Why does Eton just show from 400Hz?

[LING GOWA]

Eton Symphony 8

[Curt C]

In a small non-anechoic room, the MLS signal has to be gated to eliminate the reflections from the adjacent surfaces. 300 Hz is about the lower limit of reasonably accurate response in a normal size room. They could show lower, but the curve would be meaningless, as are most MFG's plots that show data below 300 Hz.

Model the drivers response in the box of your choice and splice that response to this one at 300 Hz. Unless you are measuring outside, or in 2pi in a very large room, this is as accurate as it gets.

C

[LING GOWA]

For an 8'' driver, this seems to have no issues at all. Sure would like to see the back end though.

[TacoD]

For an 8'' driver, this seems to have no issues at all.

??? Why questioning the plot then?

[pedroskova]

I'll question it. An 8" driver that doesn't begin to beam until 6kHz?

[kevinp.]

I'll question it. An 8" driver that doesn't begin to beam until 6kHz?

Looks like it begins at 3k to me, but i bet that only shows up to 30 degrees

[LING GOWA]

??? Why questioning the plot then?

'Seems'

[Amphiprion]

That plot shows 0/15/30 off axis, not 0/30/60.