Twin Titanic sealed sonosubs - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 31 Old 04-02-07, 11:59 PM
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Re: Twin Titanic sealed sonosubs

Lookin good!

If you don't have a BFD for your sub, get one fast!
If you don't have REW, get it now!
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post #12 of 31 Old 04-03-07, 09:43 AM
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Re: Twin Titanic sealed sonosubs

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BoomieMCT wrote: View Post
Here are my "keg subs" as they currently exist.
http://www.hometheatershack.com/foru...ubs-twosub.jpg


Sub Puppies!! They look like little dogs. Woofers!

Jim
Houston, TX

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post #13 of 31 Old 04-10-07, 05:14 PM Thread Starter
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Re: Twin Titanic sealed sonosubs

Well it turns out my one woofer was defective so PE honored the warranty and shipped me a new one post-haste . I just installed it and it seems to be playing great. Once I get both of these broken in and EQ'd I'll post their FR curves and comment on any tips I learn for setting up two non-colocated subs in a room.

Once they are broken in I'll put their grills on too and take pictures. Maybe I'll add some floppy ears too .
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post #14 of 31 Old 04-27-07, 04:48 PM Thread Starter
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Sub Puppies

Okay, these puppies have had a chance to break in and I've done a little (emphasize *little*) bit of work playing with location and EQ. As you can see from the attached graph, these are pretty flat to 20 Hz. This is with minimal placement experiments and only three filters on the BFD (subtration only). Also, the graphs look about the same from all of my seating positions. I think I may be sold on multiple subs! I still need to figure out if that dip at 72Hz is from the interaction of the subs or whether it is some room related artifact from the new locations.

But numbers don't tell the whole story!

It really isn't fair to compare two sealed 12" subs with 500 watts each to my old system, a single Velodyne CHT-10 pushing 150 watts. That being said, my bass is now tighter, more even and goes much lower. The "fear effect" I had heard about but never experienced with my trusty Velodyne appears in full force with these subs. Explosions now feel like they are smashing me in the chest. Kick drums feel like, well, I'm being kicked. I have not yet listened to my blues and jazz but I'm confident these will articulate an upright bass with little difficulty.

On the second attachment you can see the finished product with the childproof kick guards.
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post #15 of 31 Old 04-27-07, 09:29 PM
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Re: Twin Titanic sealed sonosubs

This is slightly off topic.

I had been thinking that a flat sided end panels on a sideways sonotube sub would be great. The only difference is I want to use external ports. Since circles are one of the least space efficient designs, I thought I would put two 2"-3" ports coming out the side near the back with an 90 degree elbow running under the sub, and coming through the front baffle/endcap. Here is a crude drawing of my thought.

Paul
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post #16 of 31 Old 04-27-07, 10:13 PM Thread Starter
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Re: Twin Titanic sealed sonosubs

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This is slightly off topic.

I had been thinking that a flat sided end panels on a sideways sonotube sub would be great. The only difference is I want to use external ports. Since circles are one of the least space efficient designs, I thought I would put two 2"-3" ports coming out the side near the back with an 90 degree elbow running under the sub, and coming through the front baffle/endcap. Here is a crude drawing of my thought.

Paul
Sounds cool. The only concern I'd have is cutting into the side of the sonotube in such a way that the port would have a snug fit. I imagine anything could be patched with enough silicone - but the more snug the fit the less the sonotube itself would be compromised.

A while back I saw a webpage from an Australian guy who did a lot of external ports. He made them look very cool.
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post #17 of 31 Old 04-28-07, 01:18 PM
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Re: Twin Titanic sealed sonosubs

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A while back I saw a webpage from an Australian guy who did a lot of external ports. He made them look very cool.
I have seen those as well, and they are probably part of the reason I thought of it, the subconcious and all.

Paul
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post #18 of 31 Old 04-28-07, 01:34 PM
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Re: Twin Titanic sealed sonosubs

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childproof kick guards
Could you not just turn the sub around and face the driver toward the wall?

brucek
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post #19 of 31 Old 04-28-07, 04:53 PM Thread Starter
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Re: Twin Titanic sealed sonosubs

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Could you not just turn the sub around and face the driver toward the wall?

brucek
Yeah, but then they would kick at the amp's fins and the cables and such. Plus, they might touch a knob and change my settings!
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post #20 of 31 Old 05-04-07, 04:03 PM Thread Starter
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Re: Twin Titanic sealed sonosubs

Here are some more plots that verify why I wanted two subs instead of one.

Blue: Both Subs
Pink: Right Sub
Yellow: Left Sub

I did measurements from all the seating positions (second chart) in my theater room and they were all smoother with two subs. Note the yellow line - that is from laying on the floor. I also tried putting them out of phase and basically eveything below 50 Hz went into the ground.


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Last edited by BoomieMCT; 05-04-07 at 04:09 PM.
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