i’m tired. But I haven’t finished this lab report. Probably because I’ve been working on the amps for so long. I finished them though. They’re done. Well… they’re done in that they’re working. They’re not done because I’m never done. That, and I haven’t put them in the box yet. I need to still drill out the holes in the box and put them in that little guy. But it all works, and it’s cool. I’m going to have to have some sort of easy volume control, because now I have to adjust one pot for the woofer and one pot for the treble. that’s annoying. So I just set the volume high and turn down the output from my soundcard. I know, I lose bit depth, but it’s 24-bit output. Much higher than 16-bit. But listening to albums would be death. ’cause I’d have to set the volume for the bass, then go sit down, listen to it, and then adjust the treble until it sounds just right. I’m going to make an active preamp later. Patience, friend, patience.
I had some trouble getting them to sound right. I had some weirdo distortion on some frequencies, and it wasn’t the clipping from the amp stage. It was volume independent. I found out that I had a cold solder on the RCA jack center pins. Sucks to them. So I went around and just re-soldered everything, making sure I didn’t move anything as the solder cooled. Sounds much cleaner now.
You may think that it would be oh so much easier for me to just have bought an amplifier. But that’s no fun at all. And you stink. I like tinkering. It’s my job. I wish someone would pay me to do this. Anybody want to buy a 4-channel amp for $200? That’s not very much of a profit…
As I heard on NPR, I follow “the Profit Margins.” peace be upon them.