Radian Audio Coaxial Speakers - Radian 12" coaxial speakers. Radian 512/2B coaxial speaker - Radian 512/2B coaxial speaker handles 300 watts RMS. Radian 512/2B 12" coaxial driver is available here. Radian coaxial speakers.

WORKS EXCELLENT AS A CEILING SPEAKER OR IN A STAGE MONITOR!
	RADIAN 512/2B
	No Longer Available
COAXIAL MODEL - 512/2B
Specifications
Impedance (LF/HF)	8 ohms / 8 ohms
RMS Power Rating	300 Watts
Sensitivity (1W/1m)	94dB SPL
Frequency Response	40Hz - 20kHz
Recommended Crossover	1.25kHz
Voice Coil Diameter(LF/HF)	3.0" / 1.75"
Nominal Dispersion	120°
Net Weight	14.25 lbs. / 6.46 kg.
Mounting Information
Overall Diameter	12.25" / 311.15mm
Bolt Circle Diameter	11.75" / 298.45mm
Baffle Cutout Diameter	11.25" / 285.75mm
Overall Depth	6.55" / 165.1mm
Materials
Woofer Cone	Reinforced Paper
HF Diaphragm	Aluminum
Basket	Stamped Steel
Input Connectors (HF)	.25" / 6.35mm Terminals
Input Connectors (LF)	.205" / 4.75mm Terminals
Thiele-Small Parameters
Resonant Frequency (Fs)	45.1 Hz
Impedance (Re)	6.1 ohms
Total Q (Qts)	.482
Mechanical Q (Qms)	3.4608
Electrical Factor(Qes)	.5668
Comp. Equivelant Vol. (Vas)	108.02 Liters
Voice Coil Overhang (Xmax)	.89
Surface Area of Cone (Sd)m2	.08208 m2
SPL vs. Frequency

Dimensional Drawing