Impedance confusion

[LightningPhil]

Hi all,

Some time ago I had REW working well for impedance measurements. Now a year or so has passed, I must be doing something wrong as the impedance measurements are way out of whack. The impedance measurements are all well in the 10kohm range and look like a large spike that can't even be displayed properly. This is wrong as I'm measuring a perfectly normal 8 ohm mid-bass speaker.

Naturally I'm following the guidance on this page:
https://www.roomeqwizard.com/help/help_en-GB/html/impedancemeasurement.html

I've tried 2 sound cards on both my PC and laptop and am getting the same results.

I've even made a new set of leads to check they're working fine - and they measure OK with a DMM.

Here's a pic:

Fault 1

• LightningPhil
• Jul 12, 2018

 

[John Mulcahy]

First thing to check is that the correct input channel is selected, try swapping the current input channel selection and see how that looks.