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<DIV><FONT face=Arial size=2>Yeah I have never liked the action of any keboard
unless it's fully weighted like a piano. I've been wanting to find a broken
piano to use for the keys (and maybe the soundboard for a weird reverb). But the
action is usually what goes on a piano. I suppose a usuable cluster of keys
would remain though. But I have a piano in my house and I wouldn't want the
action even from it. Too heavy...</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=philmacnutt@mac.com href="mailto:philmacnutt@mac.com">phil
macnutt</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=synth-diy@dropmix.xs4all.nl
href="mailto:synth-diy@dropmix.xs4all.nl">synth-diy@dropmix.xs4all.nl</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, February 08, 2006 9:41
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [sdiy] audio op amp
replacement</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hi
guys,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Kinda OT, but I need a little help
here. My friend Adam and I are working with an old analog(ue) mixer in
the studio that has bunches of NE5532 op amps
installed.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Adam caught wind that changing
these out to OP275s would improve the sound quality. I checked the data
sheets and they are pin compatible, but I’m not smart enough to decipher the
other specs to determine if another other changes in the glue components
around the chip would need value changes when swapping these
chips.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">So, is it really worth it to do
the swap, and if so, any component changes
needed?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Also, 2 cents on the 1V controller
thread: <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><up on
soapbox><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">beware that when using cheapo
casio style keyboards, you are getting the worst action on the planet.
Often overlooked, I consider this to be very important for performance.
Now if you just make bleeps and helicopter sounds, or spend most of your time
just looking at waveforms on the scope, then this does not matter, but If you
gig and actually play leads and such, then I feel the extra money has to be
spent for a better set of keys. I wrote Roger asking him about the
action on his sweet looking walnut cab controller, but I never heard
anything. I suspect though that it is very
good.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><down off
soapbox><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Phil<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>