I got a fair amount of work done on my next project the last couple days. This one is a high power, three-channel, active ground amplifier and matching power supply. These also come from AMB labs.
More to come… there’s still a lot to do!
Just about done with the amp. I still have to wire in the headphone jacks when I get them, but it works with the speaker jacks already.
Here’s the full amp in all it’s cookie tin goodness:
The front panel:
The back right:
I was getting some transformer hum problems despite my best efforts to keep the signal wires on the opposite end of the enclosure, so I ended up moving the toroid into it’s own enclosure while keeping all the wiring, IEC, and on/off switch in the original tin.
As luck would have it, I had a round cookie tin lying around so I put it to good use! As such, I present to you the cookie tin/beta 22 hybrid:
I just need to trim and mount everything to that board (scrap piece of shelf from IKEA) and then it should be completely finished.