Creepy Fingers - Doomidrive

nightendday · Post by **nightendday** » 08 Sep 2012, 19:33

I know that it's a unidrive clone, but I don't know what has been changed, and haven't been able to find the info ANYWHERE.

Nocentelli · Post by **Nocentelli** » 13 Jan 2014, 18:52

http://tagboardeffects.blogspot.co.uk/2 ... e.html?m=1

Looks like the Univox Unidrive with a B100k voltage divider pot at the input for the drive control in place of the original multi-position rotary, leading to a 250k pot with 4n7/10u input cap blend followed by the rest of the unidrive schem. I might draw up a schem from the vero when I've got some time.

IvIark · Post by **IvIark** » 13 Jan 2014, 20:41

Here's the scheme:

Nocentelli · Post by **Nocentelli** » 13 Jan 2014, 21:15

Superb, thanks! Can it go into "Boutique"?

IvIark · Post by **IvIark** » 13 Jan 2014, 21:35

Done. I may as well add this as well

disorder · Post by **disorder** » 14 Jan 2014, 19:28

Does the 'last' transistor gain matter or is that acting as an out buffer?

beedotman · Post by **beedotman** » 14 Jan 2014, 20:00

Nice!

fakcior · Post by **fakcior** » 15 Jan 2014, 09:34

disorder wrote:Does the 'last' transistor gain matter or is that acting as an out buffer?

Yup, it's a buffer.

disorder · Post by **disorder** » 06 Nov 2014, 17:19

Is the orientation of the 10uF cap at the input correct? Negative side to the "bottom" pot/input and positive side to Q1 base?

Nocentelli · Post by **Nocentelli** » 06 Nov 2014, 17:34

Yep, polarised input caps always have negative towards the guitar.

disorder · Post by **disorder** » 06 Nov 2014, 17:50

Guess that makes sense. Guitar would never exhibit a DC voltage large enough to warrant having input cap + side face towards it.

Creepy Fingers - Doomidrive [traced]