Hertz Mille Pro MP 300 D2.
3 / D4.
3 is a 12 inch (30 cm) Subwoofer with 600 W RMS and 1200 W Peak.
The impedance is 4+4 Ohm or 2+2 Ohm (DVC) and the voice coil is 65 mm, CCAW, 4-layered and wound on TIL-P material with vent holes.
The construction includes an exponential V-cone, an IIR rubber surround, and a water-repellent, mineral-injected paper diaphragm.
The basket is made of an aluminum alloy with a six-spoke structure and vents under the spider; the terminal block accommodates cables up to 8 AWG and is equipped with a plastic cover.
The drive uses high-density ferrite and a high-performance compact motor; Xmax is 17 mm, Xmech ±27 mm, BL 12 T*m and Le 1.6 mH.
Other specifications: effective diameter 260 mm, Fs 24 Hz, Vas 74 l, Qts 0.42, Qes 0.45, Qms 5.9, SPL 86 dB and weight 8.63 kg.
Recommended enclosures: sealed box with 28 l (Fb 48 Hz, Qtc 0.82) and reflex box with 36 l (Fb 33 Hz); mounting hole 287 mm, wood thickness 19 mm.
Features 12 inch (30 cm) Subwoofer RMS power 600 W Peak power 1200 W Impedance 4+4 Ohm / 2+2 Ohm (DVC) Voice coil 65 mm, CCAW, 4-layered, wound on TIL-P material, with vent holes Exponential V-cone IIR rubber surround Diaphragm water-repellent press paper Diaphragm mineral-injected paper Basket made of aluminum alloy, acoustically transparent, low resonance, six-spoke structure, vents under the spider Terminal block for cables up to 8 AWG, with plastic cover Ergonomic, compact design for closed box enclosures starting from 27 l volume Option for mounting to the box wall High-performance compact motor Magnet high-density ferrite Weight 8.63 kg Technical Specifications Size 300 mm Effective diameter 260 mm Voice coil Ø 65 mm Magnet size (B x T x H) 165 x 75 x 35 mm Xmax 17 mm Xmech ±27 mm Re 1.9 Ohm Fs 24 Hz Le 1.6 mH Vas 74 l Mms 235 g Cms 0.19 mm/N BL 12 T*m Qts 0.42 Qes 0.45 Qms 5.9 SPL 86 dB Physical specifications: A 321 mm, B 287 mm, C 187 mm, D 164 mm, E 327.5 mm, F 59 mm Enclosure data – Sealed Box: Volume 28 l (0.99 cu.
ft.
), Fb 48 Hz, Qtc 0.82, external dimensions B x H x T 450 x 360 x 280 mm, mounting hole 287 mm, wood thickness 19 mm Panel cut – Sealed Box: A 450 x 360 mm (2x), B 450 x 242 mm (2x), C 322 x 242 mm (2x) Enclosure data – Reflex Box: Volume 36 l (1.27 cu.
ft.
), Fb 33 Hz, external dimensions B x H x T 620 x 390 x 330 mm, mounting hole 287 mm, wood thickness 19 mm Panel cut – Reflex Box: A 620 x 390 mm (2x), B 620 x 292 mm (2x), C 352 x 292 mm (2x) Magnet: high-density ferrite Diaphragm: water-repellent press paper