If I wanted to build a simple attenuator like Bridged-T or
L-pad (http://amps.zugster.net/articles/attenuation), how should
I round the numbers (R1/R2) when buying the resistors
like:
db Z R1 R2
-9 4 2.20 7.27
2.2 ohm -> 2ohm and 7.27 ohm -> 7 ohm etc?