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echo: tech
to: Roy J. Tellason
from: Russell Tiedt
date: 2003-03-30 13:07:42
subject: 16 rpm LP

Hello Roy.

25 Mar 03 20:01, you wrote to me:

 RT> Russell Tiedt wrote in a message to Roy J. Tellason:

 RT> (Much snippage...)

 RT>> 11 Mar 03 04:06, you wrote to me:

 RT> Big time lag!

To much to do, not enough time ...

 RT> 

 RT>>> Currently looking for a intergrated amplifier I can put real
 RT>>> close to my computer to make life easier, currently I have to
 RT>>> pull my computer apart,  assemble next to the Hi-Fi in the
 RT>>> lounge, record, then reverse the process,  back to my room where
 RT>>> I work on the files and do the transfer to CD-ROM,  which I do
 RT>>> not appreciate having to do.

 RT>> How long a cable would you need to reach from one room to
 RT>> another?

 RT>> From where my computer now sits, to next to my Hi-Fi, about 20
 RT>> meters.

 RT> Maybe do-able.

What I thought too.

 RT>> For an amp you can do well with not very much hardware,  if you
 RT>> don't want a whole lot of power.  I built a little box some time
 RT>> back after I snagged a pre-done board that had been set up for a
 RT>> "stereo headphone amplifier".  The board was sold by
Radio Shack
 RT>> at one time, I picked mine up at a hamfest for 50 cents or so.
 RT>> Built it,  stuffed a couple of LM386 (?) chips in there,  added
 RT>> some switches to deal with the jumper options the board gave me,
 RT>> and fed it from a little DC power supply.  Nominal output of the
 RT>> supply is supposed to be 9 volts at 1 amp (!) but I suspect it
 RT>> goes a little higher than that.  It gets surprisingly loud,  and
 RT>> fidelity is more than adequate for my needs. I have the papers
 RT>> that came with this board around here someplace, even think I
 RT>> know where they are,  so if you want I could send you some
 RT>> photocopies...

 RT>> I don't need an amp so much, as the RIAA stage which is part of
 RT>> the phono stage in the amp.

 RT> Ah.  There's the thing we were kicking around elsewhere not too long
 RT> ago...

Yep ...

 RT> I thought somebody in the electronics echo had posted schematics?

Yes, but I had a time finding the opamps, might still get them from another 
source that has come to my notice recently.

Russell

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