Hertz Mille Pro MP 250 D2.3 / D4.3 - 10-inch Subwoofer with High Control and Performance
The Hertz Mille Pro MP 250 D2.3 / D4.3 is a 10-inch subwoofer for compact enclosures, combining robust mechanics with high thermal capacity. The cone is manufactured using the same process as the Mille Legend series and utilizes Boundary Free Surround technology for increased cone area with the same outer diameter. The low-resonance aluminum basket, a powerful ferrite motor, and a 65mm CCAW voice coil ensure reliable excursion and clean deep bass - ideal for precise, powerful everyday setups.
You can get the MP 250 at Carhifi.shop in two DVC variants: 2+2 Ohm (D2.3) or 4+4 Ohm (D4.3) - suitable for your amplifier setup.
Technical Highlights
- Dual Voice Coil optionally 2+2 Ohm or 4+4 Ohm â flexible for various amplifiers
- 65 mm (2.56 inch) 4-layer CCAW voice coil on TIL-P former with ventilation for efficient cooling
- Boundary Free IIR rubber surround for higher sound pressure with compact external dimensions
- Mineral-reinforced paper cone (pressed pulp) for stiffness and damping
- Torsion-resistant, non-resonant aluminum basket with integrated ventilation
- Solid terminal for cables up to 8 AWG, with cover against short circuits
- Compact, powerful ferrite motor with high flux density
Technical Data
- Size: 250 mm (10 inches)
- Power Handling RMS: 600 W
- Power Handling Peak: 1200 W
- Impedance: 2+2 Ohm (D2.3) or 4+4 Ohm (D4.3)
- Voice Coil: Ă 65 mm (2.56 inches), 4-layer
- Magnet: High-density ferrite, size 165 x 75 x 35 mm
- Weight: 8.2 kg
- Cone: Pressed, mineral-filled paper cone
- Xmech: ±27 mm
Electro-acoustic Specifications
- Effective Diameter (D): 213 mm
- Xmax (linear): 17.0 mm
- Re: 0.85 Ohm
- Fs: 30 Hz
- Le: 0.65 mH
- Vas: 25 l
- Mms: 182 g
- Cms: 0.14 mm/N
- BL: 7.1 T·m
- Qts: 0.54 | Qes: 0.60 | Qms: 5.92
- Sensitivity: 83.5 dB
Dimensions
Physical measurements according to dimensioned drawing:
- A: 268 mm | B: 236 mm | C: 160 mm | D: 141 mm | E: 274 mm | F: 58.5 mm
- Mounting Cutout (M): 236 mm
Installation & Enclosure
The MP 250 D2.3 / D4.3 is designed for small enclosures and performs with control in sealed enclosures, and with more output in bass reflex.
Sealed
- Net Volume (Vb): 17 l (0.60 cu.ft.)
- System Resonance (Fb): 50 Hz
- Qtc: 0.85
- Recommended External Dimensions (W x H x D): 450 x 350 x 190 mm
- Mounting Cutout: 236 mm
- Material Thickness: 19 mm
Panel Cuts (Quantity):
- A: 450 x 350 mm (2x)
- B: 450 x 152 mm (2x)
- C: 312 x 152 mm (2x)
Bass Reflex
- Net Volume (Vb): 22 l (0.78 cu.ft.)
- Tuning (Fb): 38 Hz
- Recommended External Dimensions (W x H x D): 534 x 330 x 276 mm
- Mounting Cutout: 236 mm
- Material Thickness: 19 mm
Panel Cuts (Quantity):
- A: 534 x 330 mm (2x)
- B: 534 x 238 mm (2x)
- C: 292 x 238 mm (2x)
Practical Tip
Choose the DVC variant to match your amplifier: 2+2 Ohm for low total impedances and maximum power output, 4+4 Ohm for flexible wiring or multiple subwoofers. Proper enclosure damping and sufficient cable cross-section (up to 8 AWG at the terminal) ensure consistent performance.
