SpectraPLUS users - I have a quick question

[¿GotJazz?]

I have tried 6 different audio cards/processors on my two home PCs with SpectraPLUS. So far, each of them have given me different results, and none of them work perfectly. I do get a flat 0 dB response when connecting input to output with all the boards. However, when I connect up my crossover, I see low frequency noise harmonics, or non-linearity on the high end, or high frequency ringing.

To say that this has been a huge headache would be an understatement. I've made quite a few trips to Fry's lately!

My question is this: If you got SpectraPLUS to work well for you, What make/model PC are you using and what sound processor?

TIA!

[¿GotJazz?]

Anybody?

I haven't found anything that works accurately yet on any of my PCs (a self-built tower, a Small Form-Factor "cube", and a laptop PC).

I'm eager to find a magic combination that works well with SpectraPLUS.