I'd like to verify resistances between various points of the jig to verify if my ARTA impedance jig is wired correctly.
Even better if you are in the Dallas area.
I can generate the correct response curves (shapewise, impedance peak at correct frequency)but the impedance values themselves are off, despite the correct reference resistor and calibration procedure.
Wayne Parham Messages: 18677 Registered: January 2001
Illuminati (33rd Degree)
I have impedance jigs for Speaker Workshop and for LMS. I don't use ARTA but it appears to be an MLS system like Speaker Workshop. The test fixture shown below is similar to what I have; Is this what you're trying to make?
It's been suggested that the floating grounds on the outputs of sonic impact amp that I'm using might be causing the issue. Either that or (I'm guessing) a wiring error. I'm pretty sure it's not the SB Audigy 2 sound card's fault (though I've tried several others).
I've been trying to avoid this, but since the sonic impact was my only small amp, it looks like I'll have to lug out one of the solid state beasts to test out the outputs issue.
Wayne Parham Messages: 18677 Registered: January 2001
Illuminati (33rd Degree)
I would try a different amp. The T amps use a switching technology that may affect test results. If you try a different amp and still get the same results, then check the wiring.
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