[nightanole]

Im venturing into power amps and had an idea for the shop. My original intention was to build a 2-3 watt tube amp for my desk speaker. However i already have a mini3/gamma2 combo box at the shop. I was thinking if i could some how build a power buffer (unity gain) to supply current it would sound nice (even more so if i could have it dc coupled).

12v pp converts to 4.24rms
4ohm speaker
that should make about 4.5 watts

that would require a 30va power supply at 12v.

Does anyone have some pointers on the interwebs on building power buffers?

 

[cobaltmute]

Why do you need a buffer?

YouTube - AMB Mini3 Headphone Amp powering Infinity 6.5" woofer

 

[nightanole]

Ya too bad the carrie has a 1watt power supply. Then again think of the poor thing driving a 4-8ohm sub on a 9v battery...

 

[cobaltmute]

If you check, most Infinity car audio is 2 ohm.

And you can build a Carrie with a 2W DCP chip....

 

[joneeboi]

You can also theoretically parallel multiple 2W chips together and plug in multiple USB ports.

 

[Nemo de Monet]

As far as buffers go, something like this would probably work fairly well. I have a slightly beefier version (BD139/BD140) of the same design attached to what is basically a CMoy, and the whole thing powers some 6ohm, 5W KLH bookshelf speakers just fine. More than enough oompas for my ~12x18 home office, on those occasions when I don't want to listen to my all-tube AM/FM receiver...