a really really big fuzz

[Ben79]

[crochambeau]

I've a question about pot orientation.



It seems to me this is designed to accept the solder pin type potentiometer, does this load from the side facing in the pic, or the opposite side?

I still plan on wiring via loom, but my first inclination is to treat the square pad as "hot", and I notice it ties to PCB pour (assumed ground plane) on a few of them. What's your design rule here?

[multi_s]

according to the schematic posted i believe the square pad is pin 1 of the pot, the pin the wiper is shorted to when the shaft is rotated fully ccw.

it is a good point about the loading side though, perhaps they should have been mirrored to the bottom of the PCB or maybe you are meant to use pots more like this that would allow components under. I'll let the designer answer though...

http://www.mammothelectronics.com/Alpha ... -100-a.htm

[crochambeau]

according to the schematic posted i believe the square pad is pin 1 of the pot, the pin the wiper is shorted to when the shaft is rotated fully ccw.

Yeah, that would appear to jive. I'll hold off on that until after I get the top shell sorted, and it's being interleaved with some other production so I'll probably stand by a few days anyway..

Thanks for sleuthing on that!

[Chankgeez]

Is it wrong of me to want to post this every time I see this thread title?

[youtube]http://www.youtube.com/watch?v=xJncHEZ3URs[/youtube]

[crochambeau]

I think I'm zeroing in on the finished look of my build, holding off on mocking up the switches to decide if they'd lend themselves to foot switching or strictly panel set.

[Ben79]

Nice

I'm doing the same with the switches….have left space for a momentary for oscillations or whatever this thing yields.

[multi_s]

I think I'm zeroing in on the finished look of my build, holding off on mocking up the switches to decide if they'd lend themselves to foot switching or strictly panel set.

beautiful finish. damn.

[crochambeau]

I think I'm zeroing in on the finished look of my build, holding off on mocking up the switches to decide if they'd lend themselves to foot switching or strictly panel set.

beautiful finish. damn.

Thanks! It improved a little under a coat of clear since that pic. I'm sort of using this project as a concept test bed for aesthetics. It's been really fun so far, and I'm hoping I have the patience to hold off on the big reveal until the electronic side is finally wired up (board is populated, I just haven't done the loom yet). Better hurry though, I've got a scant two weeks left in order to meet the imposed deadline...

[eatyourguitar]

on the top row of pots and switches (COMP,DIRT/MUD,BASS), the pots are rotated 180. after all pots are installed in the enclosure, the populated PCB drops in on the back of the pots. VOL2, CLEAN, HI_Z, TONE pots hang off the edge of the PCB but the other pots hide under it. I was planning on publishing a drill template but it looks like neither of you are using PCB mounted pots.

[eatyourguitar]

The 3.3uf - what should the orientation be?

I just realized I answered this question wrong in the email. I though you were asking about the electrolytics on the PCB they are all marked. I guess you were asking about the non-polar 3.3uf box cap. I have used them before they are way bigger than the outline on the PCB. if you want to use electrolytic, I am lost. you can put two of them back to back in opposite directions to make a non-polar electrolytic cap.

Are those two 1n4001s above the first PNP clipping diodes? If so, I'll socket them (not sure they're gonna fit in the sockets though…).

yes they are the clipping side if the DIRT/MUD switch + pot. do not fit sockets and sockets do not fit them

Looking forward to this ongoing mass project.

me too!

[UglyCasanova]

That looks ridiculous. I love it.

[crochambeau]

I think the Ge transistor sockets are in mirror image of the Ge transistor stock I have, the tab depicted in silkscreen also appears to be electrically tied to the collector (in A/B of schematic), which runs contrary to my interpretation of that feature.

In short, it sounded like shit when I stuffed per silkscreen and improved drastically when I bent legs and turned the PNP 180 degrees. Can you confirm, or is my old stock from an insane asylum?

[multi_s]

traditionally the tab is in line with the emitter so i would guess your stock is sane.

[eatyourguitar]

On V2 pcb the pinout will labeled but for now i think it is fine. Some odd parts will require pin bending. I use an atlas dca55 to tell me the pinout everytime. This way I always get it right. You could probably do a similar test on a breadboard with a meter if you had no internet no datasheet no fancy pinout tester.