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View Full Version : Best driver for 6ft3 pro sub



rws79
02-26-2010, 01:20 PM
My friend is looking for for the best driver or drivers to put into a six cubit foot enclosure. He is looking for High SPL'sl for music only. He would like it to hit hard down to 40Hz. He has two of these enclosures that he wants to use as bass bins for party/light DJ use. He was thinking two 15''s but I was thinking one peavey low rider 18" sub would get him more for his money. He has 900 watts at four ohms.

Paul O
02-26-2010, 01:29 PM
The Lowrider is only available in 8ohms as far as I know but two of these would easily outperform a pair of 15's.. more displacement and higher sensitivity.

rws79
02-26-2010, 01:50 PM
would two of them fit in a 6ft3 box. If so would you recommend venting or sealing it?

Paul O
02-26-2010, 03:26 PM
No that too small for two drivers, you want each one in it's own 6 cu/ft ported enclosure.

Ludo
03-04-2010, 12:31 PM
What about the

Eminence 4018LF http://www.parts-express.com/pe/showdetl.cfm?Partnumber=290-579

or the B&C 18TBX100 http://www.parts-express.com/pe/showdetl.cfm?Partnumber=294-676 ?

Louis

Music is life
03-08-2010, 08:18 AM
Don't see a "good" dual 15 getting any where near 40Hz in 6.3cu ft even if that is the interior size of the cab.
The 3015lf would start dropping off at 55Hz.
The 4015lf would start dropping off at 47Hz.
Both of those would however have bass peaks above that area so the actual -3 would be higher when used as a sub.
But with that in mind the dual 4015 would have a sensitivity of around 101db at one watt.

Someday I might build subs for rental and such in my local area. Dual 3015lf in 9cu ft. For a simple reflex, personally speaking I don't see anything better as per size-weight-spl-price.

An idea, build a cab just a bit bigger say 8cu ft and put two 3015lf in it.

AMC
03-08-2010, 09:16 AM
... personally speaking I don't see anything better as per size-weight-spl-price.



SPL vs. weight, folded horns will always win out, they do tend to occupy some additional volume, but they can weigh about half as much as a good BR cab, and put out an additional 3 - 6 db.

Randy L
03-08-2010, 10:38 AM
^^ Agreed, but the OP's friend already has the cabinets. Plus, for "light" DJ use, I think a folded horn might be a bit too large.

Music is life
03-08-2010, 11:28 AM
SPL vs. weight, folded horns will always win out, they do tend to occupy some additional volume, but they can weigh about half as much as a good BR cab, and put out an additional 3 - 6 db.


My thought was about "simple reflex". But yes great point after about 2 or so cabs. (depending on the design)

I was thinking that if one is planing on renting out bass horns, then one is stuck re-educating people about bass horns and how to use them. From talking to people "out there" in this neck of the woods I've found that everyone is already an expert in their own mind. :)

ampnation
03-08-2010, 02:11 PM
noob here myself, but know enough to say, a small cab like that, no matter what speaker goes into it, will limit the bass floor. He can get different cabs OR get the better performance, but not both. I am just learning myself, but I suggest downloading WinISD or Unibox speaker modeling software and plug the numbers in. It will be very enlightening. It was for me.

AMC
03-08-2010, 02:12 PM
My thought was about "simple reflex". But yes great point after about 2 or so cabs. (depending on the design)

Exactly, when you need two, go to horns.


I was thinking that if one is planing on renting out bass horns, then one is stuck re-educating people about bass horns and how to use them. From talking to people "out there" in this neck of the woods I've found that everyone is already an expert in their own mind. :)

There are some advantages in the rental department, because the back chamber is often (always?) sealed in a horn, it does not 'unload' like a BR cab will, and thus it will tend to be a little more robust. Also, with the driver completely hidden, it's hard to physically damage from things falling in to it/ being thrown at it.

Down sides are they are harder to build, but not too much. One problem I have been told from people 'out there' is that it is hard to rent equipment if it does not say JBL, EV, or something similar on it. People like brand names, regardless of quality, because it seems less risky. One solution, what ever driver you use, put a [POWERED BY BRAND X] badge on it.

ampnation
03-10-2010, 05:50 PM
One problem I have been told from people 'out there' is that it is hard to rent equipment if it does not say JBL, EV, or something similar on it. People like brand names, regardless of quality, because it seems less risky. One solution, what ever driver you use, put a [POWERED BY BRAND X] badge on it.

xlnt advice. I'll keep that in mind and make up some custom "Powered by Eminence/Selenium" badges when I build my new 2-ways with Delta Pro 12A's and Selenium D220Ti's. Maybe I can figure out a way of superimposing the logos.

Music is life
03-11-2010, 08:35 AM
xlnt advice. I'll keep that in mind and make up some custom "Powered by Eminence/Selenium" badges when I build my new 2-ways with Delta Pro 12A's and Selenium D220Ti's. Maybe I can figure out a way of superimposing the logos.

Hey Amp, if you don't mind, what horn you going to use on the "Selenium D220Ti's"?

ampnation
03-11-2010, 10:00 AM
Hey Amp, if you don't mind, what horn you going to use on the "Selenium D220Ti's"?

I'm not positive yet. A speaker builder I know recommends modeling with a Pyle horn in a PE trap cab, but I'm not sure the specific horn. Haven't modeled yet. I'm actually considering contacting a Bill Fitzmaurice recommended builder and having him build these for me and a Tuba 36. If I like the finished products, I'll buy more. I've just come to the realization I'm never really going to do the actual build myself and I should still come in cheaper than name brand retail like JBL SRX series. I expect to pay slightly more the first time around because I'll let the builder do the modeling and passive crossover design. I have finally decided to make them passive crossover with a bi-amp option for max flexibility.

Paul O
03-11-2010, 10:40 AM
My thought was about "simple reflex". But yes great point after about 2 or so cabs. (depending on the design)

A little known fact is that most true horn subs need a cluster of 4 or more to deliver their full advertised response, that's because it's near impossible to include enough mouth area in a single cab and keep it's size reasonable. And it usually takes about 4 double-18 cabs to match the output of 4 horn loaded subs, so horns may not be the best option in smaller numbers unless you can count on corner loading them all the time.

AMC
03-11-2010, 12:08 PM
Maybe I can figure out a way of superimposing the logos.

Be careful, if you do that, you are getting in to the trademark infringement area. (just get permission first) And correcting my own statement, perhaps it should say "Driven by ..." not having any actual power. My bad on that one.

One nice thing about the BFM stuff, you will be getting a know factor, you know it will work as needed from day 1.