VIBE BLACKDEATH dual 1 ohm 15" High Excursion Subwoofer with Triple Stacked Magnets.

HEX stands for High Excursion. These woofers come in 5000w RMS models in 12, 15 and 18" variants with enormous 220mm, 250mm and 280mm diameter magnets to deliver ground shaking bass. 4" voice coils with a 75mm winding height allow the woofer to remain in total control electrically while moving on its 2 way linear movement of 70mm. Huge excursion and xmax means the woofer moves huge amounts of air delivering incredible bass and huge air pressure. The 10" nomex spider keeps definitive control. Beautifully designed and ultra menacing.

Specifications:

• 15000w Peak 5000w RMS
• Impedance: Dual 1 ohm
• Sensitivity: 89 dB
• Frequency response: 15Hz - 850Hz
• 4" 8 layer voice coil
• Mounting depth: 11.8" (300mm)
• Mounting diameter: 14.7" (375mm)
• Enclosure volume: 3 - infinite cubic feet
• Fs : 28.35Hz
• Vas : 43.33L
• Re : 1.8Ω
• QMS : 5.43
• QES : 0.26
• QTS : 0.256
• BL : 27.67Tm
• SPL : 87.67dB
• SD : 0.075m/2
• CMS : 0.054mm/N
• MMS : 578.3g
• RMS : 9.3ΩM
• RES : 40.4 RP
• Zmax : 42.4
• Nref : 0.35%  

BlackDeath Competition Subwoofer Manual: 

*Sold as one single speaker. Purchase 2 to make a pair.