wierd AMZ booster problem

[arielfx]

i thought to build this one on a real board after it came out great on breadboard.
i don't know why but when i turn it on there's a volume drop and it seems that the pot. is not doing too much of a difference in controling the output.
i double checked everything and all seems to be ok. anyone got an idea what is wrong over here?

[nooneknows]

are you talking about amz MiniBooster?  what type of Fet are you using? did you modify any value?
I've built 3 of them for me and friends and they all worked from the very beginning, except once when I used BF245B fet (no problem at all with J201 and 2n5457)

[arielfx]

i am building the amz mosfet booster with a bs170. i used the values from GGG because they seem to give the right voltage.

[jimbob]

same exact problm here--did u get it figured out?

[AL]

Are you playing with the value of R2 as suggested? Mine was doing exactly what you are describing until I got the correct voltage at point A by tweaking R2. I used a 100k pot to get in working and then measured the R of the pot. Once I did that it sounded fantastic.

AL