AMB Laboratories DIY Audio

[helzerr]

I've noticed, when selecting 1.0 dB step size, RP7 is often 0.00Ω... Wouldn't that make the K7 divider "mute" instead of −128.0dB attenuation?

[amb]

Yes, that's because the resistance needed is a small fraction of 1 ohm and the closest available resistor value is 0 ohms.

It doesn't make much sense to have 8 relays and 1dB steps -- much of the control range would be rather useless.

[helzerr]

Makes sense, that's what I figured. Perhaps the .cgi should produce a warning / error if any of the calculated values are lower than the lowest value (or outside valid / reasonable values) in the selected EIA series, or disallow the 1dB / 8 relay combination.