Aldrin Fuzz pcb discrepancies?

[bluedmc777]

So I building a Hybrid Fuzz Driver using the components changes by Chuck listed below but once I got to the caps I realized that my board is different than the one listed in the BOM. I was entering the substituted values on a print out of the board once I noticed it. Notice the 2 caps circled at the bottom….

Could anyone shed some light on these pcb differences? And for those of you that have used this board to build the HFD did you come across this? This just got really confusing! Ignore the highlights on the boms

Any help would be highly appreciated. I tried looking at the schematic but I can’t tell.

 

[spi]

the 5.6n is C6 and the 2n2 is C14.
They just got moved in your PCBs layout, whereas they were crammed tightly in printed layout.

 

[bluedmc777]

I forgot to post this from the BOM. I thought the cap on bottom left was C6 also but C6 is the second cap in the row on the bottom right after C4.

 

[spi]

In the build doc photo, there are 8 capacitors in a row.
In the picture of your board there are 6 capacitors in a row, and 2 at the bottom corners. So 2 of the 8 capacitors were relocated from the row to the bottom. These two are C6 (5n6) and C14 (2n2).
Remaining 6 in a row should be C4, C3, C10, C8, C9, C12, in that order.

 

[bluedmc777]

@spi Thank you my friend

 

[bluedmc777]

@Chuck D. Bones or anyon, Is C2 supposed to be electrolytic or CAN it be electrolytic? I noticed on someone else’s build that they uses a 2.2uf metal film instead of electrolytic. I only have 2.2uf electrolytics. The values 2.2uf for the hybrid fuzz driver.

 

[bluedmc777]

I’m just gonna go with electrolytic since it’s such a large cap and is all I have anyways. Hopefully this thread will help someone that tries this build in the future.

 

[anevilspar7an]

C2 isn't in the direct audio path so an electrolytic should be fine, if you don't think it is right you can change it out for a tantalum. Hell it looks like you have enough room on the board to fit a current production film capacitor there if it floats your boat.

 

[bluedmc777]

All I had was 2.2uf electrolytic lol. Thanks for the help.

 

[bluedmc777]

Here’s the board minus the 2.2uf that goes to the left of the resistors prior to installing the pots. Yes I used the wrong sized sockets but I was able to bend the legs inwards to fit. Initially meant to just put one for the germanium in Q3 but I wrongfully assumed the third transistor was Q3 so a BC109 gets a socket too.

 

[anevilspar7an]

Left most transistor is begging for a socket now. What made you decide on silver mica caps for that section?

 

[bluedmc777]

I had exactly 2 of them from a Keeley BD-2 mod a while back that I never did. Think that’s where there from. Not sure if they’ll help any but figured if there’s a pedal I’d wanna attempt to reduce noice on it’d be a fuzz!

 

[anevilspar7an]

Don't forget to mark this solved man.

 

[bluedmc777]

I figured I would once I verified it was working.