madbeanpedals::forum

Projects => Build Reports => Topic started by: szec on September 01, 2017, 04:14:23 PM

Title: Ge Fuzz Face
Post by: szec on September 01, 2017, 04:14:23 PM
Hello everyone,
My first post here. Really dig this forum so decided to finally register. Without further ado this is a fuzz face I did recently for my friend. Sporting two AC125
(http://i.imgur.com/bnEy0y2.jpg)
(http://i.imgur.com/MD7ylpm.jpg)
Title: Re: Ge Fuzz Face
Post by: zombie_rock123 on September 01, 2017, 04:16:29 PM
Neat as hell, nicely done! Is it sporting a hidden inverter or are the transistors wired differently? Or do I completely not understand PNP even now?
Title: Re: Ge Fuzz Face
Post by: szec on September 01, 2017, 04:34:21 PM
Thank you for your very kind words  ;D

No inverter. Regular positive ground pedal. Maybe the colour of wires fooled you since I used red for negative and black for positive... ::)
Title: Re: Ge Fuzz Face
Post by: Bret608 on September 01, 2017, 05:02:31 PM
Looks awesome! I like how you used those metal standoffs. It's not always easy to make a vero build look tidy and solid. The Tagboard layout I presume? Curious what you used for transistor gains, and what voltage you liked for the Q2 collector. I did a hybrid NPN build on that same basic layout (yet to be boxed, per my usual M.O.). Sounds huge.

I see what you did there on the wiring to allow a PNP setup to be used with a normal pedal power-type supply! The first time I saw that was on a D*A*M build--had me scratching my head for a few minutes for sure.
Title: Re: Ge Fuzz Face
Post by: m-Kresol on September 01, 2017, 05:34:51 PM
Nice build and very tidy too. Welcome onboard!
Title: Re: Ge Fuzz Face
Post by: storyboardist on September 01, 2017, 05:46:12 PM
Very clean!  8) Nice work
Title: Re: Ge Fuzz Face
Post by: Martan on September 01, 2017, 06:10:26 PM
Welcome aboard! Great work. Its amazing to me how good a well tuned Fuzz with good transistors can sound.

Marty
Title: Re: Ge Fuzz Face
Post by: mrclean77 on September 01, 2017, 08:39:14 PM
Clean as a whistle! I like the fresnel and hex heads on the standoffs - echoing the above comment, stellar job making a vero build look neat.
Title: Re: Ge Fuzz Face
Post by: szec on September 01, 2017, 09:29:18 PM
Oh my. Thank you all for a very kind words! This is my fourth build ever so I am quite chuffed you like it.

Quote from: Bret608 on September 01, 2017, 05:02:31 PM
The Tagboard layout I presume?
This is a slightly modified layout from IvIark posted on tagboardeffects. I added 3k9
resistor after 10k trimmer, so trimmer in the middle will give almost stock resistance value on Q2 collector
Quote from: Bret608 on September 01, 2017, 05:02:31 PM
Curious what you used for transistor gains, and what voltage you liked for the Q2 collector.
For Q1 I had gain at around 70 and for Q2 gain was 130 and 177 uA leakage. I liked Q2C at around 6-7V as far as I remember. The pedal is already with my friend and I had a limited time to play with it.
Quote
I see what you did there on the wiring to allow a PNP setup to be used with a normal pedal power-type supply!
Just need an isolated power supply, but now days it is quite common to have one. At least I do :)
Title: Re: Ge Fuzz Face
Post by: oip on September 02, 2017, 02:32:04 AM
super nice!  love the axial caps, transistor colour codes and the standoffs.

i am neck deep in these things right now
Title: Re: Ge Fuzz Face
Post by: gordo on September 03, 2017, 02:15:37 AM
Those hex heads on a bare enclosure and radio knobs makes for a tough as nails industrial look.  I like this a lot. Really nice work and welcome aboard.