szukalski
Well-known member
It's still missing the faceplate, but I thought I'd share something which has been on the burner for months now.
Chris is one of my biggest instigators when it comes to pushing my envelope, and I've really enjoyed making some PCBs for some of the more obscure pedals out there (Boss CS-2, TR-2). This is another in that line of layouts.. when I mentioned I was thinking about the PH-1 he told me to run with it and encouraged yet another foray into insecurity.
I'm not usually a big fan of phasers, I enjoy the sound and all, but they're usually too intense for my playing style (the Redstone being the exception).
The PH-1 piqued my interest though. Aion has a PH-1R but that has the resonance feedback which starts getting too wild.
The enclosure is minimal, as is my style. Black washer, because I love a good trolling. There's a faceplate on the way. Green because phasers are green..
The money shot. I used quad op-amps to let my benefactor work his magic with making it better than the original. I don't know where I had the JRC3403AD from, but they were in the inventory so I used them. I assume they're legit, they work in any case.
Matching the 2SK30A-GR was simple, once I had tested a dozen and found them all in range then I stopped testing. Trim pots are bias and output. There is a volume drop, like the original, and I haven't improved that yet.
Of (possible) interest is the new revision of the IO board. I reduced the footprint so it won't hit the enclosure lid when used with a 1590B. Plus, it looks like a space ship.
Ok, what does it sound like? I have a rough demo, which is the best I can do for now. My main amp is playing up, and the Engl is really only good for heavier stuff. It's phone audio, and a dodgy loop, but you get the point..
Chris is one of my biggest instigators when it comes to pushing my envelope, and I've really enjoyed making some PCBs for some of the more obscure pedals out there (Boss CS-2, TR-2). This is another in that line of layouts.. when I mentioned I was thinking about the PH-1 he told me to run with it and encouraged yet another foray into insecurity.
I'm not usually a big fan of phasers, I enjoy the sound and all, but they're usually too intense for my playing style (the Redstone being the exception).
The PH-1 piqued my interest though. Aion has a PH-1R but that has the resonance feedback which starts getting too wild.
The enclosure is minimal, as is my style. Black washer, because I love a good trolling. There's a faceplate on the way. Green because phasers are green..
The money shot. I used quad op-amps to let my benefactor work his magic with making it better than the original. I don't know where I had the JRC3403AD from, but they were in the inventory so I used them. I assume they're legit, they work in any case.
Matching the 2SK30A-GR was simple, once I had tested a dozen and found them all in range then I stopped testing. Trim pots are bias and output. There is a volume drop, like the original, and I haven't improved that yet.
Of (possible) interest is the new revision of the IO board. I reduced the footprint so it won't hit the enclosure lid when used with a 1590B. Plus, it looks like a space ship.
Ok, what does it sound like? I have a rough demo, which is the best I can do for now. My main amp is playing up, and the Engl is really only good for heavier stuff. It's phone audio, and a dodgy loop, but you get the point..
. Chris shared the schematic with me and I’m thinking if you raise the value of r19, you’ll get more gain out of the final output stage of the opamp. Therefore, fixing the volume drop issue. Since you have a 100k volume trimmer to the output jack, you could probably get away with a resistor value of up to 47k. Should be enough adjustment there to get it sounding at unity.
