In-floor subwoofers - 8x8" drivers each, highest WAF factor - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 13 Old 02-11-19, 06:58 PM Thread Starter
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Re: In-floor subwoofers - 8x8" drivers each, highest WAF factor

The corner of the room is the stiffest area of the floor. Besides that the EQ needed for floor shaker given the floor structure and resonances and the EQ needed for the Subs would be different and impossible to get equal response.
That's why I decided to: 1. Cancel out all subwoofer drivers vibrations by opposing them in pairs; 2. Decouple the subwoofer boxes from the house framing so no direct sound gets transferred to the walls, floor and nearby rooms.
The sound effect is generated by the subwoofers pressure alone. After certain sound level you start feeling it in the floor. Whenever a massive flying object in the movie hits the ground it feels like it landed right in front of you.
Again it's a main floor room with basement floor below and although I doubled up all the floor joists to make it stiffer the floor is still responsive.
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post #12 of 13 Old 02-12-19, 12:52 PM
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Re: In-floor subwoofers - 8x8" drivers each, highest WAF factor

It's obvious you put a lot of time and thought into this system. Hopefully it does everything you expected it would.

-Jim

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post #13 of 13 Old 04-16-19, 11:48 AM
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Re: In-floor subwoofers - 8x8" drivers each, highest WAF factor

Awesome build!

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