(90) BA-750 CD's [45x2 line arrays] GTFIH. - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 8 Old 10-23-2014, 03:05 PM - Thread Starter
 
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(90) BA-750 CD's [45x2 line arrays] GTFIH.

Just kidding.

wondering what the volume is on a DNA 360 ? Should I bother to subtract that from the internal volume a box I am modeling? If I did not compartment out the SEOS 15 and DNA360 what volume adjustments should I make to my box? Or don't worry about it ?

Is it better to compartmentalize it so the CD is not sharing volume with the woofer?
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post #2 of 8 Old 10-23-2014, 03:15 PM
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OMG you will get cross-coupled intermodulation jitter if the drivers share air space, plus the waveguide will surely suffer from sympathetic nano-vibra-stortion.

Better play it safe and split off the woofer into its own rectangular compartment, with the happy extra benefit of making the math a lot easier.
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post #3 of 8 Old 10-23-2014, 03:25 PM
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Oops forgot to say... Just kidding. Sorry for the spammy post.
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post #4 of 8 Old 10-23-2014, 03:26 PM - Thread Starter
 
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Quote:
Originally Posted by antisuck View Post
Oops forgot to say... Just kidding. Sorry for the spammy post.
I asked for it.

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post #5 of 8 Old 10-23-2014, 04:51 PM
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Random thoughts or did you finally have a look at the J4?
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post #6 of 8 Old 10-23-2014, 06:22 PM
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What is +- 0.1cuft going to hurt? At most you will see a 0.5dB difference near tuning. I never measure stuff like that, just guess at the volume it takes up. You're really just spitting hairs when you are talking about <5% changes in volume, some could say <10%.

No problems sharing the same air space.

Last edited by mtg90; 10-23-2014 at 06:28 PM.
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post #7 of 8 Old 10-23-2014, 07:47 PM
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I THINK I modeled my seos12/dna360 as .02cuft which was coincidentally what I also added for bracing.

Maybe .03 for seos15/dna360.
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post #8 of 8 Old 10-24-2014, 05:52 AM - Thread Starter
 
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So its not worth it to compartmentalize the tweet separate ? No benefit ?
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