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Stereo Integrity 24" subwoofer - not kidding! - Page 5

post #121 of 522
Quote:
Originally Posted by N8DOGG View Post

I'm still wondering what I'm gonna do with my 4 x XXX's......
The biggest box I'll consider for the 24" would be 7cf and even thats pushing it. Any need for bigger than that and I'll want nothing to do with it.

+1
post #122 of 522
Quote:
Originally Posted by brian6751 View Post

Wonder how big the sealed box will need to be. 6cft. With a 24" that could handle 1800 watts would be bad ass.

hahaahahahahaahahah, i just asked that over at home theater shack. guess we should look for updates 3 -4 months from now............
post #123 of 522
Well I hope we hit the update before the 3-4 month time-frame as stated above. First off I would like to say thank you to everyone who has been so patient with us over the last month or so. These past four weeks or more we have been moving to a new, bigger, much bigger, location that is about an hour away from where we were. During that time our web site has been down, email has been down, phones have been down, etc. We have also received multiple very large 40' and 52' containers full of subwoofers and subwoofer parts which take a lot of people and time to unload because none of it is palletized in the containers. It's been a real mess but thankfully everything is fixed now and working properly.

Now onto the 24. We received our new soft parts and hard parts for our 24" IB subwoofer. We will be building a few different versions of the 24" woofer with the new parts and a particular combination may yield the numbers some of you are looking for in order to use this woofer in a sealed or ported application. smile.gif I won't say anything more about that version (sealed/ported) yet but it looks pretty promising so far.

Now on to the pics. Here is how our woofer looked during the prototype phase. We only received enough parts to build two woofers and here is how the first woofer looked inside under florescent lights:



Here is how the front of the woofer will look now with the new soft parts:



And here is how it looks up close under florescent lights:



I don't know why the inside picture turned out looking so light but the surround and dust cap are darker in person. For reference the multi-piece gasket and basket are a solid gloss black but it looks grey'ish in the last picture. Just the way my camera took it. The first inside picture is a much more accurate example of what it really looks like.

This post may be a little premature because there are probably going to be a lot of questions about the driver and its future progress. I can not say anything about the future sealed/ported possibility until we build one and measure it. We do have the parts to make the IB version of the woofer and will open up ordering on our web site within this next week. We also don't know enough about the multi-piece gasket but at this point it looks like we will be able to mount it to the woofer before customers receive it so all you have to do is screw it in using the mounting holes. We literally just un-boxed these new items the last hour today before we left for the weekend.

I will be in the shop very early on Monday to build up a few different versions of this woofer and measure specifications. Having said that, I will not be at the computer but rather in the build room assembling these massive woofers. Look for a video or two of these things throwing down by the middle of next week. biggrin.gif

PS: We actually have a web page for the 24" IB subwoofer with full specs, coil options, and pricing now.
post #124 of 522
Can this woofer be run in a thick front baffle and open up to the rest of the room it is sitting in? Rather than putting in a wall and leave the back open why not build a sealed sub with the back open to the theater room? Like running in free air but with something to hold it down.
post #125 of 522
Sounds like it'd be operating as dipole sub.
post #126 of 522
I will buy 4 of these but looking at options for use. What about huge sonosubs with sealed drivers on each end? The tube will be 12 feet long and as wide as I can find, at minimum over 1200 liters. What are the pros and cons? I can build a baffle wall but the back space would be less than the open room but still more than the tubes. I am trying to contain the bass in my room rather than cutting holes in my wall and now have major bass in my house!
post #127 of 522
Quote:
Originally Posted by gpmbc View Post

Sounds like it'd be operating as dipole sub.

Yes. That it would be. A dipole sub. smile.gif

These probably could pull it off too. It sure would have the displacement to get the job done. I think. Depending on the overall Qts it may need more or less eq to bring the bottom up but it is still subject to the additional 6dB/oct dipole roll off.

Quote:
Originally Posted by MKtheater View Post

I will buy 4 of these but looking at options for use. What about huge sonosubs with sealed drivers on each end? The tube will be 12 feet long and as wide as I can find, at minimum over 1200 liters. What are the pros and cons? I can build a baffle wall but the back space would be less than the open room but still more than the tubes. I am trying to contain the bass in my room rather than cutting holes in my wall and now have major bass in my house!

James, I'd need to know more about what room you would have to work with but it sounds like a sturdy false wall baffle for your speakers and subs might be the trick for you.
post #128 of 522
Sooo... according to the T/S listed on the SI site these would work in as "little" as 10cuft per driver. biggrin.gif Qtc right about .9 but it is producing 118dB @ 20hz (130dB @ >50hz) with 4,400w input. Perfect for you 14k owners. You all might want to double down on these drivers. tongue.gif

Oh and that's the excursion.


Edited by Scott Simonian - 8/10/13 at 8:57am
post #129 of 522
I might just build the baffle wall, 300 cubic feet.
post #130 of 522
MK and his upgradeitis.....lol.
post #131 of 522
Hopefully if the HT version comes available it will be horn friendly. Actually no, that's retarded. I'm retarded. You're retarded.
post #132 of 522
I will be building a lower Qts version of this monster this week. biggrin.gif
post #133 of 522
I want to order! IB version.
post #134 of 522
Once specs come alive on a lower Qts version, I would love to see how these stack up to the RCF 21s I currently run. If they stomp in 12-14cubes tuned to 25ish, I just might have to. They aren't cheap, but aren't double the cost either. Patiently awaiting specs, I have some tops to build first smile.gif
post #135 of 522
During the build of the lower Q version I was able to snag a picture of a robust 12" woofer next to the 24". We are having more solid aluminum adapter/spacer rings made starting this week which is holding off full production. However, as soon as the rings are CNC machined out we will open up ordering on the site.
post #136 of 522
You know where I stand!
post #137 of 522
How many ya gettin MK?
post #138 of 522
Wow, I think I found a driver that would keep up with my Maelstrom 21"!

I'm going to have to figure out how to afford one of these, once the HT version is ready!
post #139 of 522
Excellent. smile.gif
post #140 of 522
Awesome!
post #141 of 522
Oh boy, and let it begin. The multi-18 builds are SOOOO last year.....
post #142 of 522
Seriously... I was going to start construction on a pair of horns today, but decided to hold off until the low Q specs are available....
post #143 of 522
Thread Starter 
Quote:
Originally Posted by Stumbo View Post

Seriously... I was going to start construction on a pair of horns today, but decided to hold off until the low Q specs are available....

if the horns your going to build are the usual THT or F20, one of these drivers alone will probably cost more than both of your horns total build combined
post #144 of 522
just need a horn with one of these
post #145 of 522
Quote:
Originally Posted by cookieattk View Post

just need a horn with one of these

I just couldn't do it...

Would be forced to go sealed or ported...Just so I could show them off to the world.

I will own a pair at least, just for that very reason.

biggrin.gif
post #146 of 522
Quote:
Originally Posted by brian6751 View Post

if the horns your going to build are the usual THT or F20, one of these drivers alone will probably cost more than both of your horns total build combined

I have a pair of f20s, and I was starting a pair of lilwreckers with si ht15s, but then came the SubMaximus with si ht18s and that made me hesitate.... But now this driver (low q version) may be horn friendly.... However I'll probably need to pick up a clone amp.... And if I'm going to do that and drop ~$1500 on a pair of drivers they will need to outrun a pair of ghorns...

My life is so hard.
post #147 of 522
What material is the cone made of? It has a wet look to it.
post #148 of 522
Quote:
Originally Posted by Electrodynamic View Post


a robust 12" woofer next to the 24"


meh, that's merely an optical illusion .... the zebra pad spacer makes the 24" appear much bigger
post #149 of 522
Quote:
Originally Posted by FOH View Post

meh, that's merely an optical illusion .... the zebra pad spacer makes the 24" appear much bigger

Hahaha!

Here's another comparison picture I took today. This is what the front of the production 24" woofers will look like (with the big aluminum bolt down pieces around the edge of the surround, the good looking dust cap, etc). This is a picture of an Obsidian Audio 12" woofer on the left and our 24" IB woofer on the right:

post #150 of 522
Quote:
Originally Posted by gpmbc View Post

What material is the cone made of? It has a wet look to it.

The cone is made of a paper pulp mixture with an epoxy swirl finish on top which gives it the wet look.
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