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Mille Pro MP 70.3
Technical Highlights
- 20 mm coil, 4 ohm impedance, frequency response 180-18k Hz.
- Neodymium magnet, V-cone® profile, boundary free surround.
- Exponential V-diaphragm, high linearity, wide frequency response.
- More technical details
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Mille Pro MP 70.3 by Hertz
Hertz Mille Pro MP 70.3 is a 3-inch (8 cm) midrange speaker with a size of 70 mm and an impedance of 4 Ohms. The design features a symmetrical dual neodymium magnet structure and a 20 mm CCAW dual-layer voice coil on a polyamide former with 8 decompression holes. The V-cone profile with an exponential V-membrane made of pressed cellulose with cotton fibers is geometrically optimized. Boundary Free Surround is integrated. The frequency response ranges from 180–18,000 Hz, sensitivity is 88 dB, Fs is 110 Hz, BL is 2.8 T*m, Le is 0.12 mH, and Re is 3.7 Ohms. The acoustically transparent basket is made of aluminum alloy with a diamond cut and an aluminum Hertz logo, a vibration-damping rubber magnet cover is removable, and a full-protection metal grille with a mineral powder-coated inner grill is included. Peak power handling is 100 W. Weight is 0.17 kg.
- 3-inch midrange speaker (8 cm)
- Symmetrical dual neodymium magnet structure (FEM-developed)
- 20 mm CCAW dual-layer voice coil on polyamide former with 8 decompression holes
- Exponential V-membrane profile/V-cone made of pressed cellulose with cotton fibers
- Boundary Free Surround
- Acoustically transparent basket made of aluminum alloy with diamond cut and aluminum Hertz logo
- Vibration-damping rubber magnet cover, removable
- Full-protection metal grille with aluminum Hertz logo, mineral powder-coated inner grill
- Neodymium magnet
- Weight 0.17 kg
- Size: 70 mm
- Impedance: 4 Ohms
- Frequency response: 180–18,000 Hz
- Sensitivity: 88 dB
- Peak power handling: 100 W
- Power handling note: High-pass filter @ 250 Hz – 12 dB/Oct.
- Voice coil diameter: 20 mm
- Re: 3.7 Ohms
- Fs: 110 Hz
- Le: 0.12 mH
- BL: 2.8 T*m
- Mms: 2.9 g
- Cms: 0.7 mm/N
- Qts: 0.82
- Qes: 1
- Qms: 4.6
- Magnet size (W x T x H): 19.7 x 0 x 2 mm
- Vas: 1
- Physical dimensions: A 87.8 mm; B 73 mm; C 50 mm; D 44 mm; E 93 mm; F 17 mm
- D: 65 mm
- Membrane: Pressed cellulose cone with cotton fibers

