So, I followed a guide on YouTube as to how to build a measurement cable for getting TS parameters and impedance curves from drivers similar to how the datsV3 works. It’s basically a few 3.5mm jacks, 100ohm resistor, and some alligator clips to attach to the driver. I then bought a USB sound card to plug into my laptop.
The problems arise when I try to run the calibration on the cable in REW. The open loop part works just fine. When I try doing the shorted calibration sweep though, it comes up with an error saying that the input level is too high in comparison to the reference output.
When I test continuity and resistance everywhere on the 3.5mm jacks, it all checks out. No shorts, nothing is mismatched, and nothing is “open” where it shouldn’t be. I’m wondering if the guide that I followed is simply out of date because of an update in REW(he’s obviously using an older version in the video), or if I’m missing something. I did figure out that I have to use a stereo jack instead of a mono jack for the mic because this sound card only accepts a stereo jack on the mic input. So I just soldered the two positives on the jack to the one positive wire going to it.
The problems arise when I try to run the calibration on the cable in REW. The open loop part works just fine. When I try doing the shorted calibration sweep though, it comes up with an error saying that the input level is too high in comparison to the reference output.
When I test continuity and resistance everywhere on the 3.5mm jacks, it all checks out. No shorts, nothing is mismatched, and nothing is “open” where it shouldn’t be. I’m wondering if the guide that I followed is simply out of date because of an update in REW(he’s obviously using an older version in the video), or if I’m missing something. I did figure out that I have to use a stereo jack instead of a mono jack for the mic because this sound card only accepts a stereo jack on the mic input. So I just soldered the two positives on the jack to the one positive wire going to it.
