"Ron" wrote in message
On Sun, 13 Feb 2005 19:50:55 +0100, Sander deWaal
wrote:
said:
We were kicking around the concept that the phono section should be
at the turntable instead of the preamp, indeed, if you have a
stereo amp with volume control you shouldn't need a preamp, but
also because the phono section should be close, very close, to the
cartridge, as with a tube or FET condenser mic.
What are some good solid state phono section designs? Should they
treat the cartridge as a balanced source (four wire) or not and
should plus and minus DC rails be needed or should a monopolar
supply be used? What have you readers out there built and liked?
An old idea of mine: a small SMD RIAA conversion amp built right into
the headshell or the arm.
That could be so lightweight as to almost not disturb the resonance
frequency of the arm/cart combo.
Agreed.
Doubtful. Regardless of how small and light the preamp is, it's
going to dramatically affect arm mass. Think SMA 3012 or
similar, not to mention ReVox arms, that are essentially just a
cartridge shell.
I disagree. A true SOTA implementation of this idea would be on a chip
embedded in the cartridge itself. The chip and its packaging would displace
its approximate weight in existing filler material. If you take most
cartrdiges apart, the body of the cartridge has got a lot of empty space and
filler. The working pieces are kinda odd-shaped so the filler is needed to
provide the regular shaped package we see.
Differential inputs and phantom power supply.
Agreed.
For extra credit - the output would be digital - two wires, one ground and
one phantom supply & data out.