Measurement Jig The Jig Measurements

Resistor Measurements

The following compares some resistor measurements between the Jig and a Digital MultiMeter (DMM) . The DMM is the UNI-T UT70D. The Jig is used with Speaker Workshop (SW).

  DMM   SW + Jig   Difference

The accuracy of SW + Jig is really quite amazing. It should be noted however that it takes a bit of tweaking before getting measurements this good. I found that using the right value for your sound card impedance (entered in SW) is important in getting improved accuracy. Some people just use the default value, which is probably perfectly ok for loudspeaker measurements anyway.

And finally I should note the sound card used, which is the Hercules Game Theatre XP.

The Jig
Copyright © 2006 Vikash Chauhan. All rights reserved.