MichaelW
Well-known member
Well, I'll be the first to throw this up.
It's not "DONE" as the distortion side isn't working and I haven't had the chance to figure it out.
But since we're looking at the behavior of the phasing I thought I'd focus on that.
I initially biased according to the build doc, -1.35v but I wound up biasing by ear to get the best phasing. I found the exact opposite of the build doc in that small adjustments on the trimmer make a pretty big difference in the phasing. I wound up somewhere around -1.78v.
Having said that, I have some oscillation that modulates with the phaser even when not playing. I can't seem to dial it out with the trimmer.
It "could" be dirty power at my house.
As far as the phasing itself, it sounds good. Using the 4 stage it sounds somewhat like a Boss PH-1r. 6 Stages is pretty cool and may be my favorite setting. 8 stages gets into Mutron-ish land.
Regarding the "thunk", @aion can you be more specific about what the issue is? Or point to a clip on the issues?
I'm not hearing anything like a clunk, or a hiccup at the bottom sweep if I'm understanding correctly.
Couple of tips.....if you haven't built it yet.
For Q12, use the 9th JFET that Kevin sent to you. I tried a TO-92 2SK208 initially and wasn't getting any phasing. I popped the JFET that Kevin sent in and it fired right up.
Secondly, Q11, if you're using the Interactive BOM it calls for a 2N5088. The build doc says to use a 2N3904. Use the 2N3904.
It SHOULDN"T make any difference between these two options but in my build, for some reason it did.
It's not "DONE" as the distortion side isn't working and I haven't had the chance to figure it out.
But since we're looking at the behavior of the phasing I thought I'd focus on that.
I initially biased according to the build doc, -1.35v but I wound up biasing by ear to get the best phasing. I found the exact opposite of the build doc in that small adjustments on the trimmer make a pretty big difference in the phasing. I wound up somewhere around -1.78v.
Having said that, I have some oscillation that modulates with the phaser even when not playing. I can't seem to dial it out with the trimmer.
It "could" be dirty power at my house.
As far as the phasing itself, it sounds good. Using the 4 stage it sounds somewhat like a Boss PH-1r. 6 Stages is pretty cool and may be my favorite setting. 8 stages gets into Mutron-ish land.
Regarding the "thunk", @aion can you be more specific about what the issue is? Or point to a clip on the issues?
I'm not hearing anything like a clunk, or a hiccup at the bottom sweep if I'm understanding correctly.
Couple of tips.....if you haven't built it yet.
For Q12, use the 9th JFET that Kevin sent to you. I tried a TO-92 2SK208 initially and wasn't getting any phasing. I popped the JFET that Kevin sent in and it fired right up.
Secondly, Q11, if you're using the Interactive BOM it calls for a 2N5088. The build doc says to use a 2N3904. Use the 2N3904.
It SHOULDN"T make any difference between these two options but in my build, for some reason it did.
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