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Turntable clipping
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Hopefully you guys will not mind a turntable newbie question. :)
A few months ago, I added a turntable to my system. I got a Rega P3
with an Elys2 cartridge and am using a Musical Fidelity X-LPSv3 phono
preamp. The dealer handled the cartridge setup for me since I have
never owned a turntable before and don't know a lot about setup yet.
Overall, it sounds pretty good, and I am really enjoying my stereo.
On a couple of records however, in passages of high amplitude, I am
hearing a clipped, grating, lower-volume, static-like noise. At first,
I thought this might be due to record wear or maybe just a poorly
produced record. I more recently decided, however, to check out some of
the modern audiophile-targeted software, so I bought one of the Mobile
Fidelity Patricia Barber box sets (2 LPs, 45 RPM, 180-gram vinyl, etc)
to see what my $30 would get me. They are great records, but I hear
clipping in one section there, too.
For amplification, I have an NAD C320BEE integrated amplifier, but I
don't hear the clipping on CDs, and I don't have the volume turned up
very high, so I don't think the clipping is happening there. Any ideas
what this could be?
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Just to make sure. It's on both channels? Is you phone stage quiet
when the arm is up? I had an old pioneer receiver with a bad transistor
in one side of the phono stage. When it was hot there was a spiratic
cracking noise. But before it got hot the noise was much more random.
(Caps going bad can cause noise problems too)
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You're description of the noise doesn't sound like mistracking which is the
first thing springs to mind. The second is an intermittent electrical
noise...the way to test for this is to leave your amp/phono preamp set to
phono, with the volume at normal levels, but no record playing. Do you hear
the noise ocassionally? If so, you have something (perhaps a capacitor or a
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Could be, but he does say it's superimposed on the higher-amplitude passages
only.
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tube if the MF has one) shorting somewhere in the phono amplification
section. If you don't hear it, then turn on the turntable, but doesn't play
a record. If it appears occassionally under those conditions, you might be
getting an intermittent static pickup in the turntable itself..in this case,
try running a separate ground wire from the turntable to the amplifier, if
you don't already have one. Report back and let us know what you find out.
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