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PostPosted: Tue May 15, 2012 1:54 pm 
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mafew129 wrote:
Could you use a Sziklai Pair in place of the 1 transistor?

Yep:
viewtopic.php?f=41&t=36437

But it will be ugly to implement on that PCB. Totally doable though. 8)

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PostPosted: Tue May 15, 2012 2:12 pm 
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Not bad at all mmarshman :D

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PostPosted: Tue May 15, 2012 4:09 pm 
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mmarsh wrote:
Attachment:
OnesieToneVol.png


bad Visio of the connections for the 3Z...

Forgive my ignorance - what are the pots for Tone and Vol? And are your pots facing the viewer since the PCB was numbered "1 2 3" and not "3 2 1"?

Also this looks like it could be a handy thing on vero 8)

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PostPosted: Tue May 15, 2012 6:37 pm 
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Yes, pots facing you :) both are 100k but tone is linear (B) and vol is log (A)


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PostPosted: Wed May 16, 2012 1:32 pm 
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This seemed like a good excuse to use DIYLC for the first time ;) Kind of fun!

*UNVERIFIED* as of now, but I'll build it soon. mmarsh maybe you can visually give it the "ok"?

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PostPosted: Wed May 16, 2012 3:32 pm 
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That looks right to me. Build it and let us know!


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PostPosted: Wed May 16, 2012 3:37 pm 
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that is awesome. I will have to try it this weekend... maybe.. Nothing like taking the simplest one knob circuit and adding 3 more knobs... LOL :P


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PostPosted: Wed May 16, 2012 4:40 pm 
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Just to take this a step further, I'm putting the wire from PCB 3 in the center of a SPDT On/On to enable or bypass those extra 2 knobs :D

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PostPosted: Mon Jun 11, 2012 9:04 pm 
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Finally built one of these last night using stock specs aside from a 2n5088 (didn't have any MPSA13s). A bit fizzy with farty decay. Switched to a homemade darlington (2x2n5089) and fiddled with the input/outputs and blammo! Going to pile this baby into a 1509A and rock out!

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PostPosted: Mon Jun 11, 2012 9:08 pm 
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p_wats wrote:
Finally built one of these last night using stock specs aside from a 2n5088 (didn't have any MPSA13s). A bit fizzy with farty decay. Switched to a homemade darlington (2x2n5089) and fiddled with the input/outputs and blammo! Going to pile this baby into a 1509A and rock out!

What exactly did you put for ins/outs?

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PostPosted: Tue Jun 12, 2012 6:04 am 
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p_wats wrote:
Switched to a homemade darlington (2x2n5089)


Built a lot of Bazz Fusses with this tranny config, and it is by far my favorite. I too am interested in your in and out cap values. Let us know. thanks! I have 8 more of these boards to build up. :-)


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PostPosted: Tue Jun 12, 2012 7:57 am 
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Hmm, I'll have to check again...there were so many swaps! Ha.

I think it was something like 4.7 (nf, I think, but I could be wrong) for both. I socketed everything but the diodes, and pulldown/CLR resistors.

That said, I've had a point-to-point version on my board forever that literally uses just the following and sounds great:

4.7uf
0.1uf
100K
2N5088
1N914

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PostPosted: Tue Jul 10, 2012 8:03 am 
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culturejam wrote:
• There are two extra ground pads. I put them there for use with the in/out jack ground lugs (sleeve). You do not have to use them. The only ground pad that needs to be connected is the one marked "GND".


OK. Extreme noob of the day question. Where is the one marked GND supposed to go? :? i tried connecting it to the dc jack, both input and output jacks (one at a time of course) and all i get is a real bad hum/buzz. no guitar tone at all. When i disconnect that wire, I get beautiful fuzz. What the hell am I doing wrong? I have both of the extra ground pads connected to the input and output jacks.

EDIT:
OK, I made it worse :roll: now i loose all power when on wall supply. If I run off of battery, and don't connect GND pad anywhere, it seems to work ok. Think I may make it battery only with the setup I have now. It's not in a box yet. I been testing. Will that make a difference with grounding, etc?

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Last edited by Funhouse42 on Tue Jul 10, 2012 8:29 am, edited 1 time in total.

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PostPosted: Tue Jul 10, 2012 8:20 am 
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The main GND pad is supposed to go to the DC jack. But it's possible you're getting adequate ground from the jack sleeve lugs.

But that doesn't explain why it doesn't work with GND hooked up. Are you certain it was soldered to the correct lug on the DC jack? If you soldered it to the battery tab on the DC jack, that might cause some issues with grounding.

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PostPosted: Wed Jul 11, 2012 6:58 am 
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I did something like this on a build, where whenever I attached the ground the pedal went dead. Have you checked that you've not got any solder overflowing? It may be that you're accidentally grounding out your signal too.

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