LIMP don't want to be my friend !

[arnal21]

Hi,

I recently bought the Arta Suite, then build a measurment box for use with an amp, but there is 2 strange things with LIMP :

1/
After calibration, if I measure a 8,2Ohms Resistor I obtain a flat Impedance curve (under 10KHz) at 8,6Ohms, so ok, I write "0,4 Ohms" in the "cable compensation".
But after that the measure is ... 9 Ohms !!
I tried with bigest values and it is always the same result : " Cable compensation" value is added to the curve instead of been substracted.
?!

2/
I obtained coherent results with all speakers I measured.
All ... but one ;-)
When I measure Visaton FR10-8 (3 differents) I obtain an inverted impedance curve, with the impedance near zero at Fs !?

I don't undestand this strange things, so I don't trust my others previous measurements anymore :-(
.
Maybe a problem with my box ?

Thank for read me
Regards
Arnaud

 

[Osvaldo de Banfield]

Did you try those speakers very far from any wall, say, at open air?

 

[Mario Pankov]

Try to input -0.4R for the cable compensation and it should work. Can you post the other measurement?

 

[gdan]

You can contact the Author of this software Ivo Mateljan at this thread:

ARTA