News:

Forum may be experiencing issues.

Main Menu
Menu

Show posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Show posts Menu

Messages - panchokunstmann

#31

I tried with a few 2N5457 and nothing   :-[

#32
someone? please  :)
#33
Hi, how are you?.

I need your help! 8) 8) 8) 8)

I built the Muffintop, the problem I have is that it does not sound.

I used the Audio Prove and I noticed that the sound arrives until G of Q1 ( blue line in the photo) :


*the red dots are points that touch the audio prove and did not sound


I have taken all voltages of the transistors, are:
( power supply voltage: 8.99 )
Q1:
D:8.99
G:0.09
S:0.00

Q2
D:8.99
G:0.09
S:0.00

Q3
D:8.99
G:0.09
S:0.00

I reviewed 3 times all components and everything is in order.
the only thing different that I'm taking are the 2N7000 instead of BS170, obviously 180 ° turn around

please help I do not know where to start and what to do first.

thank you very much

Francisco


more pictures: 



#34
Quote from: midwayfair on December 12, 2013, 05:23:07 AM
-Did you use C7, R10, and R11, and what are their values? C7, when you roll down the volume, forms a low-pass filter that varies with how much you turn down the volume; if it's too large, you will cut lots of highs.

-What are your voltages?

-Does the same thing happen when you change the guitar volume?


Jon ,thanks for helping!.

I started checking the capacitors and I realized that I had C7 with 20% tolerance, change it to 5% tolerance and the problem was solved.

I never thought I would be so a notorious difference of 20% to 5%.

really thank you very much, looks like a small problem but without your help I would have NEVER noticed how affects C7

I'm very grateful from you Jon

Pancho
#35
anyone have any idea? please
#36
I built the Soul-bender, with 2 B324 and 1 2N3906 (only for now).

the problem that I have is that if the volume pot is not full, the pedal sounds like "BOOM"; with a lot of bass sounds and nothing of middle and high sounds

to be understood here goes a video:



as you can see, if the volume is at maximum pedal sounds beautiful, but if the volume pot is not the maximum, the pedal sounds like a mass of bass sounds.

I have put pots as 1M and 10k but the problem is the same. the volume pot has to be at maximum to sound good (like a soul-bender) and not as a mass of bass sounds.

I tested with more transistors and the problem persists, I really don't know what to do

please advise me


thank you very much.


Francisco