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Measured monopole and dipole room responses
Measured monopole and dipole room responses
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Old 10th October 2012, 05:21 PM   #271
Wavebourn is offline Wavebourn  United States
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Measured monopole and dipole room responses
I like to hear fanfares through my line arrays in walls, woofers in concrete boxes on the floor, and subwoofer in concrete horn under the floor. They sound very real.

I made them, damped major room resonances, and allowed cheap digital Audyssey to do the rest.
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Old 10th October 2012, 06:23 PM   #272
soundaatma is offline soundaatma  United States
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Originally Posted by Wavebourn View Post
I like to hear fanfares through my line arrays in walls, woofers in concrete boxes on the floor, and subwoofer in concrete horn under the floor. They sound very real.

I made them, damped major room resonances, and allowed cheap digital Audyssey to do the rest.

Your system sure sounds impressive ...do you mind posting some pictures to inspire others
How did you solve comb filtering issues with arrays.
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Old 10th October 2012, 06:27 PM   #273
soundaatma is offline soundaatma  United States
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If you are waiting for a conclusion that everyone agrees to, that is never going to happen.

I have reached my conclusion. I posted it awhile back. Not what anyone wanted to hear, but hey, I not here for fanfare.
I knew there would be no conclusion based on subjective criteria, but I was hoping a conclusion based on measured objective graphs. But then there is even disagreement on measuring methods
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Old 10th October 2012, 08:00 PM   #274
Omholt is offline Omholt  Norway
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Measured monopole and dipole room responses
Here's the conclusion. At least in my opinion. Treat modal issues if you want great bass response. Anything else will not get you there.
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Old 10th October 2012, 09:00 PM   #275
soundaatma is offline soundaatma  United States
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Here's the conclusion. At least in my opinion. Treat modal issues if you want great bass response. Anything else will not get you there.
Either you treat or even better you prevent modal issues to the extent possible....by using directional radiation, aka dipole pattern

As always, prevention is better than cure
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Old 10th October 2012, 09:04 PM   #276
Wavebourn is offline Wavebourn  United States
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Measured monopole and dipole room responses
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Originally Posted by soundaatma View Post
How did you solve comb filtering issues with arrays.
Easy: I left theoretical issues to theoreticians.

Real life is very different from simplified models, believe me or not.

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As always, prevention is better than cure
Yeah, like in "Back to the future" movie.
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Old 10th October 2012, 09:19 PM   #277
markus76 is offline markus76  Germany
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Either you treat or even better you prevent modal issues to the extent possible....by using directional radiation, aka dipole pattern

As always, prevention is better than cure
Please, show the data that proves that dipoles generally "prevent modal issues".
There's probably one specific configuration where such a claim is actually true but I've never seen it presented in a conclusive manner. So far I've only seen people posting their beliefs but no conclusive facts.
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Old 10th October 2012, 09:20 PM   #278
Omholt is offline Omholt  Norway
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Measured monopole and dipole room responses
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Originally Posted by soundaatma View Post
Either you treat or even better you prevent modal issues to the extent possible....by using directional radiation, aka dipole pattern

As always, prevention is better than cure
No. You don't avoid or prevent modal problems with dipoles. You have less output at the lowest frequencies.
Show me an untreated small room with dipoles and short decay with no ringing and resonances. They don't exist.

There are very few benefits in a small room with directional bass IMO. In concert arenas however cardioid subs have been used for many years with success.
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Old 10th October 2012, 09:24 PM   #279
markus76 is offline markus76  Germany
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No. You don't avoid or prevent modal problems with dipoles. You have less output at the lowest frequencies.
Agreed.

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Show me an untreated small room with dipoles and short decay with no ringing and resonances. They don't exist.
I'm pretty confident that I will be able to show something pretty close soon
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Old 10th October 2012, 09:29 PM   #280
Omholt is offline Omholt  Norway
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Measured monopole and dipole room responses
markus76:
IB subs? That's something that can defintely work if one has that luxury.
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