Hertz MPS 250 S2
$450.00
Mille Pro Series 10″ shallow-mount 2-ohm component subwoofer
When Hertz designed their Mille Pro Series MPS 250 S2 10″ shallow-mount subwoofer, the goal was to bring high-powered bass to even smaller spaces than their previous models. They’ve succeeded. Their advanced design delivers a sub with over 20% greater cone excursion than a standard sub and a mounting depth of only 3.25″. It’ll pound out the lows in a sealed enclosure as small as 0.5 cubic feet.
MPS subs are designed from the bottom up to minimize size while maximizing output. The design’s integrated support for the voice coil and spider structure allows the magnetic components to be moved inwards, resulting in shallower overall depth and cone excursion capacity. A tough polypropylene cone and rugged die-cast aluminum frame supply a solid foundation for the sub’s 500 watts of RMS power handling (1000 watts peak).
Product Highlights
- 10″ 2-ohm shallow-mount subwoofer
- Polypropylene cone with rubber surround
- Die-cast aluminum frame
- Frequency response: 25-400 Hz
- Power handling: 500 watts RMS (1000 watts peak)
- Sensitivity: 82.5 dB
- Top-mount depth: 3.25″
- Mounting height: 1.6″
- Black steel mesh grille included
- Klippel verified for optimized performance
Package Contents
- One 10″ Subwoofer
- Grille (installed)
- Grille removal tool
- Eight 1-3/8″ Allen head screws
- 4mm Allen Head bit
- 8 Speed clips
- Owner’s manual
- Grille removal instructions
- Template on the box lid
Physical Specifications
- Subwoofer Size: 10-inch
- Frame Dimensions: 10.812″ × 10.812″
- Cutout Diameter: 9-3/16″
- Top-mount Depth: 3-1/4″
- Mounting Height: 1.6″
- Voice Coil: Single
- Basket Material: Die-cast aluminum
- Grille: Black steel mesh (included)
Performance Specifications
- Power Handling: 500 watts RMS
- Peak Power Handling: 1000 watts
- Sensitivity: 82.5 dB at 1 watt
- Frequency Response: 25-400 Hz
- Impedance: 2 ohms
- Resonant Frequency (Fs): 28 Hz
- Total Q-Factor (Qts): 0.41
- Equivalent Volume (Vas): 24.5 liters
- Maximum Linear Excursion (Xmax): 16.8mm
Enclosure Recommendations
- Sealed Box:
- Minimum volume: 0.5 cubic feet
- Maximum volume: 0.65 cubic feet
- Recommended crossover: 70-80 Hz (low-pass) with 24 dB/octave slope
- Recommended subsonic filter: 15 Hz with 24 dB/octave slope
- Ported Box:
- Optimum volume: 0.6 cubic feet
- Port specifications: One 3.07″ × 2.51″ × 22.24″ long port
- Recommended crossover: 60-70 Hz (low-pass) with 24 dB/octave slope
- Recommended subsonic filter: 20 Hz with 24 dB/octave slope
Special Features
- Shallow-mount design for installation in limited-depth spaces
- Terminals positioned sideways to minimize overall depth
- Spring post terminals accept pin connectors, single banana plugs, and bare wire up to 8 gauge
- Klippel verified for optimized motor structure, voice coil alignment, and suspension
- Integrated support for voice coil and spider structure
- Over 20% greater cone excursion than standard subwoofers