Rythmik Audio F12 sealed subwoofer

Specification
* Driver 12" high excursion with custom sensing coil
* Driver materials Black or silver anodized aluminum with rubber surround
* Cast aluminum basket
* Copper flux modulation shorting rings
* Amplifier 370w RMS class A/B patented servo controlled
* Dimensions : 15-3/4"(W) x 15-3/4" (H )x 17"(D) - (18-1/2" D with grille)
* Shipping Weight : 80 lbs
* Frequency Response : 14 - 100 Hz (-2 dB @ 14 Hz)
* Crossover slope : Selectable 12 or 24 dB / octave (PEQ and XLR versions)
* Crossover range (Low pass) : 25 - 100 Hz
* Rumble Filter (High pass ) : 20 Hz 18 dB / octave
* Phase response : 90 degrees phase shift at 20 Hz
* Phase adjustment : 0 - 180 degrees continuously variable
* Bass damping factor settings high (Q=0.5), med (Q=0.7), and low (Q=1.1)
* Finishes Available in Black Oak Vinyl and Matte Black only

Price : RM4,000 (wef 22 July 2013)

More info : http://www.rythmikaudio.com/F12.html