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VO-M406-S4
Technical Highlights
- RMS power: 250 watts, impedance: 4Ω, for powerful sound.
- Frequency range: 80–15,000 Hz, Xmax: 5 mm, versatile use.
- Resonance frequency: 125 Hz, dBSPL: 96 dB, for high sensitivity.
- More technical details
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VO-M406-S4 by DD Audio
The VO-M406-S4 from DD Audio is a 6.5 inch (16.5 cm) midbass speaker with an RMS power of 250 watts and an impedance of 4 ohms. The frequency range extends from 80 to 15,000 Hz with a resonance frequency of 125 Hz. The model has a sensitivity of 96 dB. The mounting depth is 85 mm and the mounting diameter is 149 mm. The technical features include a 2 inch voice coil (VCD).
- 6.5 inch (16.5 cm) midbass speaker
- RMS power: 250 watts
- Impedance: 4 ohms
- Frequency range: 80 – 15,000 Hz
- Sensitivity: 96 dB
- Mounting diameter: 149 mm
- Mounting depth: 85 mm
- Xmax: 5 mm
- Resonance frequency (Fs): 125 Hz
- Voice coil diameter (VCD): 50.8 mm
- Qms: 8.53
- Qes: 0.9
- Qts: 0.81
- Vas: 3.56 liters
- Magnetic flux (BL): 7.5 TM

