So I have two small issues:
Built the Chunk Chunk and it worked right off, great.
Problem 1, it doesn't fit in my 1590BB, or rather, it fits but not with the bottom on. I got the 1590 from Mammoth and with the spacing and input jacks the PCB will short out one or the other if pushed in. So other than the obvious, getting a 1590BBM, honestly only short a few mm here, any creative ideas?
I was thinking of hitting home depot and getting either washers or some other type of spacer to give me the clearance. It won't be the prettiest, but its just for my home board use so it doesn't have to look good.
2nd question is on the gain, full on it is a flamethrower, but I found as I turn the gain pot down it thins out, to an almost AM radio quality, I can reduce the presence and treble and increase the bass, which helps some, but then cranking the gain up it is a wall of bass.
Not really having any problems biasing it but for reference if biased this way:
Q1: 2.2
Q2: 2.5
Q3: 4.5
Q4: 5.3
Q5: 8.8
It is reduced some but a little too wooly when cranked.
If biased this way:
Q1: 4.3
Q2: 4.5
Q3: 4.5
Q4: 5.3
Q5: 8.8
(I know each jfet can vary, but I see a ton of people biasing at greater than 7.0, anything over 6 and I get no output)
The woolyness is decreased but it turns terribly thin as the gain is reduced.
Definitely interested in the ROG Fetzer valve bias method but no IC to build it at the moment.
Does this sound like a bias problem or something else? The youtube demo's I have watched don't seem to have this issue and the gain seems to increase fairly evenly up the dial.
I have tried about 10 different J201's in all the positions as well and they all react the same way.
I will say I believe the pedal to be in perfect working order, no squeals, no oscillation, and pretty much quiet (dead silent in comparison to my BSIAB which is also perplexing as this has 10x the gain).
Thanks.
Built the Chunk Chunk and it worked right off, great.
Problem 1, it doesn't fit in my 1590BB, or rather, it fits but not with the bottom on. I got the 1590 from Mammoth and with the spacing and input jacks the PCB will short out one or the other if pushed in. So other than the obvious, getting a 1590BBM, honestly only short a few mm here, any creative ideas?
I was thinking of hitting home depot and getting either washers or some other type of spacer to give me the clearance. It won't be the prettiest, but its just for my home board use so it doesn't have to look good.
2nd question is on the gain, full on it is a flamethrower, but I found as I turn the gain pot down it thins out, to an almost AM radio quality, I can reduce the presence and treble and increase the bass, which helps some, but then cranking the gain up it is a wall of bass.
Not really having any problems biasing it but for reference if biased this way:
Q1: 2.2
Q2: 2.5
Q3: 4.5
Q4: 5.3
Q5: 8.8
It is reduced some but a little too wooly when cranked.
If biased this way:
Q1: 4.3
Q2: 4.5
Q3: 4.5
Q4: 5.3
Q5: 8.8
(I know each jfet can vary, but I see a ton of people biasing at greater than 7.0, anything over 6 and I get no output)
The woolyness is decreased but it turns terribly thin as the gain is reduced.
Definitely interested in the ROG Fetzer valve bias method but no IC to build it at the moment.
Does this sound like a bias problem or something else? The youtube demo's I have watched don't seem to have this issue and the gain seems to increase fairly evenly up the dial.
I have tried about 10 different J201's in all the positions as well and they all react the same way.
I will say I believe the pedal to be in perfect working order, no squeals, no oscillation, and pretty much quiet (dead silent in comparison to my BSIAB which is also perplexing as this has 10x the gain).
Thanks.