Smallest T-amp board?

[JKoravos]

I just picked up the Sure 2x2W amp last week for a small portable project. I think it will work out OK, but I'm wondering if there is something even smaller out there if I want to decrease the electronic footprint? Anyone know of anything?

[CokewithLime]

You could go with a couple of these Kemo modules - they may not be smaller but defiantly more rugged for portable applications.

[JKoravos]

Damn, those are awesome. Thanks for the link. Have you ever used them?

[CokewithLime]

Yes, I've used the Kemo modules(not the exact one I indicated). They are made in Germany, very rugged can be used with a reasonable range of voltages and are OK distortion wise as long as you don't push them to hard

[JKoravos]

I'll give it a try, thanks for the recommendation.

Do you need a heatsink on it?

[CokewithLime]

No, not required.

[greywarden]

41Hz.com I think they're based in italy or something though. Uber tiny boards.

[JKoravos]

That looks pretty good if the Kemo doesn't work out. They have a 2x25W board that's only 1"x2". 1/3rd the size of the Sure 2x2W.

Here's another one that came up on a search on diyaudio.com SiliconRay VMA2012 2x3W.

[neildavis]

The Ramsey kit is 2.5" x 2.5", but it has a lot of flexibility and decent power output (20Wx2): http://www.ramseyelectronics.com/cgi...ction&key=UAM4



A more promising circuit is the one in the attachment. The entire board is 2.5" x 3.8", but it uses the very nice Analog Devices power amp to give about 20W/Channel. The power amp is the circuitry in the upper right, which could be made smaller since the new versions of the chip do not require an inductor if the speaker leads are fairly short (less than 20"). The circuitry on the left side is a programmable active crossover with BSC and volume control. This circuitry has a USB interface so you can program the digital potentiometers to set the crossover frequency, the BSC and the volume. It was just a test/evaluation circuit, but it works quite well and the software to control it works also.

[JKoravos]

I think this one is the winner: ebay t-amp. It uses the same chip as the Sure 2x2W, but it's only 17.8mm x 20.3mm. That's pretty much 3/4"x3/4". Now we're talking postage stamp amps.