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echo: electronics
to: GREG MAYMAN
from: BEN RITCHEY
date: 2002-12-24 23:02:02
subject: I/F

* An ongoing debate between Greg Mayman and Ben Ritchey rages on ...

 BR>> I have a Stereo Audio feed for 2 Watts {at} 8 Ohms (per channel)
 BR>> that I need to convert to "Line" level (I'm assuming this is

 GM: > use any curve. I'm guessing the 2 watts at 8 ohms is the MAXIMUM
 GM: > rated output of the equipment that you want to feed into the
 GM: > equalizer. This is 4v RMS.

Yes, it's the maximum.

 GM: > "Line" level is probably about 1v RMS. You could probably reduce
 GM: > the output of the source with its own volume control. Then you

That's my thinking. Plus, since the taps are "hot" (72VAC/RMS) I
was thinking
of just feeding a regular 120/12V transformer then use a divider pot on the
output of that. I already have some like new xfmrs, just need to test first.
I'm assuming a light load would also be a minimum requirement (?).

 BR>> Are there any industry standard Audio Amp ICs that deliver
 BR>> approx. 10W/RMS per channel I should use for the last stage? I
 GM: > There are quite a few. TDA1520 is one I know.

I'll check on it, thanks.

--
Keep the faith,

 : Ben        http://bellsouthpwp.net/c/m/cmech617/
 :         ICQ #32457590  AIM/Yahoo:benritchey  Jabber:cMech
 :
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