I am going to get started on the boxes this weekend. The subs have been ordered and should be here in about 2 weeks. They will be powered with 4 Crest Pro Lite 7.5 DSP's. They will be sealed with each sub getting 4.5 cubic feet.
The theater is on the main level of the house so weight is an issue. I have the engineer that spec'ed the floor system coming tomorrow to look at things and hopefully ease my mind about the weight. I figure each sub is going to be roughly 150 pounds so we are talking about 2400 pounds plus the mains.
Have you considered option A but with floor to ceiling cabs with the drivers evenly spaced? That would cover every section of the front wall, sort of like MKs theater.
I could easily do 6 in the back and 6 in the front. Let's call that option E. Anyone think that would be better than 8 in the front / 4 in the back? Sure would ease my mind about weight distribution too.
edit: scratch that. I forgot about the bass trap vents cut into the riser on the back. I really only have about 100" to work with behind the seats on the back row. Looks like 8 in the front and 4 in the back are the best option?
Thats a tough one as I like an even spread across the back for tactile. You could stagger the rear array equidistant. I'd go eight fronts and four rears. Four stacked in front corners would give max gain plus smooth and consistent across the seating. That rooms a Beaut. Should be a ULF and ULFTR Phenom.
I am not going to have space behind the front row. There will be plenty of space behind the second row though. I am using 4 Crowson's in the front 3 chairs and 4 Crowson's in the back 4 chairs. That coupled with the 12 HST's should address the tactical aspect. Plus the room is on the second floor so that should amplify it.
If I did that I would have to move the front row of seats forward. I am about 12.5' from the screen at eye level with the way the riser is built. The screen is 150" wide. I can't move the front row any closer to the screen.
I like four full towers floor to ceiling. Then place the subs 1/4 off the floor and 1/4 below the ceiling. Wait thats only 8.......Hmmmm I guess 16 is the next option but its your money? Maybe dual opposed as an option?
That done with two opposed drivers at each location and have one mounted magnet out for the distortion cancellation when you push the excursion limits.
Isn't is a 12x sealed SI HST18 modified marty thread?
Seriously,
No I always thought the name "marty" was from martycool007 guy that John designed that ported sub for, I was unaware the gifs had anything to do with it.
No I'd go with option C, erm, ahem, I mean options F and/or G which is where you should have started. I can't believe you'd bother showing up around here with any of the other non-F and G options. For shame.
Option H would be sixteen up front, sixteen in the rear and another eight per side on the side wall flanking the first row. Yeah.
Speaking from experience, take into consideration just how much the boxes will weight and if you actually have enough helpers to pick something that heavy up past however many (35-40") high to stack them. Took me several months after I built my twin ported 18" boxes before I got enough people over to pick them up. Took four dudes and my boxes will be about 100lb less than your double boxes.
That said, I like your idea. Cant wait to see how they look when finished.
Look at you guys comin in here and all martying up the place.... And here Auburn is one of the few that never even mentioned this was going to be a tri-marty build.
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