Best Compact Tapped Horn Sub for DJ PA?

Status
Not open for further replies.
Is that (trailer) shell something you built?
Yes, used SmartPanel, which is strong and very weatherproof, comes primed, roll on house paint for the finish coat.

The old trailer kit I used is not as good as the Harbor Freight kits.
 

Attachments

  • Trailer.png
    Trailer.png
    81 KB · Views: 308
Last edited:
800 watts should get you about 24-25 db of gain. Based on 93 db sensitivity. You are still peaking out around 117 db with 1 cab
24 dB gain over one watt is 250 watts.
Based on 93 dB one watt one meter loudspeaker sensitivity, 800 watts with no power compression should produce 122 dB SPL.
 

Attachments

  • Watts:dB.png
    Watts:dB.png
    42.9 KB · Views: 297
Last edited:
A nice thing about the Labs is you can use them in so many designs. Start with Welter's dual12 reflex then when you have a way to transport them build some larger horns.
Yes they do work well in many designs.
If you take the pair of Lab 12 and put them in a Keystone (also my design) they have almost six dB more output in a cabinet twice the size.

Cut the Keystone in half vertically, you have a cabinet the same volume (but tall and thin, as the OP wants) as the WS Lab 2x12"BR that puts out nearly the same LF and more upper bass with one cone and half the power.

The Keystone (full or 1/2 width) or MSGR's PAL12 both offer different shapes with with higher output than the BR.

Art (has two WS Lab 2x12" BR for sale) Welter
 
....The old trailer kit I used is not as good as the Harbor Freight kits.....

I have both the Northern tool and Harbor Freight trailer. Both are about the same IMO.

I put aluminum plate on one and outdoor Plywood on the other. Both work as expected for the money.

On both I mounted the fenders to the front half of the trailer and redrilled the support bracket holes in the fender. Then I mounted the lights on the fenders so the wires never fold.
 
Hey, I want to thank everyone for all your comments and help with this. I have learned a lot in just the past few days. We are starting to realize that there is no way to get great low-end response without either huge cabs or huge power amps. Thanks for being patient!

I think I was guilty of trying to get too much from too little, and I now realize that if we are going to to this right we shouldn't try to take shortcuts and be cheap. I had a long talk about this with my brother last night and we are going to selling stuff (dirt bikes, sailboard, etc.) and put our money into having two decent sound systems.

My brother picked up a used Eminence 15LF-2 yesterday and is going to build one of the SS-15's in the next week or two. Then we can compare that to our T39 and see how we like it.

We are also thinking about building a pair of LAB12 loaded BR cabs so we can see how we like those and they should be more portable too.

We are pretty happy with our EV speakers, so we will probably just get another pair of those. The Behringer 3000DSP is really nice, but maybe we should get the 6000DPS just to be safe?

Please keep the comments and suggestions coming! We are still trying to figure all this stuff out and need all the help we can get. Thanks!
 
Just curious why you need TWO sound systems? Why not start with one and see how it goes? DJ'ing is harder than you think it is. Also, keep in mind you need LIGHTS, and all the other stuff to properly setup at a party. You're in college, how about focusing on college...?
 
We are also thinking about building a pair of LAB12 loaded BR cabs so we can see how we like those and they should be more portable too.

We are pretty happy with our EV speakers, so we will probably just get another pair of those. The Behringer 3000DSP is really nice, but maybe we should get the 6000DPS just to be safe?
Re-read #66.
The Behringer amps don't have much duty cycle in the sub range, get one rated for twice the power you want to deliver.
 
Just curious why you need TWO sound systems? Why not start with one and see how it goes? DJ'ing is harder than you think it is. Also, keep in mind you need LIGHTS, and all the other stuff to properly setup at a party. You're in college, how about focusing on college...?

You sound like my dad - ha,ha!! My brother and I live an hour apart and gas costs and driving time will make two separate systems a necessity. He will likely be doing smaller, less profitable events, and I am hoping to bigger, better paying ones. And hey, subwoofers are a lot more exciting than poly sci, english, and calculus.
 
Re-read #66.
The Behringer amps don't have much duty cycle in the sub range, get one rated for twice the power you want to deliver.

Wow, actually I didn't see your post #66. It must have come in while I was replying to another post. Very good points. We are still considering LAB12 designs, nothing will happen until we get the SS15 built and see how we like the tapped horn sound.

I have never seen anyone using the tapped horn in our area. Very few folded horns too, but LOTS of BR cabs. How much are you selling your cabs for? Shipping would probably be ridiculous though? Thanks.
 
Ss15 won't be a good representation of bass sub 50hz from a tapped horn. 40hz on a ss15 is below it's tuning frequency and distortion increases down low.

You really need to choose a target extension and SPL then go from there and make sacrifices in size requirement and amp power.

I don't like the inukes for subs. I didn't even really like my crown xti 4000 for subwoofer duty. Compared to my qsc mx 1500 / 2000 and rmx 4050 amps I can pick out the qsc's as the better option each time. But that's a different story and my personal opinion. Besides i don't mind the extra workout from carrying the heavyweight amps 😀
 
Ss15 won't be a good representation of bass sub 50hz from a tapped horn. 40hz on a ss15 is below it's tuning frequency and distortion increases down low.

You really need to choose a target extension and SPL then go from there and make sacrifices in size requirement and amp power.

Aaaaaahhhhhhh!!!!! I am getting confused.

First off, the SS15 should have a lot more in the 40-50hz range, shouldn't it? Our T39 is definitely weak below 50hz and I thought the SS15 was pretty flat down to 40hz, then dropped from there.

Unfortunately, I am not sure what a 3db (or 6db) difference in sound really sounds like. I am not even really sure what SPL level we need. I see there are SPL apps for the iPhone, are they actually accurate?

Here are the specs for our tops:


ELX112 Passive 12" Loudspeaker Specifications:

Max. Measured SPL: 132dB



So, do we need to find a sub/amp combo that is capable of 132db if we want maximum volume? We definitely want solid response down to at least 40hz, hopefully a bit lower. Thanks for your help.
 
[special=]%[/special]
Is this the dual LAB12 cabinet you are talking about? I was playing around with the LAB12 in WinISD last night. Surely not to efficient, but great low end extension.


Ignore my post, Mr doom and Art did a good job of correcting. looks like 120 to 122 db max output at 800 watts. considerable better than I anticipated, however still cannot be used with a Inuke 6k, as the 6k is just 2 bridged 3ks, and the 3ohm nominal load of the weltersys dual lab 12 is lower than the minimum nominal impedance the 6k allows (4ohm).

For edm I prefer my subs about 10db hotter than my tops, but I gess thats personal preference. I understand you are not doing edm so take that with a grain of salt.
 
I like my inuke nu6000dsp just fine for subs, has no problem pushing 1000-1500 watts into each and sounds great. Paid $425 for it off amazon.

Behringer inuke NU6000 vs KAM KXD7200 bench tested - Speakerplans.com Forums - Page 1

I thought the same as well when all I had was my xti 4000 to power the subs. Then I did some A/B testing. Used my friend's inuke as well 😉

Not telling you guys what to buy. Just stating my personal experience.

If you want lightweight and quality on sub duty ask ART about the speaker power Sp amps. He seemed to like those!
 
Last edited:
Status
Not open for further replies.