dice45 said:LCR RIAA:
much more expensive taste than the illuminated platter weight .
fellow Munich Triode Mafioso Thomas Mayer (vinylsavor) uses such, i guess he uses the Tango RIAA. I haven't yet fully understood why this works and works so §$%&in' good, but it does. It's magic.
Vinylsavor said:concerns about hum or noise pick up in LCR EQ coils. However I've never seen any issues with this in practice.
LCR RIAA EQ are not 'compound' they consist of two independent networks in series, one for the 318/3180 uS time constant and one for the 75 uS timeconstants. They can be tweaked separately with very little interaction. The only interaction between the two networks is due to the DC resistance of the coils. Theoretically the two timeconstants can be placed between different stages. But then you need two gain stages which are capable of driving 600 Ohms. It's also no problem to introduce the 'secret' 3.18 uS timeconstant into the 75uS par