Fun video of the smallest gainclone doing a large job.

[danielwritesbac]

The video is quicktime, inside a zip file.
It shows what miniature gainclones do at parties.

[danielwritesbac]

I know that the video is small. Its the max attachment size for diyaudio.com. Perhaps I should have filmed one of the main speakers instead of the center channel? It just amused me so much when I walked past the speaker and the port tube was making a goodly breeze.
It was a double-take moment.
Breeze?
That driver rarely moves, and I'd never seen it move like that and still sound good.

There was a nice compliment. A hifi guy walks past, raises his glass and says: "Well, cheers little bud!". . . to the amplifier. But I got: "It took you long enough. Did you fix the big one yet?"

I can't. Here's why:

I wish I could find some more of the really high quality 22uf capacitors for the NFB's.
For the gainclones, that cap is either an Achilles heel or an asset. It answers the question of why I had such good luck with Thompson's and Tripaths, and such troubles with gainclones. Now, the question remains of where to purchase some more "no shout" NFB caps.
Any ideas?

[defect9]

Wow, even though that was a short video, and tiny, it was noticeable. I already have one of those projects listed in my "to do" list (not quite so small, mind you), and am happy to see that I'm not going to be starved for power and punch.

on another note, if you ever need to host larger and longer videos, lemme know. i've got a web server with room to spare.

-Jared

[danielwritesbac]

Thanks for your kindness! Much appreciated.

I did find the LM1875 (common kit is named K50) at $12 for amp, $12 (or free) for transformer and $12 (or $5) for power supply, to be an appropriate return on investment. Its somewhat a struggle to find Ci and C position caps of sufficient quality ($4 each), so I don't mind the extra hour of soldering on Tripath for larger projects.

On the little "miniclone" its possible to throw all of its 4 amps power into dynamics. That's what made it worthwhile for me to find just the right gain setting and some beautiful sounding caps to go with it. The video isn't showing it as loud as it can go, just pretty much what it does in normal operation (depending on music source).

Thanks again!