Tapped Horn For Car

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Input screen coming right up.

This is it. The SPL numbers are modeled for being in a corner. I know you should run it at .5 Pi. But the truth is you get pretty much what I posted. In a car you get .5 Pi SPL levels. This little sub is good for a car or for a small home system. That's the actual reason for the redesign for a small home system.

Mark

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sound's good, i look forward to your folding scheme.

I am modifying for a 35-40hz low cut-off for use along side a line array PA system i'm designing, i ended up with a 29ltr box. the next best i have been able to sim is 2 TB w8's in a 40ltr box at ~122db with a smaller bandwidth.
 
Hi Curtisc

The new redo is for a dual 6 1/2" design. It uses the Anarchy 6 1/2" woofer as a replacement for the very good but not to cheap SDX7.

The dual TRIO8 design will be available from the manufacturer Creative Sound Solutions.

So how large a venue do you plan on filling with this box? It is not designed for PA! It's designed for home and or car. PA will need a great deal more air movement. Possibly a dual front loaded horn like you can find on this subwoofer forum. I modeled one of JLH's dual MCM horns with TRIO8's and it really performed.

Mark
 
i'm not looking for huge venues for this, that is what my ev sx500 and dayton DVC FLH's (redesign of JLH's dual MCM) are for, but that stuff is huge and heavy! I use this stuff for dj'ing, the biggest venue i accept is basketball courts, and very few small outdoor things.

i am wanting a second system for smaller bar/diner venues that the ev's are just way to big and that don't need a hole lot of bass. i modeled 120 db out of a dual anarchy box, which should be plenty for my desires, especially for the overall size and cost of the drivers.

i kinda just want to emulate a different popular line array/small box sub that i don't have the $2k per side to buy (nor would i, no highs no lows.......)
 
i'm looking at the triio8, which i can get ~117db with a single, so overall cost is lower per box and at 8 ohms, it would be easy to parallel connect two for ~122.

I tend to keep all my sims in 1 pi since i am usually against a wall and corner load if i can. i know that building the box i can expect ~3db loss. I have to high pass any design i have came up with so far, but the triio looks interesting with the xmech of 19....

The important design trade for my use is size, so anything that is 1-2cuft, works fine. Also, many of the patrons listening to this future system don't like huge amounts of bass, so ~110 db is probably enough for them. the baseline room size for my LA/small sub is 25x45 with 11ft ceilings (and i am against the back wall)
 
Well your using the right box.

We got peaks of 124 in a corner in a small room. A larger venue with a couple stacked to couple the mouths you will get what your looking for. Use the multiple horn tool and you can see what you will get for a stack of two or four. If you are loading a room a bass stack will all the boxes in one good corner will usually get more clean SPL.

Mark
 
An externally hosted image should be here but it was not working when we last tested it.


OK you guys pick the design you want posted. Keep this in mind there is no particular magic going on here. Basically a bit better response than a standard vented box but with out the box sound. So horn like is the best description.

The difference? One does 40hz or there about the other does 30hz or there about. The lower one is a bit larger.

So you guys pick and I'll post the plans.

Mark
 
Hi Radman12. Nice link!

2.53 cubic feet in size. or about 72 litres. The last version of the UNHORN 1 was 9" x 13.25" x 16.5" Not that big. 1.12 cubic feet or 32.24 litres.

The 30hz version will be about another cubic foot or close to the size of the box linked to. Add in the second driver and you get a bit more output. Now I have a challenge in making the 30hz box smaller! I likes a challenge.

Mark
 
I know you guys are well past this, but I constructed an Unhorn and wanted to share my results and give my thanks to mwmkravchenko for his unique design.

Anyway on with a couple of pics. I got the local timber guys to cut the shapes for me, unfortunately they stuffed up one of the cuts (its upside down), but I should be able to work around it.

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I haven't completed this, I am still yet to glue any seams so there are a few leaks and whatnot. Despite this, it does sound very neutral, and drops low enough in my ute. Its a very very small cabin, so it does sit right behind me. I'll report back when I get the project completed.
 
CAUTION: Thread Zombie + LONG post!

Hello DIYA, allow me to play doctor and bring this dead thread back to life. After seeing some PWK videos, I started to wonder about tapped horn designs which Google led me here when I searched "tapped horn in car". The info and the links are tremendous and quite frankly make my head spin. This is a whole new level of car audio for me. This is all going in my truck and may be a fun experiment for anyone willing to do the math.

I want to turn as much of my bed into a tapped horn as needed. The pic below shows I care more about hauling sound then stuff (which I rarely do and can use a trailer if I do). So with that out of the way, here's how you stuff EIGHT 12"s into a truck and still keep the back seat lol.
VID00375.jpg


Here's one to show it coming out and the length it takes up in a 6' bed (almost all of it lol)...
VID00351.jpg


Now I know tapped horns can play very low and loud. I need one that can do 35hz on down, so I imagine a couple of 15" drivers should do the job. I have a ported enclosure designed for four Anarchy 6.5" that fits perfect under the back seat that will cover the 35-80hz area, where the mids and highs take over... not needed but here's a pic of that one.
VID00341.jpg


So here's the fun part for anyone that ever wanted to make a truck bed size TH.
2000 actual RMS on hand to feed the subs. $400 budget for drivers (maybe more if needed)... would like it to play 35hz and lower and be loud. I know that low and loud is not small and small and low is not loud. I can post up dimensions if anyone is interested in trying to help me with this. :cheers:
Since you guys know what will work, the driver size can be any and any number as long as it fits into a reasonable budget and can go low and loud. Obviously have enough power so that's not an issue and it does not have to take up the whole bed but I'm sure it may lol.
 
Hello DIYA, allow me to play doctor and bring this dead thread back to life. After seeing some PWK videos, I started to wonder about tapped horn designs which Google led me here when I searched "tapped horn in car". The info and the links are tremendous and quite frankly make my head spin. This is a whole new level of car audio for me. This is all going in my truck and may be a fun experiment for anyone willing to do the math.

I want to turn as much of my bed into a tapped horn as needed. The pic below shows I care more about hauling sound then stuff (which I rarely do and can use a trailer if I do). So with that out of the way, here's how you stuff EIGHT 12"s into a truck and still keep the back seat lol.
VID00375.jpg


Here's one to show it coming out and the length it takes up in a 6' bed (almost all of it lol)...
VID00351.jpg


Now I know tapped horns can play very low and loud. I need one that can do 35hz on down, so I imagine a couple of 15" drivers should do the job. I have a ported enclosure designed for four Anarchy 6.5" that fits perfect under the back seat that will cover the 35-80hz area, where the mids and highs take over... not needed but here's a pic of that one.
VID00341.jpg


So here's the fun part for anyone that ever wanted to make a truck bed size TH.
2000 actual RMS on hand to feed the subs. $400 budget for drivers (maybe more if needed)... would like it to play 35hz and lower and be loud. I know that low and loud is not small and small and low is not loud. I can post up dimensions if anyone is interested in trying to help me with this. :cheers:
Since you guys know what will work, the driver size can be any and any number as long as it fits into a reasonable budget and can go low and loud. Obviously have enough power so that's not an issue and it does not have to take up the whole bed but I'm sure it may lol.

If I am not mistaken, I published some of the first tapped horn designs for the car, and I've documented in-car designs to a great extent. You can see my posts on diymobileaudio.

Before you go and chop up your car, I would spend some time evaluating what your goals are for the project.

Here's why -

The overall size of a horn is directly related to the size of the driver. This is a lot different than a sealed or a vented box, where there isn't a huge correlation between box size and driver size. For instance, I've seen 12" woofers that fit in a half cubic foot sealed box, and I've seen eights that need a full cubic foot to get proper response.

Horns don't work like this. With a horn, box size gets very VERY large as the size of the driver gets bigger.

That's the reason that nearly all of my published designs use eights. By using an eight instead of a ten or a twelve, I keep box size under control.

Also, another complication with tapped horns is that it's possible to have TOO MUCH low bass!

I know this is a strange problem to have, but it's very real! Particularly when you're building a box for a car, where it's trivially easy to get low bass due to cabin gain.

To make a long story short, before you tear the car to pieces, I'd recommend investing some time determining what your goals are for the project, and then determining if a huge horn with twelves is the way to get there. Based on my experience building numerous tapped horns for cars, I'll bet that twelves are going to play TOO LOW and will require a box that's unnecessarily big.

 
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