On Mon, 28 Aug 2006 23:51:19 GMT, lordy wrote:

On 2006-08-28, Eiron wrote:
lordy wrote:

You have 6.5Hz, 50Hz and 100Hz components. Check your earthing for a start
and try to keep vibrations away.

Thanks.

. I've re-recorded the clip and I've noticed something more interesting about
that noise. It only kicks in when the groove is found...

http://lordy.org.uk/noise.html


No, the hum at least is there all the way through - it is just audibly
masked during the really noisy bit while finding the groove.
The Maplin preamp is showing signs of distress at the start when it is
trying to come out of the massive overload - it is very slow regaining
its proper internal bias state. If you are archiving a load of discs,
then probably some of them will be in better condition than this one
and would benefit from a better phono pre-amp.

Standing the turntable on something more solid may help you with some
of that extraneous mechanical noise, but I would really not hope for
anything very much better than you have (apart from the hum, that has
to go). Most of that other stuff is simply what vinyl does, I'm
afraid. Do use a steep high pass filter at about 20Hz on your
recording, though - it would be unkind to your speakers otherwise.

d

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Pearce Consulting
http://www.pearce.uk.com