M系列的超低音扬声器具有超出想象的性能，非压纸锥和大马达结构以及大低音等出色的科学设计使得M-1204D在同规格的竞争产品中脱颖而出，并因性价比高获得了一大批年轻HIFI爱好者的青睐。
12" Dual 4-Ohm Subwoofer
350 watt RMS/700 Watts Max
Proprietary DDC Coated Non-Pressed Paper Cone
Large Roll Santoprene® Surround
2" Vented BASV Voice Coil Former
Perimeter Aero-Vent Voice Coil Cooling Vents
Non Resonance DDC Coated Stamped Steel Basket
Rubber Mounting Gasket/Trim Ring
Chrome Push Terminals
Optimally Designed for Both Small Sealed or Ported Enclosures
Nominal Impedance: Dual 4-ohm
BL: 9.567
Inputs: Dual Coil
Subwoofer Frequency Range: 29 Hz - 450 Hz
Voice Coil Size: 2 in
Material: Non Pressed Paper
Sensitivity (1W / 1M): 92 dB
Motor Structure: 164 oz
Cutout Diameter: 11 11/16" (297mm)
Mounting Depth: 5.5 in
Xmax: 9.5 mm
Spl: 92 dB
No: 0.26%
Qts: 0.491
Qes: 0.566
Qms: 3.7
Mms: 167 g
Cms: 169.8 uM/N
Vas: 62 Ltr
SD: 490.87 sqCM
Fs: 29.5 Hz
Test Impedance: 1.6-ohms
VC Impedance: 4-ohm + 4-ohm
Size: 12 in
Sensitivity: 92 dB
Frequency Response: 29 Hz - 450 Hz
Voice Coil Size: 2 in
Power Handling (RMS/Peak): 375 / 750 watts