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Andreas
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Ok, here are three plots from a real crossover (LEM XO202) set at 200 Hz. As you can see from the plots, the numbers on the front do not necessarily match what you get, so measuring may be wise before using in production.
LPF and HPF plots look somewhat expected, for me very interesing was the LPF+HPF plot which is nearly flat (about +/-1dB) up to the highest frequencies.

Setup was:
– PC via USB into Channels 31/32 (Qu32) those are send to Mix2 Output
– Mix2 Out to XO input
– XO LPF/HPF into Channels 1&2
– Channels 1&2 send to Mix1
– Mix1 master used to level at 0dB overall and recorded via USB
So this also gives an overall impression of both DAC and ADC quality of the desc, and don’t forget the LEM is some analog gear in the middle.

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