12 in. Woofer

12" loudspeaker of 8 Ohms for reproduction of bass and medium-bass ranges in 2- and 3-way systems.

Recommended Application

• PA Systems
• Sound Reinforcement Enclosures
• Side Fills
• Electric Bass & Electric Guitar

Specifications:

Nominal Diameter.................305(12) mm(in)
Nominal Impedance......................8 Ohms
Power
   Musical Program**.................400 Watts
   Continuous Power (RMS)............200 Watts
Nominal Resonance.....................52 Hz
Sensitivity (1W/1m)...................98 dB SPL
Frequency Response...............55-5000 Hz
Flux Density.................11500(1.15) Gauss(Tesla)
Voice Coil Inductance...............0.45 mH
Voice Coil Diameter.............46(1.81) mm(in)
Displacement in Enclosure.....1.8(0.064) l(cu ft)
Magnet Weight...................1247(44) g(oz)
Magnetic Set Weight...........3240(7.13) g(lb)N
Net Weight....................3940(8.68) g(lb)
THIELE-SMALL PARAMETERS
Fs    Free Air Resonance...........48.04 Hz
Re    DC Coil Resistance............6.27 Ohms
Qms   Mechanical Q Factor..........13.75
Qes   Electrical Q Factor...........0.67
Qts   Total Q Factor................0.63
Vas   Equiv. Vol. of Air.....100.67 l
no%   Reference Efficiency..........2.66 %
Sd    Effective Piston Area..0.0510(79) m�(in�)
Vd    Sd x Xmax..............63.83(3.89) cm�(in�)
Xmax  Excursion...............1.25(0.05) mm(in)
BL    Force Factor.................10.65 Tm

** Specifications for use in musical and 
vocal program, allowing a maximum amplifier 
distortion of 5%.
Due to technological progress, we may insert 
modifications without previous announcement.

Dimensions (mm):

Curves:

Response Curve of the loudspeaker installed in a 65-liter (2.29 ft�) enclosure (VB12PW-1A), drawn in an Anechoic Chamber. Impedance Curve of the loudspeaker in open air.

Project: