for confirming AG's statement about the Elka being near identical to the buzzaround!!
wouldn't have known how to, even based on those DAM pix..
and getting out of hand is lovely.
@Royaltoots: aren't handdrawn schems the coolest? they got personality- personality goes a long way
totally impressed here.. thanks to all
kris
thanks for confirming AG's statement about the Elka being near identical to the buzzaround!!
wouldn't have known how to, even based on those DAM pix..
and getting out of hand is lovely.
@Royaltoots: aren't handdrawn schems the coolest? they got personality- personality goes a long way
totally impressed here.. thanks to all
kris
- Alex Frias
- Resistor Ronker
Well... There was a missing 15K resistor, so I think I have it fixed on the folloing drawings
- royaltoots
- Breadboard Brother
- Alex Frias
- Resistor Ronker
I built the layout above and it seems to work properly. At least, I loved the sound of it.
A sample recorded in a non proper way, but it can show at some extent the power of the beast. The first part of the file shows the fuzz at full through an amp simulation that ZOOM insists to be a model of Clean Fender amp. Hummmm...
The second part uses a Crunched Plexi (as ZOOM try to convince us) just to see how good it can be with so different set ups.
A problem I perceived, at least in my perverted version, is the use of the "Balance" pot. Because it plays an obnoxious function. So, Mr. Graemey can comment a bit about it in the original version. If it is used in a low position, the signal sounds a bit gated, reminds me of misbiasing tranny,. So I needed to set it very high to achieve a normal behaviour. It is not so dynamic as a FuzzFace, but it cleans very well using the guitar volume control. I think I will set that "Balance" pot internally, in a form of trimpot and do some kind of regular volume output control. I don't know if it will have any side effect on the filter response.
A sample recorded in a non proper way, but it can show at some extent the power of the beast. The first part of the file shows the fuzz at full through an amp simulation that ZOOM insists to be a model of Clean Fender amp. Hummmm...
The second part uses a Crunched Plexi (as ZOOM try to convince us) just to see how good it can be with so different set ups.
A problem I perceived, at least in my perverted version, is the use of the "Balance" pot. Because it plays an obnoxious function. So, Mr. Graemey can comment a bit about it in the original version. If it is used in a low position, the signal sounds a bit gated, reminds me of misbiasing tranny,. So I needed to set it very high to achieve a normal behaviour. It is not so dynamic as a FuzzFace, but it cleans very well using the guitar volume control. I think I will set that "Balance" pot internally, in a form of trimpot and do some kind of regular volume output control. I don't know if it will have any side effect on the filter response.
- frank.clarke
- Breadboard Brother
Information
I enjoyed the soundclip, thanks. You could wire the "Balance" knob as SHO-style volume rather than a bias knob.
- Alex Frias
- Resistor Ronker
I'm not sure if I really understood your suggestion...
Because my problem with the balance control was about some low setings having that "gating" side effect. If I need a lower level, it will mess with the "sound operation" of the pedal. But it could be just a problem with my version, or even a building mistake still not found. But I really liked the sound and I think this pedal will stay in my pedalboard for sometine...
The SHO crackles when you are dialing the knob, as long as you stop doing it, the thing goes silently.
Because my problem with the balance control was about some low setings having that "gating" side effect. If I need a lower level, it will mess with the "sound operation" of the pedal. But it could be just a problem with my version, or even a building mistake still not found. But I really liked the sound and I think this pedal will stay in my pedalboard for sometine...
The SHO crackles when you are dialing the knob, as long as you stop doing it, the thing goes silently.
- frank.clarke
- Breadboard Brother
Information
Andrew's schematic will have the Q3 emitter at 0V at one end of the Balance range, so "Gating OK" .
I meant you could replace the 15k resistor with a pot and have the wiper going to the 2 caps. That would be more of a volume control. But variable gating is good too. I'm surprised it has no volume control. But easy to add.
I meant you could replace the 15k resistor with a pot and have the wiper going to the 2 caps. That would be more of a volume control. But variable gating is good too. I'm surprised it has no volume control. But easy to add.
- royaltoots
- Breadboard Brother
I increased the value of the Balance pot to 47K, with fixed resistor of 15K - it works more like a volume control than just a 'gate' control, but a master volume could be useful too (no space in the cast-off 3 knob enclosure I'm using though). My NKT213s are very hissy - will try some alternatives for Q1 tonight.
- Bernardduur
- Transistor Tuner
I used the quote on the other page as my balance knob
*fixed 10K + 22K pot* was close enough to *fixed 27K + 4K7 pot*
and it did pretty well. Little gating and more a "volume" knob....... although I added a 4th knob on it (volume) to control it even more.
*fixed 10K + 22K pot* was close enough to *fixed 27K + 4K7 pot*
and it did pretty well. Little gating and more a "volume" knob....... although I added a 4th knob on it (volume) to control it even more.
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
- Alex Frias
- Resistor Ronker
I think I will use a regular output level control... and keep the rest as it is, I am in honey moon with this pedal. Finally I tested the 2SD30 and 2SD352 and the lower gain 2SD30 seems to be, obviously the quieter one. But, remember, mine is not the original version, as I have very small quantity o Ge PNP's but lots of (several models) Ge NPN's. As the sound is fine for me, I will keep it NPN, and sharing the power suply with the other negative ground pedals at the pedalboard.
- graemey
- Breadboard Brother
The Balance Pot:
Mine shows a reading of 6k when I measured it in the pedal so 4.7k or 5k is about right.
I plugged in and noticed the following...
Sustain at zero = no sound
Sustain up 15% = Balance not 'gated' and Timbre increases in volume as it is turned to treble side
Sustain up full = Balance 'gated' in lower settings and Timbre still increases in volume as it is turned to treble side
So the Balance control is so-called as it is used to 'balance' the vol fluctuations as the Timbre is used to shape tone.
Ok guys, can anyone help a with a simple question?
If I build a Buzzaround clone, should all the pots be log or lin type?
(Im quite new to electronics)
Cheers!
Graemey
Mine shows a reading of 6k when I measured it in the pedal so 4.7k or 5k is about right.
I plugged in and noticed the following...
Sustain at zero = no sound
Sustain up 15% = Balance not 'gated' and Timbre increases in volume as it is turned to treble side
Sustain up full = Balance 'gated' in lower settings and Timbre still increases in volume as it is turned to treble side
So the Balance control is so-called as it is used to 'balance' the vol fluctuations as the Timbre is used to shape tone.
Ok guys, can anyone help a with a simple question?
If I build a Buzzaround clone, should all the pots be log or lin type?
(Im quite new to electronics)
Cheers!
Graemey