avalanche 18 sealed box - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 13 Old 07-23-14, 10:11 PM Thread Starter
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avalanche 18 sealed box

Eventually I'll build my 20 cubic foot LLT. But for now, I want to build a sealed box for my avalanche 18. It'll be run with an EP2500 and a feedback destroyer pro. It'll be used for 80% movies, 10% games, and 10% music. How big should I make it? Right now I'm thinking about a 2' cube. That should net around 7 cubic feet after displacement and bracing. I have two velodyne 10's now.
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post #2 of 13 Old 07-23-14, 10:25 PM
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Re: avalanche 18 sealed box

24" cube is about 6.5cuft with only 3/4" walls. I usually double up on walls and then add some bracing which would put me closure at 5cuft net after driver.

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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post #3 of 13 Old 07-24-14, 03:48 AM Thread Starter
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Re: avalanche 18 sealed box

Quote:
chrapladm wrote: View Post
24" cube is about 6.5cuft with only 3/4" walls. I usually double up on walls and then add some bracing which would put me closure at 5cuft net after driver.
I was thinking single wall, double baffle, with bracing. 24" sound nice because it would only take one sheet.
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post #4 of 13 Old 07-24-14, 06:59 PM
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Re: avalanche 18 sealed box

Well brace very well as 15/18's can definitely flex walls.

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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post #5 of 13 Old 07-24-14, 08:34 PM Thread Starter
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Re: avalanche 18 sealed box

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chrapladm wrote: View Post
Well brace very well as 15/18's can definitely flex walls.
15/18's??

edit: You meant 15's and 18's. I'm a little slow today.

Last edited by Hondakilla98; 07-24-14 at 08:40 PM.
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post #6 of 13 Old 07-24-14, 11:45 PM
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Re: avalanche 18 sealed box

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Hondakilla98 wrote: View Post
15/18's??

edit: You meant 15's and 18's. I'm a little slow today.
Ya sorry about that. I know you are using an 18 but I just wanted to say that even a 15 can flex the walls a bit.

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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post #7 of 13 Old 07-25-14, 12:06 AM Thread Starter
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Re: avalanche 18 sealed box

I'm also debating being lazy and buying a mini Marty flat pack. Because if that's enough, I don't have to build the huge LLT I had planned. Where as I don't know if the sealed box will have enough low end.
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post #8 of 13 Old 07-25-14, 12:57 AM
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Re: avalanche 18 sealed box

Is that the 3.5cuft tuned to 17hz?

"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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post #9 of 13 Old 07-25-14, 01:08 AM Thread Starter
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Re: avalanche 18 sealed box

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chrapladm wrote: View Post
Is that the 3.5cuft tuned to 17hz?
10 cu ft @17hz
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post #10 of 13 Old 07-25-14, 01:51 AM
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Re: avalanche 18 sealed box

Ah ok. This one:


"Music is the space between the notes"
[T]o talk well and eloquently is a very great art, but that an equally great one is to know the right moment to stop.
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