PDA

View Full Version : Matching a phono preamp to a cartridge...



louped garouv
01-06-2011, 10:58 AM
So, I was reading some HP BArney Oliver stuff recently...

a question I have, is what's the math behind matching a cartridge to a preamp, generally?

is it the formula here in the Barney Oliver pre-amplifier schematic the same that would be generally used in other circuits also?

it's the R1* formula, bottom right...
the resistor is just behind the cart in the diagram on the left...

http://www.hpmemory.org/pict/news/barney_ampl/sch_preamp.jpg

Hoerninger
01-06-2011, 11:50 AM
what's the math behind matching a cartridge to a preamp, generally?

http://www.hagtech.com/loading.html
Shows the math and offers an online calculator.

(I'm running a Shure V15 with about 50pF and 100k Ohm using a buld-in pre)
Some more tweaks are here:
http://www.audioheritage.org/vbulletin/showthread.php?13852-Turntable-RIAA-tweaking&p=141782&viewfull=1#post141782
http://www.vacuumstate.com/fileupload/SP_15_Article.pdf
____________
Peter

louped garouv
01-06-2011, 12:22 PM
http://www.hagtech.com/loading.html
Shows the math and offers an online calculator.

(I'm running a Shure V15 with about 50pF and 100k Ohm using a buld-in pre)
Some more tweaks are here:
http://www.audioheritage.org/vbulletin/showthread.php?13852-Turntable-RIAA-tweaking&p=141782&viewfull=1#post141782
http://www.vacuumstate.com/fileupload/SP_15_Article.pdf
____________
Peter


many thanks!

I'll start the investigation later this evening!