H84X - 8" 800 Watts RMS Dual 4 Ohm 2.5" V.C. Subwoofer
 
Features:
Heavy Duty, Rugged Industrial Textured Cast Aluminum Basket
120oz High Energy Double Stack Strontium Magnet Structure
Dual Impedance Black Anodized Voice Coil Former with Kevlar Spunlace
Kevlar Fiber Reinforced Non-Pressed Paper Cone with Industrial Textured Finish
Red Stitched Edge to the Cone’s Edge for Added Strength
Over Sized Mirror Image Dual Poly / Nomex Spiders
Black Anodized One Piece Pole-Plate for Added Motor Force
Heavy Duty Direct Input Wires Connection to Voice Coils
Reinforced Fiberglass Woven Dust cap for High Power Applications
Custom Tooled Rubber Gasket and Magnet Boot
Specifications:
Size: 8"
Peak Watts: 1400
RMS Watts: 800
Cone: Non-Pressed Paper
Voice Coil: 2.5" Dual 4 Ohm
Surround: Tall and Narrow Foam
Magnet: 120oz Strontium
Terminals: Heavy Duty Direct Input Wires Connection
Basket: Cast Aluminum
Tinsel Leads: Heavy Duty Triple
Thiele & Small Parameters:  (T/S Parameters on the website supersede user manual specifications)
X-Max: 14mm
SPL: 86dB
Fs: 49.96 Hz
Re: 6.4 Ohms
Le: 0.931 mH
BL: 23.2 Tm
Qms: 5.687
Qes: 0.758
Qts: 0.669
Vas: 3.255L
Cms: 50 um/N
Mms: 203g
Sd: 0.0214 sq cm
Vd: 0.3L
Recommended:
Ported Box: 19.6" H x 11" D x 9.9" W (Round Port 2.5" x 2.22") Internal
Sealed Box: 1.08 ft3 Internal