desol said:Well, it's quieter in that position.
shot said:I've spent ridiculous amount of hours trying to get this compressor to work as it should. And I finally nailed what was the problem - one shorted trimmer on R44 position!
It has been very frustrating but it was worth every minute IMO.
Just follow the build guide and BOM provided by SR1200 and reference to the schematic file PYE3 14SCHB.PDF and you'll be good. They are both somewhere in this thread.
Luka
I did readjust this one a lot, but after I found out my problem was elsewhere I set it back to around 22R. Since I have dual channel unit, I set those to match channel-to-channel gain exactly.touane said:R23-->recommended 22R. Both in simulation and reality, it all sounds horrible with this value, and I ended up setting it around 68R, which is also the value appearing on the original schematics. Could you mention how you set this one?
I never had problems with oscillator. I built it with 555 and first I checked if it is getting proper supply voltage (in my case few mV higher than -12V). Then I used my cheap chinese Hantek to trim chopper pulses to the specified 250kHz. It was no big deal. Once done, I never had to go back to it.touane said:Oscillator: I imagine you also used the 555. Could you mention which freq. and which duty cycle you ended up with?
Problem with my dual unit was, as I mentioned somewhere before, with shorted R44 trimmer on one channel. It was manifesting as low output gain on that channel. I first went and tested main signal path on both channels. For it to be tested, I had to disconnect entire sidechain. It was messy since I didn't socket my transistors in the first place and solder pads on this pcb are very small with narrow holes. Disconnecting sidechain is done by lifting mid leg of the chopper transistor PN3640 and disconnecting interstage transformer's primary. That way you can test your input-to-output signal integrity.touane said:Would love to hear more (if you recall) how you proceeded to set it up.
Spencerleehorton said:i'd rather build my own pcbs
aladan said:I think the PIE PCBs are probably still being manufactured, since the pre-order only finished recently. That's probably why you haven't received them yet. You may have to wait a few weeks, or even months. I too am waiting for a set of PIE boards. I'm sure they'll turn up eventually. My CLX PCBs took a few months from pre-order to delivery and there was no problem there.
trashcanman said:Does anyone know if the acsound store is still filling orders? I bought a couple of pre-order Pye boards a few weeks ago and now I've realised they've been shutdown for years or something. Has anyone received anything from them recently?
aladan said:The pre-order only finished recently, so they've only just been in stock for a few day/weeks at most. That's might be why you haven't received them yet. AC Sound is single-person operated amateur DIY, where things often take weeks or months, not a high volume commercial multinational company with dozens of employees where you might get overnight delivery and an instant response to your emails...
I too am waiting for some PI boards - I'm sure they'll turn up eventually. I bought two CLX PCBs late last year and they took a few months from pre-order to delivery so they're most likely still open and operating.
Cheers,
A.
Enter your email address to join: