I'm Under The Influence . . . Of A Very Techincal Friend

[Grainger49]

So, Lawrence Yeattes has stated that polystyrene caps, specifically Multicap RTX are the best sounding RIAA EQ caps out there.  Or the best he has ever heard.

So I bought some hand matched, dead nuts on, RIAA caps for my Eros.  I'm burning them in on my Eagle 2C in the work room. 

Now, is the 10.5k Ohm resistor the only resistor in the RIAA EQ circuit?  I bought 20 = 0.1% resistors.  We measured them on his 6 digit bench meter and we found 2 that were 10.499k Ohms (AFC).  I'll use those.  Only one was 10.5k. 

[Paul Birkeland]

Now, is the 10.5k Ohm resistor the only resistor in the RIAA EQ circuit?  I bought 20 = 0.1% resistors.  We measured them on his 6 digit bench meter and we found 2 that were 10.499k Ohms (AFC).  I'll use those.  Only one was 10.5k. 

Technically, the 75K resistor could be considered an integral part of the RIAA EQ network.

You will struggle, even with a 6 digit meter, to measure EQ deviation in operation between a 10.499K and 10.5K resistor. 

-PB

[Grainger49]

Nah, Paul, I was just saying that out of 20, 0.1% resistors only one was dead on but two were one Ohm away.  So I'm happy with that. 

He works at a magnetics/cryogenics lab in Oak Ridge.  I'm jealous of the meter.  It puts current through the resistor and measures the voltage across it.  This takes the meter leads, all four of them, out of the equation.

Lawrence is an old Dixie Bottlehead.