Hey all. Have a Dr Bass DRB115 that's heavy (58lbs) but loud enough and sounds good. Was wanting to go to something lighter and smaller without losing volume (and perhaps gaining some) I found a used Greenboy Fearful 12/6: 36 lbs, has the alpha6 mid driver, no tweeter. Heard nothing but good about these, and the size, weight, price are right. I wanted to compare the woofers specs of the two but trouble narrowing down which one is my mine in the DRB. It's 4ohm and is an Eminence Kappa, but says nothing beyond that on the speaker body. Was hard to take a decent photo but found one on the 'net <----<< link If it's the kappa 15c (which looks different but is the only 15 4ohm I could find on eminence's site) then I think the relevant specs are: Kappa 15c 15inch 4ohm (link) Power rating: 450 watts RMS Usable Frequency Range 63 Hz - 2.8 kHz Sensitivity* 98.1 dB Peak Diaphragm Displacement Volume (Vd) 206 cc (Of course, those specs for the 15inch may be out to lunch if it's a totally different speaker that what's in my cab) Kappalite 3012LF 12inch 8ohm (link) Power rating: 450 watts RMS Usable Frequency Range 46 Hz - 2 kHz Sensitivity* 95.5 dB Peak Diaphragm Displacement Volume (Vd) 496 cc I'm surprised that the kappalite's sensitivity is only 95.5 dB. Aren't these supposed to put out huge sound? Or is that party due to the greenboy cab design and the dedicated mid? At the end of the day I know they'll be different sounding cabs, but wondering if the 12 inch kappalite will be able to have the same volume at the lower spl but higher displacement. Also the wattage they are being fed will be different at the different ohm ratings: the head being used will either be my d800 (800w @ 4 ohm/400 @ 80hm) or a Berg Forte for reference. What does the peanut gallery have to say? Will the Greenboy be as loud (or more) in a smaller form factor and weight? Anyone able to identify the kappa any better?