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Discussion Starter #1
First of I just wanted to show off some pictures. These may not be to the specific size requirements, but it's not really what the post is about.

I made a jig for measuring polars and did some graphs with REW of this build. Either 1/3 or 1/6 octave smoothing for a clearer picture. I can't remember what I used now. Notice the difference between L and R. It just shows how much baffle width has to do with dispersion as these OB speakers are an off center mirrored design.
On axis left speaker:

On axis right speaker:

11.25 degrees off axis left speaker:

11.25 degrees off axis right speaker:

22.50 degrees off axis, left speaker:

22.50 degrees off axis, right speaker:

33.75 degrees off axis, left speaker:

33.75 degrees off axis, right channel:

45 degrees off axis, left speaker:

45 degrees off axis, right speaker:


In any case, These are not gated except for the default gating in REW. I really need to make gated measurements. Does anyone know if the gating in REW is real or simulated? Can it be set to a tighter gate to default to?

Thanks a million!

Dan
 

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Does anyone know if the gating in REW is real or simulated?
It's real since the result of a measurement in REW is the impulse response. All other graphs are derived from it. REW has a default gate that's applied to your measurements. Take any measurement you've taken or saved and alter the gate as required.

See this post for a basic explanation.

brucek
 

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Thanks Brucek! I was looking for the specific information you just gave me for like an hour yesterday, but just couldn't find it. I knew someone would be in the know.

I appreciate the help,

Dan
 

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How about some pix of the apparatus?
 
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