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-   -   dual 15" Reflex Sub help (http://www.diyaudio.com/forums/subwoofers/229416-dual-15-reflex-sub-help.html)

maxo 5th February 2013 09:31 PM

dual 15" Reflex Sub help
 
Guys,
i was going to get a pair of these
http://www.fullcompass.com/common/fi...ty%20specs.pdf

at a pawn shop but they wanted 400 for the pair
and since the drivers seems to be in very bad condition i decided to build my own
ported boxed cabinets

what do you suggest, i prefer non trapezoidal as is it harder to do the cuts on the plywood, a rectangular box will be better
any pointers ?

i plan to furnish the box with neodymium drivers
and use 1/2 plywood with internal bracing
to make the box not too heavy
3015LF or 15NDL76 to say some in paralleled to get 4 ohms per cab

Thanks

Inductor 6th February 2013 08:07 AM

EMINENCE KAPPALITE 3015 LF has a better low end in a >135L / 4.8ft³ box (each driver).

mr. doom 6th February 2013 01:59 PM

What amp will you use?
What type of music?
What size of box.

The FatalPro 18" neo is not much more expensive.

jbell 6th February 2013 02:12 PM

If you are going to dual reflex -- think PPSL.

maxo 6th February 2013 06:53 PM

Quote:

Originally Posted by mr. doom (Post 3358354)
What amp will you use?
What type of music?
What size of box.

The FatalPro 18" neo is not much more expensive.

Music is ballad/pop with 2 live singers, keyboards and drum machines
live electric bass sometimes, but mostly 2 singers with arranger keyboard and drum machines

the size of the box , i like the size of that dual 15 from community
so i prefer a dual 15 than a dual 18 ,,, too large
mostly indoor venues
i have 2 peavey pr12 and with the mid highs spl's i am ok
but i lack the low end ompth so thats why i am looking to make a sub
i have a crown XLS drivecore 2000
and dbx driverack PA... at last... Sigh!

maxo 6th February 2013 06:54 PM

Quote:

Originally Posted by jbell (Post 3358364)
If you are going to dual reflex -- think PPSL.

Jbell,
any ponters , i found this
http://www.audioasylum.com/cgi/vt.mpl?f=hug&m=161240

weltersys 6th February 2013 07:39 PM

More information here:

http://www.diyaudio.com/forums/subwo...nclosures.html

maxo 6th February 2013 08:46 PM

Quote:

Originally Posted by weltersys (Post 3358777)

Welter
fact is that i do not want ( and dont have the knowledge ) to sim and test designs
i want something that is already designed and with plans
so i just build and use
any plans that you can link me to for some PPSL tried and good design

weltersys 6th February 2013 08:57 PM

Quote:

Originally Posted by maxo (Post 3358892)
Welter
fact is that i do not want ( and dont have the knowledge ) to sim and test designs
i want something that is already designed and with plans
so i just build and use
any plans that you can link me to for some PPSL tried and good design

DJK's designs in the two links are good.
If you are going to use 1/2", use a lot of bracing.

maxo 6th February 2013 10:48 PM

Quote:

Originally Posted by weltersys (Post 3358903)
DJK's designs in the two links are good.
If you are going to use 1/2", use a lot of bracing.

Welter can you paste the links to the right post
i tried to follow but filtering the info from 34 pages
is not easy


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