Home Theater Forum and Systems banner

1 - 10 of 10 Posts

·
Registered
Joined
·
6 Posts
Discussion Starter · #1 · (Edited)


I need to measure the Thiele and Small parameters.
I calibrated my sound card.
I calibrated my measure.
I use 50g playload (mms= 100g)

Uses resitances in my soundcard inputs, an amp and a resistance of 16 ohms Rsense. I tried different resistance value. It's still the same error.

RE My hp fact 5.4ohms

What can be the problem ?
thanks for your answer
 

Attachments

·
Premium Member
Joined
·
6,711 Posts
Try entering a lower value as requested, if the DC R is actually higher it will end up with a corresponding dR value during the fit. If the curve fit is good afterwards there shouldn't be anything to worry about.
 

·
Registered
Joined
·
6 Posts
Discussion Starter · #4 ·
there is too much difference, the parameter is not good. Its seems not to work. How can I improve my measure? RE 5.4ohms . REW want 3.9ohms
 

·
Premium Member
Joined
·
6,711 Posts
I was hoping you might share what the result was, the information provided so far doesn't really give any clues. Best would be to post the measurements themselves (attach the mdat file).
 

·
Premium Member
Joined
·
6,711 Posts
The phase of the measurements looks very strange, that is why the parameter fit is not working. Can you please make a measurement of a resistor in place of the drive unit, with the sweep range set to 0 Hz to 20 kHz, single sweep, and post that mdat?
 
1 - 10 of 10 Posts
Top