Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
|
In Reply to: thank you! posted by stark on December 3, 2005 at 11:17:18:
I simply figured that they had used the same half arsed method of measuring gain that they were recommending to others and applied it to their own cartridge (the Miyabe), worked out the output they should be getting and applied it to the current output of the Miyabe to derive a probable value for the transfer function.If you use a single step transimpedance amplifier then the transfer function is indeed set by the feedback resistor. This is not usual practice, and is very unlikely for a phono stage. In all cases trying to get very high gain in the first stage is an invitation to parastitic capacitance, so it is usual to make the gain of the first stage sufficient to reduce the noise in the later stages then cascade voltage amplifiers after it. In a phono stage you have to insert the RIAA equalisation components somewhere, so a second stage is needed.
Mark Kelly
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- A little more complex - Mark Kelly 14:54:33 12/03/05 (0)