Sixteen HST-18's Build - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 609 Old 05-21-2015, 08:55 PM - Thread Starter
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Sixteen HST-18's Build

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.

Here are a couple of pictures of the room.




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post #2 of 609 Old 05-21-2015, 08:59 PM
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Wow SIXTEEN HST-18 Subscribed
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post #3 of 609 Old 05-21-2015, 09:02 PM
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For me option "C"
It's the easiest for room correction

At my place, no matter what I tried it always was better with front AND back sub placement.

Congrats I'll be watching closely!!!
Should be epic!!!!
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post #4 of 609 Old 05-21-2015, 09:08 PM
 
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8 in front max IMO.
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post #5 of 609 Old 05-21-2015, 09:10 PM
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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.

Everything in that house better be bolted down.
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post #6 of 609 Old 05-21-2015, 09:15 PM
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post #7 of 609 Old 05-21-2015, 09:19 PM - Thread Starter
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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?

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post #8 of 609 Old 05-21-2015, 09:46 PM
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Quote:
Originally Posted by auburnu008 View Post
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.
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post #9 of 609 Old 05-21-2015, 09:54 PM
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Quote:
Originally Posted by auburnu008 View Post
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?
What is stopping you from Option F...besides conflicting with the title of this thread...
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post #10 of 609 Old 05-21-2015, 10:01 PM - Thread Starter
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Or I could do option G and do 16 in the front and 16 in the back.....
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post #11 of 609 Old 05-21-2015, 10:07 PM
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Have you consider placing some at nearfield for each row of seats?
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post #12 of 609 Old 05-21-2015, 10:11 PM
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Mark my words, if this keeps escalating at the current rate, there will be a fatality in the near future.
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post #13 of 609 Old 05-21-2015, 10:12 PM - Thread Starter
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Quote:
Originally Posted by WereWolf84 View Post
Have you consider placing some at nearfield for each row of seats?
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.
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post #14 of 609 Old 05-21-2015, 10:13 PM
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1/2 the nearfield are far more important than double the farfield.


I'd take my rear three sealed 18" over my front five sealed 18"


I might even take one nearfield sealed 18" firing directly into the back of my chair over the other 7 up front.


It's that good.


So, in case I wasn't clear --- put some of those nearfield firing into your chair back - as close as possible.
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post #15 of 609 Old 05-21-2015, 10:18 PM - Thread Starter
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Quote:
Originally Posted by Archaea View Post
1/2 the nearfield are far more important than double the farfield.


I'd take my rear three sealed 18" over my front five sealed 18"


I might even take one nearfield sealed 18" firing directly into the back of my chair over the other 7 up front.


It's that good.


So, in case I wasn't clear --- put some of those nearfield firing into your chair back - as close as possible.
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.
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post #16 of 609 Old 05-21-2015, 10:18 PM
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figure out a way.

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post #17 of 609 Old 05-21-2015, 10:19 PM
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Quote:
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Or I could do option G and do 16 in the front and 16 in the back.....
That would Cortizone 10 your bass itch for sure.
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post #18 of 609 Old 05-21-2015, 10:19 PM
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How about one under each seat


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post #19 of 609 Old 05-22-2015, 12:09 AM
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What about making 6 seats of 18inch subwoofer-headphones dropped down from ceiling columns?


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post #20 of 609 Old 05-22-2015, 12:22 AM
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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?
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post #21 of 609 Old 05-22-2015, 08:13 AM
 
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Mark my words, if this keeps escalating at the current rate, there will be a fatality in the near future.
At what frequency does the human head explode?
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post #22 of 609 Old 05-22-2015, 09:05 AM
 
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At what frequency does the human head explode?

First you hear the bass....





Then....




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post #23 of 609 Old 05-22-2015, 09:08 AM
 
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That would Cortizone 10 your bass itch for sure.
lmao
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post #24 of 609 Old 05-22-2015, 09:09 AM
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^Did you just Marty this thread?
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post #25 of 609 Old 05-22-2015, 09:21 AM
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I second near field placement. Spread them out and put some bass where you are sitting. You also might need less subwoofers that way.
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post #26 of 609 Old 05-22-2015, 09:28 AM
 
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^Did you just Marty this thread?
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.
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post #27 of 609 Old 05-22-2015, 09:49 AM
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Option M: full Marty HST's.

Yep.


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.
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post #28 of 609 Old 05-22-2015, 09:55 AM
 
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Option H sounds like a winner. Until you upgrade to option I/J/K/L/M etc...
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post #29 of 609 Old 05-22-2015, 10:12 AM
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Option M: full Marty HST's.

Yep.


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.
You forgot the ceiling and floor. Add another 32 to the mix. Each.
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post #30 of 609 Old 05-22-2015, 11:04 AM
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What if you did 3 on each wall? 3 up front, 3 in back, and 3 down the left and right walls?
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