Thank you for the explanation.
I have four measurements of my home theater here.
Measured is the left speaker + the double bass array (2x4) + my infrasub woofer 4x18 "Dayton.
The crossover from the infrasubwoofer to the DBA is 35HZ and the crossover from the DBA to the left main speaker is 100Hz.
what do the four measurements show you and why is the RT60 so bad even though the waterfall is good (<300ms) and RT60 (700ms)?
Thanks. The spectrogram shows the mids lagging the tweeter by 0.7 ms or thereabouts, then a much larger lag of about 9 ms to the bass region. The treble could be delayed to better align with the mid and both could be delayed to better align with the bass, though the audibility of such timing offsets is a topic of debate.
Hello John, where are you from? Texas?
I am from Tyrol :-)
With REW you've done something great, unfortunately I understand only a little. OK. I understand SPL, Waterfall, etc., but there are such great features in REW. is the waterfall under 100 Hz real? Or only calculated?
I'm writing something to my speakers, these are 2 way speakers with a 12 "TT and 1" HT horn.
I'm from the UK, Horst. All waterfall data is calculated from the impulse response, as is the case for most things including the SPL and phase plots. The impulse response reflects the behaviour of the system measured, so it is all as "real" as the measurement.
Sorry for my incomplete question. The last two measurements.
Once just that inverted the back array without delay (DBA 2) and once the back array inverted and a delay of 15.5ms (~ space length) - DBA 1.
Crossover = 100Hz
Which is the better measurement or which setting do you find better?