AVS Forum banner
1 - 20 of 142 Posts

·
Registered
Joined
·
596 Posts
Discussion Starter · #1 ·
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.



 
  • Like
Reactions: tsloms

·
Premium Member
Joined
·
5,621 Posts
Congrats
2 of these will be impressive
where are they going to go?
 

·
Registered
Joined
·
596 Posts
Discussion Starter · #3 ·
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.

 

·
Premium Member
Joined
·
5,621 Posts
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!:cool:
 

·
Registered
Joined
·
1,162 Posts
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.



 

·
Registered
Joined
·
1,416 Posts
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.
 

·
Registered
Joined
·
596 Posts
Discussion Starter · #15 · (Edited)
Will the new sub keep up with those mains?:rolleyes:
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.
 

·
Registered
Joined
·
596 Posts
Discussion Starter · #16 · (Edited)
[MENTION=7756950]tsloms posted the measurements.
 

·
Registered
Joined
·
596 Posts
Discussion Starter · #17 · (Edited)
...
 

·
Registered
Joined
·
758 Posts
Whoa this would fit perfect behind my couch! Or anyone's couch! It would almost fit under the bed too.... hmm...
 

·
Registered
Joined
·
596 Posts
Discussion Starter · #19 ·
Dang Gary you're going from rebuilding htib speakers straight into building a horn. Nice.
Yeah those were just practice.
 

·
Registered
Joined
·
596 Posts
Discussion Starter · #20 ·
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.
 
1 - 20 of 142 Posts
Top