The problem of removing the frequency response of the bass driver

[Evgeniy Novosibirsk]

Hello! Please help me solve the problem, the situation is as follows, when you try to measure the LF driver, the load scale in% freezes by 9%, or the scale moves very slowly, as a result, the frequency response of the driver is not recorded correctly, as for the midrange and HF drivers, the frequency response is taken correctly and without problems. What could be wrong?

 

[John Mulcahy]

As the message above the progress bar says, REW is waiting to hear the timing reference signal. The timing signal is a high frequency sweep, so the timing reference output must go to a speaker that has a tweeter.

 

[Evgeniy Novosibirsk]

As the message above the progress bar says, REW is waiting to hear the timing reference signal. The timing signal is a high frequency sweep, so the timing reference output must go to a speaker that has a tweeter.

Perhaps you didn’t understand me or I didn’t express myself clearly, I can’t measure the frequency response of the low-frequency driver, the scale freezes at 9%, and at best the scale moves slowly and the measurement is not correct

 

[sm52]

Evgeniy Novosibirsk
If you measure the low-frequency driver, then in this way, as in the video, you lose the low-frequency part of the frequency response. Secondly, in your measurement window, the beginning of the measurement is indicated from 800 Hz. Is that how it should be? REW does the measurement as it should.

 

[Evgeniy Novosibirsk]

Evgeniy Novosibirsk
If you measure the low-frequency driver, then in this way, as in the video, you lose the low-frequency part of the frequency response. Secondly, in your measurement window, the beginning of the measurement is indicated from 800 Hz. Is that how it should be? REW does the measurement as it should.

Evgeniy Novosibirsk
If you measure the low-frequency driver, then in this way, as in the video, you lose the low-frequency part of the frequency response. Secondly, in your measurement window, the beginning of the measurement is indicated from 800 Hz. Is that how it should be? REW does the measurement as it should.

On this video, the high-frequency driver is measured, the border from 800 hertz is so that the driver does not burn

 

[sm52]

If on the video all is good, why publish it? Then see the answer in John's post. If the bass driver does not reproduce a signal above 5 kHz, then the microphone does not hear it, so REW hangs, waiting for this signal. Use another channel for acoustic binding. Send a reference signal to this channel. That is, on the first channel there will be a measured low-frequency driver, on the second high-frequency driver for acoustic binding.

 

[Evgeniy Novosibirsk]

thanks friend, tomorrow I will use your advice I will write whether to receive it or not