Here are the specs:
* 12"
* 175w RMS (600-800 watts peak)
* Dual 4 ohm voice coil
* Engineered with new magnet covers that aid in cooling the voice coils while protecting the magnet
* Flat wound voice coils
* Mounting Depth - 5.5"
* Mounting Hole Diameter - 10.875"
* Overall Diameter - 12.25"
* Bolt Hole Circle - 11.75"
* Motor Width - 4.875"
* Motor Depth - 1.5"
* Basket Depth - 4"
* Displacement - 0.10 cu. ft.
* Weight - 7 lbs.
* Mica Filled Poly Cone
* Santoprene Rubber Surround
* Pressed Steel Basket
* High Temp 8-layer Copper Voice Coil• FEA Optimized Motor Structure
* Single Magnet
* Linear Conex Spiders
* Foam Gasket
* T/S Parameters:
* Electrical Q Value -Qes: 0.42
* Mechanical Q Value -Qms: 4.27
* Total Speaker Q Value -Qts: 0.38
* Free Air Resonance -Fs: 20.0 Hz
* Equivalent Compliance -Vas: 182 liters
* One-Way, Linear Excursion -Xmax: 12 mm
* Efficiency -SPL 1W/1m: 87.3 dB SPL
* Effective Piston Area -Sd: 500 cm^2
* DC Resistance -Re: 3.2 ohm
* Nominal Impedance -Znom: Dual 4 ohm
* Thermal Power Handling -Pe: 175 W
* Force Factor -Bl: 15.4
Enclosures:
* Sealed: 0.50 cuft compact - 2.0 cuft optimal
* ported: 1.25 cuft @35Hz - 1.5 cuft @35Hz