A rigid cast aluminum frame with narrow spokes to minimize reflections back into the cone. In addition, the frame includes force cooling system openings which allows airflow to cool the voice coil. To drive the voice coil, a large ferrite magnet is used with a very precise machined top and bottom plate. The additional dual forced vent in the back plate for the coil allows this driver to handle up to 500 watts RMS without issue.

The voice coil is wound on a 3″ glass fiber with aluminum wire keeping weight to a minimum for incredibly quick transient response. Engineered with 19 mm of winding depth, this inside/outside voice coil provides excellent thermal and mechanical durability.

Technical Details

GENERAL SPECIFICATIONS

Nominal Diameter	12″ (310 mm)
Nominal impedance	8 Ohms
Rated AES Power Handling (RMS)	500 Watts
Program Power	1000 Watts
Sensitivity 2.83V at 1m	97.5 dB
Recommended Hi Pass Crossover** **For Full Power Handling	110 Hz** **12db Per Octave Crossover
Frequency Range	70 – 3,200 Hz
Voice Coil Diameter	3″ (75 mm)
Voice Coil Wire	Aluminum
Voice Coil Winding Depth	19.0 mm
Former Material	Glass Fiber
Magnetic Gap Depth	10.5 mm
Frame Material	Die Cast Aluminum

THIELE-SMALL PARAMETERS

Equivalent Volume	Vas	74.57 l
Excursion (mathematical)***	Xmax	6.87 mm
Free Air Resonance	Fs	52.72 Hz
Mechanical Factor	Qms	13.35
Electrical Factor	Qes	0.38
Total Factor	Qts	0.37
Cone Area	Sd	573 cm²
Mechanical Mass	Mms	55.94 g
Bl Factor	Bl	16.54 Tm
Dc Resistance	Re	5.7 Ohms
Inductance	Le	1.00 mH at 1 kHz
Mechanical Mass Without Air	Mmd	48.19 g
Mechanical Compliance	Cms	0.162 mm/N

***Xmax=(Voice coil winding depth-Magnetic Gap depth)/2+ Mgnetic Gap Depth/4

EXTRA INFO

Overall Diameter	12.48”(317 mm)
Front Mount Baffle Cutout	11.16” (283.5 mm)
Mounting Depth	5.20”(132 mm)
Overall Depth	5.76”(146.5 mm)
Net Weight	16.8 Lbs (7.62 kg)
Shipping Weight	18.51 Lbs (8.40 kg)
Carton Dimensions W x L x H	13.79”x 13.79” x 7.09” (350 x 350 x 180mm)