Impulse response gate (ARTA)

[btntx]

Hello,
I'm pretty new at this so please forgive my ignorance. I'm in the process of measuring driver responses in order to design a passive crossover.

The first measurement that I took was the tweeter (impulse response, sweep, 1 meter). I can't tell from the graph where to set the second gate marker. There is not an obvious reflection in the waveform. My studio is approximately 11' x 12' -- if that is a factor. Does anyone have suggestions on where I should gate this (see attachment)?

 

[Lojzek]

Start a window at 4,17 ms; end at about 8 ms. All after that is reflection.

You always want to see the whole pulse, its start and gradual decay, so to say.
You can see it also in step response of this impulse.

 

[btntx]

Thanks for the information Lojzek. Have a good new year.