Big Muff Green Russian with Mids Control - debugging

Started by cub3rius, August 02, 2017, 11:41:21 AM

Previous topic - Next topic

cub3rius

I need your help.

1.Name of the project: Big Muff Green Russian with Mids Control
2.Links to the source: https://effectslayouts.blogspot.com/2015/01/ehx-big-muff-green-russian.html
3.I used C549B transistors, 470pF capacitors instead of 500pF and B250k pot for Mids.
4.Problem: There's just clean sound of the bass guitar and loud high pitch noise. No fuzz at all.
5.So far I:
a. checked connections, resistors' and capacitors' codes
b. measured voltages:
Q1: C-7.49; B-0.62; E-0.047
Q2: C-7.42; B-0.62; E-0.049
Q3: C-7.30; B-0.58; E-0.011
Q4: C-7.68; B-0.96; E-0.386

Any ideas what might be wrong?

Plexi

To you, buffered bypass sucks tone.
To me, it sucks my balls.


Plexi

To you, buffered bypass sucks tone.
To me, it sucks my balls.

Plexi

To you, buffered bypass sucks tone.
To me, it sucks my balls.

cub3rius

Connections are fine, but I will double check the transistors.

cub3rius

You were right about the transistors. They were backwards. I feel stupid. :)
Now there's fuzz and all but I still get some high pitch noise...

EBK

  • SUPPORTER
Technical difficulties.  Please stand by.

Plexi

You're welcome  ;D

Quote from: cub3rius on August 02, 2017, 03:40:39 PM
Connections are fine, but I will double check the transistors.

I mean, not the connections: just the small shortcuts between them.
I'm 99% sure that the noise comes from that.
To you, buffered bypass sucks tone.
To me, it sucks my balls.

cub3rius

Quote from: Plexi on August 02, 2017, 07:32:44 PM
You're welcome  ;D

Quote from: cub3rius on August 02, 2017, 03:40:39 PM
Connections are fine, but I will double check the transistors.

I mean, not the connections: just the small shortcuts between them.
I'm 99% sure that the noise comes from that.

I've cleaned that and the noise is gone. :icon_eek:
You guys are golden.
Case closed.

Plexi

To you, buffered bypass sucks tone.
To me, it sucks my balls.

bluebunny

Quote from: cub3rius on August 02, 2017, 05:05:15 PM
You were right about the transistors. They were backwards. I feel stupid. :)

No.  You feel educated!   :)     (And sorry, Pink Floyd, but you guys were sooo wrong...)
  • SUPPORTER
Ohm's Law - much like Coles Law, but with less cabbage...

Plexi

Why you involve Pink Floyd on this?
Don't mess with PF...   >:(






;D
To you, buffered bypass sucks tone.
To me, it sucks my balls.