Low frequency actuator

No? Well that's stupid. All my audio amps are DC coupled, well they are if I want to. Actually they're usually unity gain at DC (think AC coupled feedback resistor). Just the other day I put together a 20V 10A bench supply that doubles as a 200W power amp.

Tim

On a sunny day (Thu, 20 Aug 2009 09:01:01 +0300) it happened Paul Keinanen wrote in :

integration.

very robust.

Well, no, but I have wound many transformers :-). Maybe use some ring-core, 50 turns per volt. If you want to lower the minimum frequency use more turns per volt...... That needs more space for wire, so bigger core. With 50 Hz as minimum, if you are lucky and have one with decent iron, perhaps you could use an old heater (for tubes 2 x 6.3V ) transformer. Usually high frequencies are less in amplitude... should work to the edge of human hearing (4 kHz ?? hehe).

Yea, but I am no audiophool.

When you hear that car drive past you BOOM BOOM BOOM BOOM, I think that is all between 400 and 3000 Hz. The bit of extra distortion will give it that special unique sound. Couple of 3055... to drive that transformer. Are they not 10A peak? Should be enough to create ear damage in any car, if you use a decent speaker. Hey, using the heater transformer backwards you can have a 100 V output system, and speakers on the outside, the inside, under the hood, too :-)

Anybody ever tried one of those heater transformers? hehe

Back on form eh fucktard

Good for you, but I plan on just buying cheap off the shelf amps from the local store eg Sony, Pioneer etc. Then there is the question of driving it. A computer is best because of the versatility of its signal generating capacity in the audio spectrum. I have a signal generator but it is expensive and cannot handle complex waveforms (which I *may* want to use at some point). OTOH, everyone has a computer.

Power levels would be real useful for discussing this. Is high power

"Joseph Krackpot Kook"

Power levels would be real useful for discussing this. Is high power

** Read the dam thread - fool .

From the OP, 5 days ago:

" Good for you, but I plan on just buying cheap off the shelf amps from the local store eg Sony, Pioneer etc. "

..... Phil

Typically 100W RMS

In that case i might try deflecting the reference of a standard SMPS.

--=20 Transmitted with recycled bits. Damnly my frank, I don't give a dear

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