• PT
  • EN
  • ES


15-inch Loudspeaker 1200W RMS


Carefully developed to reproduce low frequencies, the THUNDER BASS 3K7 is intended for three-way automotive audio systems, standing out on heavy bass ranges without losing its unique punch to maintain an expressive air propagation. With such mechanical resistance and state-of-the-art technology, this product can offer results that single out strength, performance, power, and high-quality sound. Welcome to our sound world.

Technical information
RMS Power 1,200W
Potência de Programa Musical 2,400W
Maximum Power 3,700W
Nominal Impedance 4 ohms
Resistência Elétrica do Fio da Bobina 2.37 ohms/VCC
NO (Efficiency Referential) 1.474%
Sensitivity (@ 1W, 1 m)-Free-air 93.704dB
Diaphragm Mass 0.4772 lbs (0,216459 kg)
Total Mass 0.5097 lbs (0.231237 kg)
BL Product 21,093 TM
Mechanical Q (Qms) 14.292
Electrical Q (Qes) 0.322
Total Q (Qts) 0.315
Compliance (CMS) 63.258u M/N
Equivalent Volume (VAS) 17.998 gal (68.133 liters)
Frequency Response 40 Hz to 1,500 Hz
Resonance Frequency 41.614 Hz
Le @ 10kHz (Coil Inductance at 10kHz) 0.513 mH
Cone Effective Area (SD) 0.936 Sq.ft (0.087 Sq.m)
Cone Excursion without Distortion (X MAX) -+ 0.496 inches (12.6 mm)
Gap Flux Density 7,650 GAUSS
Nominal Diameter 15 Inches
Ferrite Measures 8.661 x 0.984 inches (220 x 25 mm)
Coil Diameter 4 Inches
Coil Height 1.299 inches (33 mm)
Coil Wire Material Copper
Coil Wire Section Round
Coil Shape *Kapton®
Gap Height 0.610 inches (15.5 mm)
Housing Structure Material Aluminum
Ferrite Material Barium
Weight 29.101 lbs (13.2 kg)
Cabinet Occupied Volume 1.981 gal (7.5 liters)