After cramming my last few builds in 1590A enclosures going back to a 125B build is like throwing a hotdog down a hallway. This is the Aion board (Oceanid) that's their trace of the venerable Pete Cornish OC-1 compressor. "Okeanides" represent divine blessings (nymphs) in Greek mythology that presided over the earth's fresh water. In the same way Cornish represents divine blessings in pedal mythology and presides over people with unlimited spending power.
It's a very compelling compressor. Extremely quiet with a very smooth attack and decay, it has a bit more squish than most opticals at the end of it's range. And of course the Cornish buffer. Switchable but who would dare do such a thing...
(https://www.gordomusic.com/Madbean/OC-101sm.jpg)
(https://www.gordomusic.com/Madbean/OC-102sm.jpg)
(https://www.gordomusic.com/Madbean/OC-103sm.jpg)
Top notch tidy and the llooks to boot! Nailed it!
Damn nice!
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Magnificent! Love the gut shot. The wiring is fantisimo!
~Steve
Nice build. I built one and it is a nice compressor. I let my friend try it and I have one less compressor, now.
I hear that. The stuff I really like I don't let anyone else try anymore cuz I know I'll never get it back. I think I've built a total of 3 Collosalus' (Collosalii?) and I still don't own one :-)
Did you measure the resistance on the trimmer to bias it or just by ear?
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hi i finished this one too
did you use the lm358n?
I did. Don't recall if it was old stock or something that I ordered.
Throwing a hot dog down a hallway, I love that phrase! This looks great and now you've made me want to try it out.
Great work and I gotta ask, is the cornish buffer that great?!? I have read about it, I bought two of Kevins Cornish boards to try it out but is it really that great?
Honestly, this is a nice comp but I ended up putting it in with Buddy's stock of my builds. I just never bonded with it. And for no real reason, it just didn't have "it", whatever that is. The comps I use on my live board are the Bajaman LA2A that I etched from the Etcher's Paradise Holly Roller docs, and the PedalPCB Constrictor (Demeter Compulator). As I shrink my live rig down the Holy Roller will be the go-to.
The HR is a limiter and I think the difference is that because it doesn't get a chance to boost the noise floor it's much quieter. Humbuckers tend to hit it a bit too hard and the limiting becomes less useful but it absolutely adores my tele (with a pretty hot Seymour Duncan bridge) so it seems to be more frequency selective than output.
Comps, for me, are a bit of a frustrating mess because what sounds cool down here in the dungeon can sometimes sound like crap on stage, and vice versa. I think the OC-1 was stuck there.
I really like the cornish stuff, it's all really smooth sounding.
Gordo, did you see Erics instagram of your amp? I know he is loving the champ and I think the bassman is heading home with him too!
I am in the same page as you for compression, I love it but am really picky. The constrictor is really nice, I have high hopes for the engineers thumb compressor. It is on my to do list.
Not on instagram but I did talk to Eric and glad to see it going to a good home. The other amp is actually a low power Tweed Twin. Clean headroom for days but loud.
hi
i have a problem with this pedal
the small pcb is damaged and the pedal is not fuctioning
i want to remove the small pcb and wire the footswitch without it but i dont know how i tried with no succes
anyone can help?
Quote from: andreprs on April 13, 2021, 12:37:45 AM
hi
i have a problem with this pedal
the small pcb is damaged and the pedal is not fuctioning
i want to remove the small pcb and wire the footswitch without it but i dont know how i tried with no succes
anyone can help?
See if this helps
https://www.madbeanpedals.com/tutorials/downloads/StandardWiring_MBP.pdf
I haven't done an Aion pedal like this before so I don't know how the pads are labeled, but this diagram will work. Just ignore the battery stuff.
Really nice. How did you make the sticker/decal/not sure what to call it in the cornish style? I'd like to create one but I have no clue how. Thanks!
Quote from: gordo on January 06, 2020, 05:17:28 PM
After cramming my last few builds in 1590A enclosures going back to a 125B build is like throwing a hotdog down a hallway. This is the Aion board (Oceanid) that's their trace of the venerable Pete Cornish OC-1 compressor. "Okeanides" represent divine blessings (nymphs) in Greek mythology that presided over the earth's fresh water. In the same way Cornish represents divine blessings in pedal mythology and presides over people with unlimited spending power.
It's a very compelling compressor. Extremely quiet with a very smooth attack and decay, it has a bit more squish than most opticals at the end of it's range. And of course the Cornish buffer. Switchable but who would dare do such a thing...
(https://www.gordomusic.com/Madbean/OC-101sm.jpg)
(https://www.gordomusic.com/Madbean/OC-102sm.jpg)
(https://www.gordomusic.com/Madbean/OC-103sm.jpg)
Really nice. How did you make the sticker/decal/not sure what to call it in the cornish style? I'd like to create one but I have no clue how. If you created a file for this could you please share it? Thanks!
Great looking build - super sharp. Nice graphics and that board looks cleaaaaan. I also appreciate your discussion of the impact on tone and +/- of the pedal. I often fall in love with whatever I just built and don't always think clearly about what sounds good or works in my flow. I dig your honest take.
I've just finished building the same PCB today and although its working reasonably well I do notice that it does have noise in the form of crackles. Single coils with maximum volume don't exhibit this issue but humbucker pickups on max volume do have this issue. Reducing the volume to around 8 removes the crackles. Inside trim and playing around with the blend and comp settings don't influence the crackles. The crackling issues is prominent with guitar and bass BTW. Same issue.
1. Could this be impedance related?
2. is this related to the LM358N or P opamp as its known for distortion issues?
3. Original uses BC549c, maybe try that instead of the 2n5088? Although I've never had issues with the 2n5088.
Overall it's an OK working compressor but I've played better ones that have more control over attack and release like the Origin effects Cali76. The inside trimmer is not doing much to the overall behavior and I find the blend to influence the compression in a strange way. The compression feels more like volume reduction with an attack that is too quick IMO and from no compression it kicks in too heavy when turning the comp knob.
Hmmm, wish I could be more help on this one but I don't have the pedal anymore. I'd start by checking and re-checking all your parts values and soldering but crackling I'd think would be a chip or transistor issue.
Does it work with buffered bypass or true bypass? Do you have an audio probe? I've built one. I hard-wired mine to be buffered bypass.
Quote from: gordo on March 06, 2022, 08:41:42 AM
Hmmm, wish I could be more help on this one but I don't have the pedal anymore. I'd start by checking and re-checking all your parts values and soldering but crackling I'd think would be a chip or transistor issue.
I did some more testing and I think it's related to the output of the pickups used.
I performed a test with my tele and on the single coils there were no crackles and using both pickups in series (humbucking) crackling started to occur. Not sure where in the circuit this would occur or if I should try replacing some of the opams?
Quote from: tcpoint on March 06, 2022, 08:58:32 AM
Does it work with buffered bypass or true bypass? Do you have an audio probe? I've built one. I hard-wired mine to be buffered bypass.
I have a switch installed so I can select between both. I prefer to use true bypass because I already have a Klon in my chain that has a buffer. I didn't notice any difference between true or buffered bypass concerning the crackling.
BTW, the crackles with humbuckers and higher output pickups occur even with all pots at minumum level.
So I indeed must try to use an audio probe to see if I can detect where the crackles start to occur.
Here's my build.
Ok, I solved the problem by using an audio probe and checking the signal after the first TL072 opamp. After that the signal started crackling where probing before it was a clean signal.
The TL072 opamps I received were TL072IN and I replaced them with TL072P from my own stock and the crackling is gone. No issues with low to higher output pickups!
Quote from: harmaes on March 06, 2022, 12:13:08 PM
Ok, I solved the problem by using an audio probe and checking the signal after the first TL072 opamp. After that the signal started crackling where probing before it was a clean signal.
The TL072 opamps I received were TL072IN and I replaced them with TL072P from my own stock and the crackling is gone. No issues with low to higher output pickups!
Nice job.
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