So stoked - I have this and an Aleph J (my first Pass amps) in the active pipeline, and it looks like I may have one singing by the end of the weekend!
Thanks again, Kevin, for all your (and your kids’) efforts!
Thanks again, Kevin, for all your (and your kids’) efforts!
First, thanks again for doing all the legwork. There's about to be a flurry of amp building going on and you're responsible for it. !!!
I've not read the biasing instructions carefully yet ... that'll happen as the amp is built. But that sort of video, if it really doesn't take too much time to make, would likely be useful to a lot of folks going forward. There will likely be hundreds of these built in the next year or so and many will be newbies.
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I am actually glad you brought that up! I have never done it and this Amp will be my second ever build, so I wouldn't mine a video guide on it.
Thanks in advance
Daniel
Got my boards and mosfets yesterday! Very excited to build this well received amplifier.
Kevin, your service to our community is noble. My deepest thanks. - David
Kevin, your service to our community is noble. My deepest thanks. - David
Here is the video showing the bias procedure. Not the best resolution, but should be good enough to help you through the process.
ACA MINI BIAS PRODEDURE VIDEO
ACA MINI BIAS PRODEDURE VIDEO
Great video Kevin, congratulations!
Nervous builders may want to insulate the metal shaft of their screwdriver with blue painter's tape, all but the last 1 cm of the blade, so that any accidental touches between the screwdriver and the circuit, don't create a short. Or use an all-plastic screwdriver. Or perhaps a Bourns H-90 (sales link) purpose-made adjustment tool -- AFTER removing the metal clip that holds it in your shirt pocket.
None of this is strictly necessary, as Kevin's video proves conclusively. But if you want a little bit more peace of mind, why not?
_
Nervous builders may want to insulate the metal shaft of their screwdriver with blue painter's tape, all but the last 1 cm of the blade, so that any accidental touches between the screwdriver and the circuit, don't create a short. Or use an all-plastic screwdriver. Or perhaps a Bourns H-90 (sales link) purpose-made adjustment tool -- AFTER removing the metal clip that holds it in your shirt pocket.
None of this is strictly necessary, as Kevin's video proves conclusively. But if you want a little bit more peace of mind, why not?
_
Attachments
Excellent video, Kevin. That is very helpful to see the process in action.
The third hand was a nice trick at about 10:30. 😊
The third hand was a nice trick at about 10:30. 😊
Great!! I just got my package from you from USPS about 10 minutes.
Thanks Kevin
Daniel
I’m, at the very least, as excited as you guys are…looking forward to build updates and reviews!
However, it’s not a race…take your time and enjoy the process.
However, it’s not a race…take your time and enjoy the process.
About 30 minutes before shooting the video I taught my son how to bias the amp. This gave me a better idea on how I wanted to present in the video. This also gave Perry an understanding of how the process worked, which shows in his camera work.