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Eminence Sigma Pro-18A-2 18" Cast Frame Driver
hi i customize car audio and i was wondering if this speaker was more like a woofer type speaker or a loud Speaker
This speaker is designed for use as a Pro Audio subwoofer, however there is a movement in Car Audio to use high sensitivity drivers such as this.I would recommend a 4.5 cubic foot cabinet with two 4" diameter ports that are 6-3/4" long. This will tune the cabinet to 40 Hz and net you an f3 of 53 Hz. Your f6 should be at about 43 Hz making this a very good subwoofer for music.
Date published: 2013-01-26
I'm building a speaker on a budget - how would you compare this speaker to the Eminence Definimax 4018LF 18" Driver? This speaker is almost 1/2 the price and the reviewers all seem to like them. I will be using 2 18" drivers in the cabinet primarily for bass in a mobile dj/pa rig. (3 way speakers)
There are a few differences, these Sigma Pro's need larger boxes compaired to the Definimax woofers to reach as low (about 40% larger). Also the Definimax has a better motor (Larger VC, Shorting ring, higher xmax), but these should still serve your purpose well.
Date published: 2013-04-17
How big should I build the enclosure?
In the cabinet design pdf is the given enclosure size for both drivers in the "Dual SigmaPro18A Large PA Subwoofer Cabinet" section or is it per driver (11.12cu.ft. for both or per driver)? Also is it 2 ports per side or 1 per driver. Thanks!
The design is for two drivers. Cabinet size 11.12. and two ports as specified.Build the cabinet symetrically - woofer top and bottom, with ports centered left and right.
Date published: 2012-06-27
would these be an acceptable driver in a DIY t18 box? any power limitations? also considering Peavey Low rider 18
The Eminence would be better suited for that application, unfortunately we have no way of modeling that type of enclosure. I would recommend a high pass filter set at about 40 Hz.
Date published: 2013-06-11
Would this perform well in a 1x18 W-Bin design? Some other driver maybe?
This will work OK but you would be farther ahead with the Omega Pro 18 from Eminence for this application. It has a bit more power handling and a stronger cone for horns or scoops.
Date published: 2013-09-09
I have a couple sigma pro 18a 2 speakers but need to know the specs to build my speaker box
I would recommend a box with external dimensions of 22"H x 28"W x 18"D using 3/4" material. A single 6" diameter port that is 9" long will tune the box to 34 Hz.
Date published: 2014-03-24