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HMS 12 B4-LD-W
Technical Highlights
- Continuous power handling of 500 W, impedance of 4 ohms, without housing.
- Designed for free air, voice coil size of 65.5 mm, 12".
- High sound pressure, Xmax of 19 mm, impressive 1000 W peak.
- More technical details
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HMS 12 B4-LD-W by Hertz
HMS 12 B4-LD-W is a 12 inches (30 cm) Subwoofer from Hertz for Free-Air applications in the marine sector. The subwoofer has a rated power of 500 W RMS and 1000 W Peak at 4 Ohm impedance with a single voice coil. The diaphragm is made of polypropylene with UV inhibitors, the magnet is made of high-density ferrite, and the voice coil has a diameter of 65.5 mm. Xmax is 19 mm, the diameter is 300 mm, the depth is 191 mm, and the weight is 7.6 kg. The classic grille integrates color-adjustable LEDs. Electroacoustic parameters include Fs 30 Hz, Qts 1.0, Qes 1.1, Qms 11.1, BL 8 T·m, Le 0.41 mH, Re 1.8 Ohm, Vas 95.4 l, SPL 89.5 dB, as well as Mms 114 g and Cms 0.225 mm/N. The magnet size is 156 x 80 x 40 mm.
- 12 inches (30 cm) Subwoofer
- Marine Subwoofer
- Free-Air design
- 500 W RMS
- 1000 W Peak
- 4 Ohm impedance
- Single voice coil
- Diaphragm: Polypropylene with UV inhibitors
- Magnet: High-density ferrite
- Voice coil Ø 65.5 mm
- Classic grille with integrated, color-adjustable LEDs
- Depth 191 mm
- Weight 7.6 kg
- Size: 300 mm (12 inches)
- Sound pressure level (SPL): 89.5 dB
- Resonant frequency (Fs): 30 Hz
- Xmax: 19 mm
- DC resistance (Re): 1.8 Ohm
- Inductance (Le): 0.41 mH
- Vas: 95.4 l
- Moving mass (Mms): 114 g
- Compliance (Cms): 0.225 mm/N
- BL: 8 T·m
- Qts: 1.0
- Qes: 1.1
- Qms: 11.1
- Voice coil Ø: 65.5 mm
- Magnet size (W x D x H): 156 x 80 x 40 mm
- A: 342.9 mm
- B: 279.4 mm
- C: 192.8 mm
- D: 140.6 mm
- F: 52.2 mm

