In article ,
Chris Morriss wrote:
If you're using a cartridge direct into a soundcard, I'm not surprised
you're 'not entirely happy'.


A ceramic cartridge needs a very high impedance load (at least 1Meg) if
it is going into an unequalised input. A simple op-amp unity gain
buffer using a FET input amp (even a TL071 will do) should make things a
lot better.

Yes. I think you'd find difficulty in buying a ready made pre-amp for a
ceramic cartridge these days. Not that I'm sure anyone would want to -
although there was a time when it was thought they might be a way forward.
The BBC once used them on one of their turntables - probably designed in
the '50s. The cart was an ACOS - can't remember the model. Then there was
the Decca Deram.

--
*Why isn't there a special name for the back of your knee?

Dave Plowman London SW
To e-mail, change noise into sound.

In message , "Dave Plowman (News)"
writes
In article ,
Chris Morriss wrote:
If you're using a cartridge direct into a soundcard, I'm not surprised
you're 'not entirely happy'.


A ceramic cartridge needs a very high impedance load (at least 1Meg) if
it is going into an unequalised input. A simple op-amp unity gain
buffer using a FET input amp (even a TL071 will do) should make things a
lot better.

Yes. I think you'd find difficulty in buying a ready made pre-amp for a
ceramic cartridge these days. Not that I'm sure anyone would want to -
although there was a time when it was thought they might be a way forward.
The BBC once used them on one of their turntables - probably designed in
the '50s. The cart was an ACOS - can't remember the model. Then there was
the Decca Deram.

My first cartridge was the Sonotone 9TAHC, which wasn't too bad as these
things go.
--
Chris Morriss

On Sun, 19 Dec 2004 16:14:53 +0000 (GMT), "Dave Plowman (News)"
wrote:

In article ,
Chris Morriss wrote:
If you're using a cartridge direct into a soundcard, I'm not surprised
you're 'not entirely happy'.


A ceramic cartridge needs a very high impedance load (at least 1Meg) if
it is going into an unequalised input. A simple op-amp unity gain
buffer using a FET input amp (even a TL071 will do) should make things a
lot better.

Yes. I think you'd find difficulty in buying a ready made pre-amp for a
ceramic cartridge these days. Not that I'm sure anyone would want to -
although there was a time when it was thought they might be a way forward.
The BBC once used them on one of their turntables - probably designed in
the '50s. The cart was an ACOS - can't remember the model. Then there was
the Decca Deram.

The only ceramic cartridge I can remember with pretensions to
lightness and high compliance was the Sonotone 9TAHC. It actually had
a real cantilever.

d

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