Dual Sono Subs build - AVS | Home Theater Discussions And Reviews
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post #1 of 21 Old 08-10-2014, 05:32 PM - Thread Starter
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Dual Sono Subs build

I have been planning this build since January, but for one reason or the other I just couldn't get the project off the ground. During the same time, I have either built or helped build at least thirty subs, all Marty variants but mostly cubes, for friends and friends of friends. This time around, I wanted to try something different, something I haven't done before. After having completed most of the process (all I have left to do is paint, add the legs and install the drivers), I have to say that building sonosubs are much easier than building "box" subs (flat packs notwithstanding) for at least three reasons:

1) They are much lighter in overall weight
2) They don't need internal bracing (which is such a time consuming step--for me at least)
3) No Sanding necessary

Actually, the only challenging part was getting the baffles and top plates in position. But thanks to a really helpful hint from pdxrealtor, I was able to pry them into place using a 2 x 2 from the opposite ends of the tubes. Worked great, thanks pdx!

The Specs are:

SI 18 D4 Drivers, wired for 2 ohms
24 inch Sonotubes, 63 inches tall
10 inch inner tubes (vents) that are 42 inches long
Approximately 14 cu in. volume
Tuned to around 16.5 Hz
3 pillows (wal mart) wedged between the vent and the outer shell. Placed about half-way inside tubes
Behringer inuke 3000DSP, stereo mode


I will post more pics after painting and installation of legs..

Thanks to pdx for all the helpful hints!!

Thanks to LTD02 for his continued help---and for simulating this build.

Rick
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post #2 of 21 Old 08-10-2014, 06:24 PM
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Dang those things are monsters! Is that considered an LLT?

I too really like building the tube enclosures and think they are super easy.
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post #3 of 21 Old 08-10-2014, 06:45 PM
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I agree the sonotube build is a lot easier. But finding the big tubes is not easy.

The lightweight is nice for when the wife wants to vacuum.
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post #4 of 21 Old 08-10-2014, 06:49 PM
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30 subs wow !!!!
That's a lot. Cool project
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post #5 of 21 Old 08-10-2014, 06:53 PM - Thread Starter
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Quote:
Originally Posted by Samps View Post
I agree the sonotube build is a lot easier. But finding the big tubes is not easy.

The lightweight is nice for when the wife wants to vacuum.
Funny you should say that, I just watched the wife move them around and vacuumed the area they were in. She just tilted them and rolled. No way she could have done that with other box subs.
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post #6 of 21 Old 08-10-2014, 06:55 PM
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If you're lucky enough to have a Menards nearby, they'll ship to the store, and decently priced, as well. One place local quoted me $124 for a 12' long, 20" diameter tube... plus 9.5% tax. Picked it up while visiting my dad in Indiana for $64. The ride home was ... 'nuther story, but worth it to me.

We never grow until we're pushed outside the boundaries we are comfortable within...
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post #7 of 21 Old 08-10-2014, 06:56 PM - Thread Starter
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Quote:
Originally Posted by chalugadp View Post
30 subs wow !!!!
That's a lot. Cool project
Yeh Donny, there are a lot more mart/Marty cubes in the wild than we know. Can,t wait to see how you tux 1099 centre channel turn out
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post #8 of 21 Old 08-10-2014, 06:59 PM
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Just updating now
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post #9 of 21 Old 08-10-2014, 07:04 PM - Thread Starter
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Quote:
Originally Posted by pdxrealtor View Post
Dang those things are monsters! Is that considered an LLT?

I too really like building the tube enclosures and think they are super easy.
Yeh I think they just might qualify as LLT. Truth is, I was planning to go a bit taller but the store did a terrible job cutting the tubes. They cut it at a weird angle that the largest straight cuts I could make we're at 63 inches each
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post #10 of 21 Old 08-10-2014, 07:07 PM - Thread Starter
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Originally Posted by chalugadp View Post
Just updating now
Cool, am following your progress. BTW, you still have Joes 228s? Must be hard to part with them
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post #11 of 21 Old 08-10-2014, 07:18 PM
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Originally Posted by atabea View Post
Cool, am following your progress. BTW, you still have Joes 228s? Must be hard to part with them
He was going to take them today but I still have them. I honestly can say with his 3 228 jtrs ad my micro-cubes I reached happiness with my system. ( once I get new surrounds)

Watching movies and music I stopped wondering how would sound better and just enjoyed the sound. I am pretty sure 1099 will be very similar to 228.
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post #12 of 21 Old 08-10-2014, 07:24 PM - Thread Starter
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Originally Posted by chalugadp View Post
He was going to take them today but I still have them. I honestly can say with his 3 228 jtrs ad my micro-cubes I reached happiness with my system. ( once I get new surrounds)

Watching movies and music I stopped wondering how would sound better and just enjoyed the sound. I am pretty sure 1099 will be very similar to 228.
Well it's good that the 1099 will be close cause I sure can't afford a JTR LCR setup. But I can surely shoot for some 1099s.
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post #13 of 21 Old 08-10-2014, 07:28 PM
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Well it's good that the 1099 will be close cause I sure can't afford a JTR LCR setup. But I can surely shoot for some 1099s.
Me neither. Wife would kill me
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post #14 of 21 Old 08-11-2014, 04:25 AM
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Atabea- did I read that correct in that you are using a 10" round port? I was at one time considering an 8" round port for my full sized MartySubs in the design stages, and I actually went to my local plumbing supply store and purchased some 8" pipe. That stuff was so big that I could almost fit my entire head in there!


Where are you guys finding these Sono-Tubes at? I have inquired at both my local Lowes and Hone Depot and neither seem to carry them.
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post #15 of 21 Old 08-14-2014, 06:17 PM - Thread Starter
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Atabea- did I read that correct in that you are using a 10" round port? I was at one time considering an 8" round port for my full sized MartySubs in the design stages, and I actually went to my local plumbing supply store and purchased some 8" pipe. That stuff was so big that I could almost fit my entire head in there!


Where are you guys finding these Sono-Tubes at? I have inquired at both my local Lowes and Hone Depot and neither seem to carry them.
He Marty, I am in Canada and I also had no luck at Home Depot and Lowes. However, I found quite a few places Construction Supply Stores in the GTA (Toronto area) that stock just about any size Sonotubes.
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post #16 of 21 Old 08-14-2014, 06:22 PM - Thread Starter
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I managed to paint and install legs today.
Legs are kinda mismatched (colorwise) but I will be painting them black anyway.

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post #17 of 21 Old 08-15-2014, 03:21 AM
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Did you really use a 10" diameter tube as the port? Wouldn't a 10" diameter tube be way way way too big? My goodness you could stick your head in a 10" tube!
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post #18 of 21 Old 08-15-2014, 02:53 PM
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Originally Posted by Martycool007 View Post
Where are you guys finding these Sono-Tubes at? I have inquired at both my local Lowes and Hone Depot and neither seem to carry them.

Marty, if you've got a Menards near you it's the place to go. You can purchase online and have it shipped to the store for free. For me it was less than half of buying from a construction supply store. Regular price is something like $90 for a 12' x 24" diameter tube, and they often run a 11% off sale.
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post #19 of 21 Old 08-15-2014, 03:26 PM - Thread Starter
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Did you really use a 10" diameter tube as the port? Wouldn't a 10" diameter tube be way way way too big? My goodness you could stick your head in a 10" tube!
Marty, I was a bit surprised too but LTD simmed it and that's what he recommended. Strangely, it doesn't look all that odd when you insert it inside the larger, outer tube.
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post #20 of 21 Old 12-15-2014, 05:06 PM
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Marty, I was a bit surprised too but LTD simmed it and that's what he recommended. Strangely, it doesn't look all that odd when you insert it inside the larger, outer tube.
So, what's the latest? Any pics of them in place? Any REW testing? Listening impressions?

"The wise understand by themselves; fools follow the reports of others"-Tibetan Proverb
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post #21 of 21 Old 12-15-2014, 06:40 PM - Thread Starter
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So, what's the latest? Any pics of them in place? Any REW testing? Listening impressions?

Thanks for asking, Augerhandle.

I meant to update this thread but never got around to it. Don't have REW or other similar device but I intend to get around to that too. I did, however, level match all four subs though (the two tubes up front and two (marty) cubes in the near-field), prior to running Anthem ARC. As for listening impressions, I am finally in a place where I don't feel the need to "upgrade" in this particular area. I know, I know, this is AVS and the DIY section to boot so I expect the upgrade bug will soon hit me and I will be busy building something new. In the meantime though, I am super impressed with both the quality and quantity of bass that I now have. The tubes, by themselves, are more than enough to overwhelm a large room but I do like what the (supporting) cubes do in balancing out the room. I'll put it this way: I am really glad I built those two monster tubes and since they hide behind my AT screen, it's icing on the cake.

As they say, if you don't post pictures it didn't happen---so here you go. Not the best pictures and I have since painted the legs and base black so everything blends. You will note from the graphs, I did not use a LPF but Anthem made the appropriate cutoffs anyway. Altogether, it sounds marvelous.
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