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In Reply to: Re: Best inductors for RIAA? posted by chaslieb on October 30, 2001 at 12:19:03:
Hi Charles,as mentioned in my previous post, I put the formulas
for the LCR RIAA into an excel sheet. You enter the
corner frequencies you want, the inductance and resistance
of the coils and the sheet calculates all the resistor
and capacitor values.The inductance values need to be close to the nominal
values, otherwise the sheet will produce rubbish. This
technique to compensate the DCRs of the coil is an approximation.
I haven't tried for real high DCR coils yet.With this sheet you can also calculate the LCR values
for other EQs than RIAA. You can also put in the 'secret'
4th timeconstant 3.18us a la Allen Wright.The sheet generates values for two different kinds
of LCR network. One is the Tango-Version. The
other one has a slightly different resistor arrangement.Email me if you want the sheet and I will send it. I'll
help you to come up with the right values.Although I like the Tango units very much (I use them in
my main phonostage) I think they have been over-mystified.
There is nothing magic in them it's just solid engineering.Ciao ... Thomas
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Follow Ups
- Re: Best inductors for RIAA? - Thomas Mayer 12:38:29 10/30/01 (0)
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