Subwoofer Hertz MP 300 D2.3 PRO - 12" - 600W RMS - 2+2Ω - Mille PRO - V-Cone

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The Sound Auto Concept Team

Highlights

• 12-inch Mille PRO subwoofer for extraordinary performance in a compact volume
• 600W RMS power and 1200W peak power
• Mineral powder-loaded cellulose cone (Legend technology)
• V-cone® profile for maximum rigidity and piston-like operation
• Boundary Free Surround technology for superior radiating surface
• 65 mm 4-layer voice coil on TIL-P former
• 2Ω + 2Ω impedance for maximum versatility
• Optimized ventilation system without bottom plate drilling

Description

Extraordinary performance in a compact volume, this is the challenge of Mille PRO car audio subwoofers. With the solid experience gained with Mille Legend, the R&D team has optimized the production process to offer the "Hertz Sound Experience" to the widest audience, re-employing the technologies and materials of this flagship line.

CONE AND MEMBRANE

The MP 300 D2.3 cone is made of cellulose loaded with mineral powder, the same construction technique as for Legend. The V-cone® profile increases rigidity, allowing the cone to operate like a piston. The surround is made of very pure IIR butyl.

BOUNDARY FREE SURROUND

As with the Legend ML 2000.3 and ML 2500.3, Mille PRO subwoofers use Boundary Free Surround technology, which allows for a larger radiating surface area for the same diameter, resulting in higher sound pressure.

COMPACT BASKET

The compact six-spoke anti-resonant aluminum basket is the same as for ML 2500.3; it contributes to the mechanical damping of the subwoofer by being totally acoustically transparent.

HIGH PERFORMANCE VOICE COIL

The 4-layer voice coil wound on a 65 mm diameter TIL-P former is over 60 mm high to allow for greater excursions. The 2Ω + 2Ω impedance improves versatility by allowing the use of all types of amplifiers.

OPTIMIZED VENTILATION SYSTEM

The ventilation and decompression system avoids the need for drilling in the bottom plate with the following advantages:

• Better thermal inertia for lower operating temperatures on musical transients
• Better magnetic field induction in the coil with the same motor size. Thanks to the high iron content in the pole pieces, the probability of magnetic saturation decreases by making maximum use of the flux density generated by the magnet
• Possibility of installing the subwoofer on the rear wall, taking advantage of its compact dimensions. A damping disc is supplied with the product, allowing it to be attached to the enclosure through the 10 pre-drilled holes

OPTIMIZED COOLING

The orifices around the voice coil and the 10 perforations in the back plate allow for better air exchange with the inside of the windings by forcing air through the air gap to maintain a low operating temperature even during the most extreme musical passages.

PROFESSIONAL CONNECTORS

Connection is made via solid push-in connectors with short-circuit protection, accepting 8 AWG cables for the lowest possible resistance in low impedance (1Ω) configurations.

Technical Specifications

Thiele & Small Parameters

Mounting Dimensions

Why Choose It

• 12-inch Mille PRO subwoofer offering the Hertz Sound Experience to the widest audience
• Flagship Legend line technologies and materials for exceptional performance
• Mineral powder-loaded cellulose cone (same technique as Legend)
• V-cone® profile for maximum rigidity and piston-like operation
• Very pure IIR butyl surround for durability and consistent performance
• Boundary Free Surround technology for superior radiating surface
• Higher sound pressure for the same diameter
• Compact six-spoke anti-resonant aluminum basket (same as ML 2500.3)
• Optimal mechanical damping and total acoustic transparency
• 65 mm diameter 4-layer voice coil on TIL-P former
• Voice coil height over 60 mm for large excursions
• Linear excursion (Xmax) of ±16 mm for significant air displacement
• Mechanical excursion (Xmech) of ±26 mm for extreme performance
• 2Ω + 2Ω impedance for maximum versatility with all amplifiers
• Ventilation system without bottom plate drilling for multiple advantages
• Better thermal inertia for lower temperatures on musical transients
• Better magnetic field induction in the voice coil
• High iron content in pole pieces to prevent magnetic saturation
• Possible to install the subwoofer on the rear wall thanks to its compact dimensions
• Damping disc supplied with 10 threaded holes for attachment to the enclosure
• Orifices around the voice coil for better air exchange
• 10 perforations in the back plate for optimal cooling
• Low operating temperature even during extreme musical passages
• Solid push-in connectors with short-circuit protection
• Accepts 8 AWG cables for minimum resistance in 1Ω configuration
• Resonance frequency (Fs) of 23 Hz for ultra-deep bass
• Qts of 0.48 ideal for sealed and bass-reflex enclosures
• Exceptional sensitivity of 86 dB for maximum efficiency
• Robust 8.63 kg construction guaranteeing maximum durability
• Ultimate solution for extraordinary performance in a compact volume

Documentation

For more technical information and the complete installation manual, consult the official Hertz documentation.