Hertz Mille Pro MPS 300 S2 Sub 12 Inch 30cm Shallow Car Subwoofer 2 Ohm 500w RMS

The Hertz Mille Pro MPS 300 S2 is a 12 inch (300 mm) shallow car subwoofer from the Mille Pro range, rated at 500W RMS (1000W peak) with a single 2 ohm voice coil and a mounting depth of just 88 mm.

This listing is the 2 ohm version. The Mille Pro MPS 300 is also available in 4 ohm (MPS 300 S4). A robust screw-less mesh grille is included.

Key specifications

• Size: 12 inch (300 mm) shallow subwoofer
• Power handling: 500W RMS, 1000W peak
• Impedance: 2 ohm single voice coil
• Mounting depth: 88 mm (3.46 in)
• Enclosure: sealed, from 22.7 L (0.8 cu ft)
• Frequency response: 25 – 400 Hz
• Voice coil: 38 mm six-layer copper
• Xmech: 20 mm
• Frame: die-cast aluminium, grille included

Extreme dynamics, unlimited power handling, realistic sound stage

• Ultra-shallow overall depth of 88 mm
• 500W continuous power handling
• Optimised for extremely compact sealed enclosures from 22.7 L (0.8 cu ft)
• Air Intercooling Revolution (A.I.R.) prevents air-compression-related limitations
• High mechanical excursion (Xmech 20 mm)
• Six-layer copper voice coil (38 mm / 1.5 in) for high thermal capacity
• Non-vented rear design allows reduced enclosure depth
• Robust screw-less mesh grille included with black screws provided
• Die-cast aluminium frame
• Solid horizontal 8AWG spring-loaded terminals
• EID: Scan, Discover, Identify

The MPS 300 S2 is designed to deliver strong performance where installation space is severely limited. It is optimised for ultra-compact sealed enclosures from 22.7 L (0.8 cu ft) — a typical use case is under the rear bench of a pick-up truck, where both space and height are restricted.

The shallow mounting depth is achieved through a dedicated suspension support structure for the spider and coil, which moves the magnetic group inwards. This reduces overall depth while maximising linear cone excursion, giving the MPS 300 S2 an Xmech of 20 mm despite its compact profile.