"The Sublimator" An Infinity 1260w 18hz Tuned Offset Driver Folded Horn. - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 142 Old 04-07-2015, 08:49 PM - Thread Starter
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"The Sublimator" An Infinity 1260w 18hz Tuned Offset Driver Folded Horn.

So with what seems like every other thread in the diy section being either a sub or a sub horn thread I, being the very impressionable person that I am, also wanted to fit in and reap the benefits of horn loading a sub and corner loading a horn.

I should first give a MAJOR shout out to @tsloms . His patience and helpfulness have been paramount in the possibility of this project.

Here is a layout of the horn design.





Here is a cutlist of the horn.



These posted are original designs done by @tsloms himself.

My horn had to be modified slightly, (thankfully without any noticeable changes in performance). The original plans call for 84 inches in height. I only have 83 inches from floor to ceiling.

Originally I planned to take 1 inch from the driver enclosure to meet the 83 inch maximum, but then I remembered my geometry skills and came to the realization that it was too tall from corner to corner(from bottom right to top left corner) to be stood up once brought inside.

After shortening the horn 2.5 inches (1 inch from the driver enclosure, and 1.5 inches from the mouth. We end up with a horn that is 81.5 inches in height and 83 1/16 inches from corner to corner, which can now be allowed to be stood up in proper orientation in the corner with minimal damage to the ceiling.

Here is the frequency response graph.



As well as impedance and phase graphs.



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post #2 of 142 Old 04-07-2015, 09:10 PM
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Congrats
2 of these will be impressive
where are they going to go?

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post #3 of 142 Old 04-07-2015, 09:16 PM - Thread Starter
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Originally Posted by asarose247 View Post
Congrats
2 of these will be impressive
where are they going to go?
Well........ I'm only planning on one. And maybe a near field 1260w ported design to "smooth things out"

But the horn will go in the left corner.


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post #4 of 142 Old 04-07-2015, 11:19 PM
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Always fun to see more FLH designs being built. I look forward to seeing how much those peaks go away in the simulation compared to when built and measured.
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post #5 of 142 Old 04-07-2015, 11:59 PM
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This is a trademark violation.

Sublimator Duo
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post #6 of 142 Old 04-08-2015, 12:50 AM
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Be aware that "usually' where the sub looks best or where it fits best or where the SO thinks it should be ,
the answer is usually D: none of the above . . .the laws of physics are not swayed by opinion
tho your EQ capacity may just make it work out like you want, we will be waiting for the graphs
that will be interesting to see
I use HF small dollies under my horns, makes moving them around so much easier .02
and as a new design, has your designer any test protocols for you to run through so he can compare real world sweeps data to the model
Are you going to take it outside, open field testing with the mike and all that
just reading here at AVS and listening to the Big Dogs bark helps keep the edge and
you're up!

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post #7 of 142 Old 04-08-2015, 12:52 AM
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Will the new sub keep up with those mains?
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post #8 of 142 Old 04-08-2015, 02:44 AM
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What kind of output can we expect out of this thing?
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post #9 of 142 Old 04-08-2015, 04:59 AM
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Quote:
Originally Posted by Tip24/96 View Post
What kind of output can we expect out of this thing?
Here is the max output when using the Infinity Perfect 12VQ driver. The 1260/1262 will be about 1-2 db less due to less excursion. Not bad for a single 12" driver with around 300 watts driving it. I did take measurements on mine a while back and the peaks and dips were smoothed out a bit. The measurements with no smoothing are shown below as well. This is a measurement directly at the mouth. Once in room and corner loaded it will smooth out further.



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The build looks rather straight forward. Two sheets is all it really takes huh ? That's nice.
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post #11 of 142 Old 04-08-2015, 06:07 AM
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Dang Gary you're going from rebuilding htib speakers straight into building a horn. Nice.
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post #12 of 142 Old 04-08-2015, 06:23 AM
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Quote:
Originally Posted by Gary147852 View Post
Here is a layout of the horn design.
Your measurement looks nice, so it's not like this matters but your sim doesn't match your fold. This is really clear when comparing the last segment in each, in the sim the last segment has quite a bit of expansion, in the fold there's no expansion at all. Also in the measurement the second peak is around 47 hz whereas in the measurement it's closer to 60. Not sure if any of that has to do with the fact that you shortened it, but the low knee on the sim and the measurement match almost exactly.

Anyway, the fold isn't accurate but since the measurement looks good it doesn't really matter. Just letting you know for next time, this is something you can be aware of.
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post #13 of 142 Old 04-08-2015, 06:25 AM
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Tsolms what is the 48hz peak from?

Was this a in room response sweep?

It appears that the peaks were all shaved by 1-2db's so thats good to see.
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post #14 of 142 Old 04-08-2015, 06:26 AM
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I think you'll have to find a new place to store the remotes.

A horn (or 2) is on my list.
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post #15 of 142 Old 04-08-2015, 06:41 AM - Thread Starter
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Quote:
Originally Posted by asarose247 View Post
Will the new sub keep up with those mains?
I certainly hope so.

Here is my current frequency response.



I'm building these.











Here are all the currently released overnight sensation speakers.



all the overnight towers I have seen recently are 2 way mtm designs.









My prediction is that everything will be much smoother.

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Last edited by Gary147852; 04-08-2015 at 09:07 AM.
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post #16 of 142 Old 04-08-2015, 06:42 AM - Thread Starter
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tsloms posted the measurements.

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Last edited by Gary147852; 04-08-2015 at 06:45 AM.
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post #17 of 142 Old 04-08-2015, 07:03 AM - Thread Starter
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...

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Last edited by Gary147852; 04-08-2015 at 08:48 AM.
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post #18 of 142 Old 04-08-2015, 07:40 AM
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Whoa this would fit perfect behind my couch! Or anyone's couch! It would almost fit under the bed too.... hmm...
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post #19 of 142 Old 04-08-2015, 10:24 AM - Thread Starter
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Quote:
Originally Posted by Jay1 View Post
Dang Gary you're going from rebuilding htib speakers straight into building a horn. Nice.
Yeah those were just practice.

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post #20 of 142 Old 04-08-2015, 10:25 AM - Thread Starter
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Quote:
Originally Posted by diy speaker guy View Post
Your measurement looks nice, so it's not like this matters but your sim doesn't match your fold. This is really clear when comparing the last segment in each, in the sim the last segment has quite a bit of expansion, in the fold there's no expansion at all. Also in the measurement the second peak is around 47 hz whereas in the measurement it's closer to 60. Not sure if any of that has to do with the fact that you shortened it, but the low knee on the sim and the measurement match almost exactly.

Anyway, the fold isn't accurate but since the measurement looks good it doesn't really matter. Just letting you know for next time, this is something you can be aware of.
That is something you'll have to take up with @tsloms . I'm just a noob.

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post #21 of 142 Old 04-09-2015, 05:34 PM
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Quote:
Originally Posted by diy speaker guy View Post
Your measurement looks nice, so it's not like this matters but your sim doesn't match your fold. This is really clear when comparing the last segment in each, in the sim the last segment has quite a bit of expansion, in the fold there's no expansion at all. Also in the measurement the second peak is around 47 hz whereas in the measurement it's closer to 60. Not sure if any of that has to do with the fact that you shortened it, but the low knee on the sim and the measurement match almost exactly.

Anyway, the fold isn't accurate but since the measurement looks good it doesn't really matter. Just letting you know for next time, this is something you can be aware of.
The fold would be 100% accurate if the corner brace in the last corner were larger. I modeled it with a larger brace and the small one and there was minimal difference in response. Since the corner brace didn't matter I kept it smaller. The drawing and response curve are the standard sized horn that I made. the slightly shorter one that Gary is building has close response to this but just slightly shorter.

Quote:
Originally Posted by chrapladm View Post
Tsolms what is the 48hz peak from?

Was this a in room response sweep?

It appears that the peaks were all shaved by 1-2db's so thats good to see.
This response was measured about 1' from the mouth of the horn. There may have been some room interaction at that point to cause the lower peak. It did work out slightly better than the model and does sound extremely clean and effortless. I enjoy how the folded horns filter out the driver harmonics.
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post #22 of 142 Old 04-09-2015, 08:32 PM
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Quote:
Originally Posted by Gary147852 View Post
So with what seems like every other thread in the diy section being either a sub or a sub horn thread I, being the very impressionable person that I am, also wanted to fit in and reap the benefits of horn loading a sub and corner loading a horn.

I should first give a MAJOR shout out to @tsloms . His patience and helpfulness have been paramount in the possibility of this project.

Here is a layout of the horn design.





Here is a cutlist of the horn.



These posted are original designs done by @tsloms himself.

My horn had to be modified slightly, (thankfully without any noticeable changes in performance). The original plans call for 84 inches in height. I only have 83 inches from floor to ceiling.

Originally I planned to take 1 inch from the driver enclosure to meet the 83 inch maximum, but then I remembered my geometry skills and came to the realization that it was too tall from corner to corner(from bottom right to top left corner) to be stood up once brought inside.

After shortening the horn 2.5 inches (1 inch from the driver enclosure, and 1.5 inches from the mouth. We end up with a horn that is 81.5 inches in height and 83 1/16 inches from corner to corner, which can now be allowed to be stood up in proper orientation in the corner with minimal damage to the ceiling.

Here is the frequency response graph.



As well as impedance and phase graphs.



Looks like this will be a spectacular build. I'm across the bridge in Shreveport; would love to hear it once built
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post #23 of 142 Old 04-10-2015, 08:28 AM - Thread Starter
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Looks like this will be a spectacular build. I'm across the bridge in Shreveport; would love to hear it once built
i was beginning to wonder if i was the only one on the forum from around these parts.
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post #24 of 142 Old 04-10-2015, 11:36 AM
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Originally Posted by Gary147852 View Post
i was beginning to wonder if i was the only one on the forum from around these parts.
It does seem as though most of the more experienced bass heads are either from the Northeast or the West. I've looked at horn designs myself and they seem daunting, will you have someone assisting you with your build?
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post #25 of 142 Old 04-10-2015, 09:54 PM - Thread Starter
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It does seem as though most of the more experienced bass heads are either from the Northeast or the West. I've looked at horn designs myself and they seem daunting, will you have someone assisting you with your build?
At this current point of the build phase I do not have a helper planned.

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Last edited by Gary147852; 04-10-2015 at 10:16 PM.
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if this is done up in 3/4 ply , I recommend a perusal of jmpst3's LOWARHORN construct and his use of the Kreg sysytem
except for sealing your chamber, you could knock this out in about a week
it resembles in many ways a THTLP except for the last extra bend which has no expansion , just a .02 observation


when do we get to see the pics?

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post #28 of 142 Old 04-10-2015, 11:23 PM - Thread Starter
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Quote:
Originally Posted by asarose247 View Post
if this is done up in 3/4 ply , I recommend a perusal of jmpst3's LOWARHORN construct and his use of the Kreg sysytem
except for sealing your chamber, you could knock this out in about a week
it resembles in many ways a THTLP except for the last extra bend which has no expansion , just a .02 observation


when do we get to see the pics?
I get paid Friday at which point I'll purchase the wood. I was actually thinking of using osb seeing as this is my first build and osb is cheap.

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post #29 of 142 Old 04-11-2015, 05:44 AM
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Quote:
Originally Posted by asarose247 View Post
if this is done up in 3/4 ply , I recommend a perusal of jmpst3's LOWARHORN construct and his use of the Kreg sysytem
except for sealing your chamber, you could knock this out in about a week
it resembles in many ways a THTLP except for the last extra bend which has no expansion , just a .02 observation


when do we get to see the pics?
It does look similar but this design has quite bit more horn length.
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post #30 of 142 Old 04-11-2015, 06:08 AM
 
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I get paid Friday at which point I'll purchase the wood. I was actually thinking of using osb seeing as this is my first build and osb is cheap.
Sometimes HD has 3/4 ply on sale for special buy for $35 sheet. It's the pretty looking sanded furniture grade. That might work for you.

OSB can work just less pretty.
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