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Title: Chunk Chunk J201 bias voltages?
Post by: zilla on February 11, 2014, 04:44:54 AM

Just looking for a sanity check here.

I tuned my Chunk chunk to what i think sounds good, but the voltages that I am reading on the test points seem a bit out of whack:

Vin 9.02 V

TP1: 1.811 V
TP2: 3.465 V
TP3: 1.816 V
TP4: 3.890 V

*confused*

I know that there is supposed to be a lot of variation between J201s, but none of my bias voltages are over 1/2 of Vin

Title: Re: Chunk Chunk J201 bias voltages?
Post by: gingataff on February 11, 2014, 12:09:56 PM

tayda?

Title: Re: Chunk Chunk J201 bias voltages?
Post by: jimilee on February 11, 2014, 02:41:45 PM

Quote from: gingataff on February 11, 2014, 12:09:56 PM
tayda?

I just had some trannies I couldn't bias below 7v, swapped them, all good now. Tayda...

Title: Re: Chunk Chunk J201 bias voltages?
Post by: zilla on February 11, 2014, 02:50:25 PM

Quote from: gingataff on February 11, 2014, 12:09:56 PM
tayda?

nope. I think these were from Smallbear or mammoth.

Title: Re: Chunk Chunk J201 bias voltages?
Post by: Govmnt_Lacky on February 12, 2014, 06:58:26 PM

Quote from: zilla on February 11, 2014, 04:44:54 AM
I tuned my Chunk chunk to what i think sounds good...

Thats all that matters! ;)

madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: zilla on February 11, 2014, 04:44:54 AM