Is this the attic over the garage? Great use of space! Do you have a "If the Sub's are a-rockin', Don't Open The Friggin' Garage Door" sign mounted at the landing? Hehe.!
lol, Yes it is the bonus room above my garage. I actually had to install a motion sensor outside in the driveway with a chime in the theater because when I'm up there, with no window, no light, just loud sounds it is impossible to know if anyone is outside.
My friends would tell me "we came over last night and no one answered the door? We could hear music but you never let us in....jerk"
I'm curious about the roof lines. I know that in speakers, it can be beneficial to not have parallel sides, but what about the room itself?
Nicely done!
I don't have the equipment or the know how to properly test the room acoustically. But from my untrained ear I can tell you my observations.
1. I've never had "bass trouble". When I was running one sub there where certain spots I guess would be called nulls but nothing serious. Bass wasn't missing it just wasn't quit as punchy in a few small spots. Adding the second sub completely cured that and really added a strength of presence to the LFE channel. As far as bass build up in the corners I've never had that either as far as I can tell. Maybe its the short walls and ceiling slope causing low frequency to move different than 90 degree corners??
2. Without acoustical treatment the room isn't brutal but it has some short comings. I guess the shape of the ceiling acted as a "focusing array" and reflected all sound right back to the center seat. The sound was clear and intelligible just really loud. High frequency never left. Seemed like it just ran in a circle. But with proper acoustic treatment the room sounds amazing. Currently I have:
10 - 2x4 broadband acoustic panels with 2" of 80 weight rigid fiberglass with a 1" cavity behind them.
2 - 2x4 broadband acoustic panels with 2" of 80 weight rigid fiberglass flush mounted
1 - 2x4 broadband acoustic panels with 2" of 80 weight rigid fiberglass suspended 4" off ceiling above seating
8 - 2x2 broadband acoustic panels with 2" of 80 weight rigid fiberglass flush mounted on 45 degree part of ceiling
I did send the take off of my room to Auralex and they did a sort CADD mock up of the room and gave me guidelines on were to put panels and how much surface area needed to be treated. Wasn't the greatest thing in the world but helpful.
Only problem, and it is minor, that I have now is a small amount of flutter echo that comes out the stair well in the back of the room leading upstairs. Not a big deal just needs some panels hung in it. I just haven't felt like building them... lazy haha
3. There are two very different experiences to be had in this shape room and dimensions I call them Sound and Vision. Based on which row you sit you get one or the other. The front row is what I can Vision. It is
visually immersive It is about 9 feet from a 106" screen. Feels like Imax a bit to me. You have to turn your head a touch to look around the screen. Feels like you are in the scene, action in you face so your ears are overridden by your eyeballs.
The second row I call Sound. It is
surround sound immersive. That row is about 15 feet away so your eyeballs aren't blazed open so you can visually relax a bit and that seems to let the ears pay more attention and really catch all the great surround effects. Don't get me wrong surround sound is amzing on both rows but the sense of sight definitely takes president in row one.
Hope that answers some questions. Its not very scientific but from a acoustical laymen its the best I can tell you.
