Hertz MPS250S2-1 10" 2-Ohm Shallow Subwoofer

The Hertz MPS250S2-1 is a 10-inch shallow-mount car subwoofer designed for systems where enclosure depth is limited. Its compact mounting depth helps make low-frequency upgrades practical in locations such as under-seat and behind-seat installations. It uses a single 2-ohm voice coil for straightforward amplifier matching.

This subwoofer is intended for listeners who want meaningful bass output without dedicating a large amount of vehicle space to a conventional deep enclosure. Hertz specifies it for ultra-compact sealed enclosures starting at 14.2 liters (0.5 cu. ft.). A reflex enclosure design is also provided for installations with more available space.

With 500 watts continuous power handling and 1,000 watts peak power handling, the MPS250S2-1 is built for a properly matched external amplifier. Its 25-400 Hz frequency response and 28 Hz free-air resonance support use as the bass foundation in a full-range car audio system. The recommended sealed enclosure alignment is designed for controlled, accurate bass reproduction.

Its shallow design uses a dedicated suspension structure that moves the magnetic assembly inward while preserving cone travel. The driver has 16.8 mm of Xmax and 20 mm of mechanical excursion, helping it maintain controlled movement in a compact form factor. Hertz also uses its Air Intercooling Revolution design to reduce internal air compression and assist voice-coil cooling.

The MPS250S2-1 can be paired with a 2-ohm-stable mono amplifier and an appropriate low-pass crossover for a focused bass upgrade. Its 8 AWG push terminals simplify connection with substantial speaker cable. The included metal grille and compact driver profile make it well suited to visible or space-conscious custom installations.

Key Features

• 10-Inch Shallow Profile: Fits installations with limited enclosure depth.
• 500W RMS Handling: Supports substantial amplifier power with proper setup.
• Single 2-Ohm Voice Coil: Enables direct matching to compatible mono amplifiers.
• 16.8 mm Xmax: Provides controlled linear cone travel.
• A.I.R. Cooling Design: Helps reduce air-compression effects inside the motor.
• Included Metal Grille: Adds protection and a finished installation appearance.

Design & Installation

The MPS250S2-1 uses a polypropylene cone, high-density-flux ferrite magnet, and a 38 mm six-layer copper voice coil. Its die-cast aluminum construction is paired with a full-metal grille assembly using a cast aluminum ring and black steel mesh. The non-vented rear design helps reduce required enclosure depth.

Confirm the 231.6 mm mounting cutout and 82.6 mm mounting depth before building or selecting an enclosure. For a sealed installation, Hertz specifies 14.2 liters (0.5 cu. ft.); for its reflex alignment, it specifies 17 liters (0.6 cu. ft.) tuned to 35 Hz. Use an amplifier stable at 2 ohms, set a suitable low-pass filter, and observe the enclosure and wiring requirements for the installation.