I can not understand what is "Insufficient HF data"

[Zurab]

Hi
How to solve this problem?

 

[John Mulcahy]

The end frequency of your measurement is too low, try using 10 kHz.

 

[Zurab]

I use these settings here, and I’m not calculating. Where do I need to change 10kHz

 

[Zurab]

I changed the settings to 10kHz now there is no this message, but the equivalent volume is still not calculated

 

[John Mulcahy]

Is that after pressing Calculate parameters?

Please post an mdat file with the measurements rather than screen shots. I also suggest using single sweeps. 7g looks like a lot of added mass for that driver by the way, the peak frequency only need to shift by 20% or so to get accurate results. High mass can cause odd behaviour.

 

[Zurab]

Here is my data

 

[John Mulcahy]

Thanks. The mass is too high for REW to locate the peak in the added mass trace. Try with a much smaller added mass, in the meantime I'll see if I can make the peak search better able to cope with small peaks.

 

[Zurab]

I tried to measure with different loads 1g and 4g does not work

 

[John Mulcahy]

OK, thanks. I've made some modifications to the code to accommodate the low peak levels, those will be in the next beta in a week or two from now. The results with the 7g test aren't very meaningful, if you attach the 1g and 4g measurements I can run those and post the results.

 

[Zurab]

I made these measurements
measurements with 1g could not do

 

[John Mulcahy]

Thanks. How are you supporting the driver for the measurements?

 

[Zurab]

UR22 MkII USB

 

[John Mulcahy]

I was meaning physically, is the driver hung from a wire, mounted on something...

 

[Zurab]

YD103-12 8Om 10W

 

[John Mulcahy]

Here are the results for 3g, 5g and 7g. The 3g measurement has the best model fit so I would have more faith in those figures.