Recent content by mboxler

I purchased a UCA202 before reading about the issues with it. I've been using my PC's line in/line out and thought I'd give it a try. I'm using it to test my crossover build, and get a puzzling result. I created a calibration file, and the orange plot is the voltage across the amplifier...

The soundcard is the audio jacks on my ASUS motherboard, but I may have found the issue. The level setting on my Line In was set to 50. When I moved it up to 100 my plots improved dramatically. I assume that digital reduction(?) caused the issue?

I have a separate issue. Klipsch used autotransformers in his early crossovers to attenuate the voltages to drivers. When I ran some plots on a crossover, the voltages seemed a little off. I finally simplified my test. I ran a plot of the source voltage, then ran a plot off the -3db tap of...

Thanks. I assumed it was noise and considered increasing the signal, but worried about damaging the soundcard. It's a steep filter and I'll just assume everything from the noise and below is okay.

Hi First post here :) Recently discovered this way to test the voltage across a crossover output. The following plot is one of many that I don't understand. It's a high pass filter that should look like the LTspice plot, but for some reason, the plot gets fuzzy until around 80db. Is there a...