Dual THTLP mouth placement

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jleonard711
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Dual THTLP mouth placement

#1 Post by jleonard711 » Thu May 18, 2017 2:36 am

I'm getting ready to build a pair of THTLP subs with the Eminence LAB 15 for my home theater, and I'm debating between the traditional end-firing mouth or the newer front-firing mouth. I've attached a shot of my theater room showing how the subs will be placed and how far they will be from the walls (about 12" on each side). Would this setup work okay, or would dual front-facing mouths be better? Or maybe one of each??

Thoughts?
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Grant Bunter
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Re: Dual THTLP mouth placement

#2 Post by Grant Bunter » Thu May 18, 2017 4:22 am

Perhaps you're automatically thinking the best place to put the subs is side by side at the front.
Or perhaps aesthetically, that's the most appealing.

In terms of sound and addressing room nodes/modes, that is rarely the best placement.

In HT, more often than not, best placement is a sub on opposing walls.

If you do that instead, would that change your thinking about mouth position?...
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Bill Fitzmaurice
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Re: Dual THTLP mouth placement

#3 Post by Bill Fitzmaurice » Thu May 18, 2017 6:45 am

Grant Bunter wrote: In HT, more often than not, best placement is a sub on opposing walls.
+1. As for the front firing mouth, that's useful when you have to jam the end of the cab tight against the wall, or for upright placement without aiming the cab upward.

jleonard711
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Re: Dual THTLP mouth placement

#4 Post by jleonard711 » Fri May 19, 2017 11:12 am

When you say "best placement is a sub on opposing walls", do you mean tucked up against the wall with the mouth/driver facing away from it? If that's the case then would be better if, rather than having them touching in the middle with the mouths 12" from each wall, I slide them each to the sides so they butt up against opposite walls with front firing mouths?

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Bill Fitzmaurice
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Re: Dual THTLP mouth placement

#5 Post by Bill Fitzmaurice » Fri May 19, 2017 12:33 pm

jleonard711 wrote:When you say "best placement is a sub on opposing walls",
One in the front of the room, one in the back.

Rich4349
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Re: Dual THTLP mouth placement

#6 Post by Rich4349 » Fri May 19, 2017 1:05 pm

Mouths facing the walls / corners, 12" away.
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!

jleonard711
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Re: Dual THTLP mouth placement

#7 Post by jleonard711 » Fri May 19, 2017 1:55 pm

Bill Fitzmaurice wrote:One in the front of the room, one in the back.
Ah, gotcha. Unfortunately, there's not much room to put one in back because the back wall is entirely taken up by my equipment rack, popcorn machine, and a set of double doors. I suppose I might be able to make it work laying on the ground behind the rear row of seats, that may be a possibility. But the one in back wouldn't be in a corner, it would be more in the middle of the room.

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