Neo 3 tweeter hieght for OB series

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Rocket_Ronny

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Neo 3 tweeter hieght for OB series
« on: 22 Sep 2006, 04:01 pm »
I see the tweeter hieght for the OB series is 40".

I was wondering Danny what hieght your ears are off the floor in your listening chair, and how far you are sitting from the front plane of the speakers? That is, drawing a line from speaker baffle to speaker baffle, how far are you sitting back from that?

Chairs are higher and lower than others, and people are different as well.

So by knowing your ear/tweet hieght ratio, I can adjust for my situation.

And while we are at it, how about this question?

A strong believer in the degradation of imaging by baffle bounce, i was looking to move the tweeter to the inside edge of the baffle, well for that matter, maybe even the whole mtm arraingment. Would that change the frequency response even though you still have a 8" baffle width, or have any other problems introduced?
 
Thanks.

Rocket_fully adjusted_Ronny
« Last Edit: 22 Sep 2006, 04:30 pm by Rocket_Ronny »

Danny Richie

Re: Neo 3 tweeter hieght for OB series
« Reply #1 on: 23 Sep 2006, 10:17 pm »
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I was wondering Danny what hieght your ears are off the floor in your listening chair, and how far you are sitting from the front plane of the speakers?


In my room I am about 12 feet away from the OB-7's when I listen to them and my ear is about 36 to 38" off the floor.

Check the vertical off axis response of the OB-7.



This measurement shows the off axis response in the vertical plane. Measurements were made at 1 meter on tweeter axis and varying vertical microphone distances of 4" increments. The first was at 40" (Red) then 44" (Orange), 48" (Yellow) and 52" (Green).

As you can see from the measured responses that if you were sitting with your ear at 36" (Orange line) it sounds the same as if you were on the tweeter axis. And that was from 1 meter away. From 12' away it is even better.

Quote
Chairs are higher and lower than others, and people are different as well.


If the vertical off axis was that limited then I would have failed as a designer. It must remain consistent over a wide range or the overall room response would be a mess.

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i was looking to move the tweeter to the inside edge of the baffle, well for that matter, maybe even the whole mtm arraingment.

I'd be inclined to try something like that too if the baffle was very wide, but it is only 8" wide. There is no way of moving the woofers over in either direction or the frame of the woofer would fall off the rounded edge of the front baffle. I wouldn't mess with it on a baffle this narrow.