Hertz MPS 250 S2 – 10" Shallow Subwoofer (2-Ohm)
$629.00 AUD
SKU: MPS250S2
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| Size | 10" |
| Power | 500W RMS |
| Year Range | 1998-2013, 2014-2023, 2024+ |
Hertz MPS 250 S2 – Ultra-Shallow 10″ 2-Ohm Subwoofer for Harley Touring
The Hertz MPS 250 S2 is a premium ultra-shallow 10″ subwoofer engineered for riders who want big, controlled bass performance in the smallest possible space. With only 82.6 mm mounting depth, a 2-ohm voice coil, and 500 W RMS power handling, this is the ideal sub for Tour-Paks, saddlebag drop-in boxes, and compact sealed enclosures on Harley-Davidson® Touring bikes.
Who This Is For
- Harley-Davidson Touring riders adding bass where mounting depth is the limit, such as Tour-Paks and saddlebag drop-in boxes.
- Builds using a small sealed enclosure of 12–14 litres rather than a large box that eats your storage space.
- Riders who want stronger low-end that supports the fairing and rear speakers without muddying vocals.
- Systems running a mono amplifier able to deliver at least 300 W RMS, with 400–600 W RMS ideal.
- Not a drop-in on its own: it needs a sealed enclosure, and high-power systems may require upgraded charging or secondary battery support.
Key Features
- Ultra-shallow 82.6 mm design fits where traditional subs cannot.
- 2-ohm single voice coil maximises power from modern motorcycle mono amps.
- 500 W RMS / 1000 W peak for high-output bass performance.
- High-excursion design delivers strong low-end in very small enclosures.
- Optimised for sealed boxes commonly used in motorcycle applications.
- Die-cast aluminium basket for strength in high-vibration environments.
Why It Works on Harleys
- Fits tight spaces like Tour-Paks and saddlebag sub chambers.
- 2-ohm design pairs perfectly with strong motorcycle mono amps (e.g., Hertz SP1.900).
- Small sealed box performance gives real bass without sacrificing all your storage space.
- Strong low-end extension supports fairing and rear speakers without muddying vocals.
Recommended Power & Setup
- Amplifier Power: 400–600 W RMS ideal
- Minimum: 300 W RMS
- Enclosure Type: Sealed
- Sealed Volume: 12–14 litres (0.42–0.49 cu ft). Hertz's published reference enclosure is sealed 14.2 litres (0.5 cu ft) with a system resonance (Fc) of 47.7 Hz and Qtc 0.68.
- Low-Pass Filter: 80–120 Hz @ 12–24 dB/octave
- Electrical Note: High-power systems may require upgraded charging or secondary battery support.
Fitment
- Perfect for Harley-Davidson Touring subwoofer builds
- Ideal in Tour-Pak sub boxes
- Works with many shallow saddlebag drop-in sub enclosures
- Suitable for custom sealed pods where depth is limited
Specifications
| Subwoofer Size | 10″ |
| Impedance | 2 Ω (Single Voice Coil) |
| RMS Power | 500 W |
| Peak Power | 1000 W |
| Sensitivity | 82.5 dB SPL |
| Frequency Response | 25–400 Hz |
| Resonant Frequency (Fs) | 28 Hz |
| Xmax | 16.8 mm |
| Mechanical Excursion (Xmech) | 20 mm |
| Cone Material | Polypropylene |
| Voice Coil | 38 mm (1.5″), six-layer copper |
| Magnet | High-density flux ferrite, 134 × 55 × 36 mm |
| Mounting Depth | 82.6 mm (3.25″) |
| Overall Height | 103.2 mm (4.06″) |
| Recommended Sealed Volume | 12–14 L (0.42–0.49 cu ft) |
| Hertz Reference Enclosure | Sealed 14.2 L (0.5 cu ft), Fc 47.7 Hz, Qtc 0.68 |
| Weight | 5.1 kg (11.27 lbs) |
| Grilles Included | Yes – Hertz lists a screw-less mesh grille with black screws in the feature list. Please confirm pack contents with MAA if in doubt. |
| Re | 2.2 Ω |
| Le | 2.67 mH |
| Vas | 24.5 L |
| Mms | 250 g |
| Cms | 0.13 mm/N |
| BL | 14.7 T·m |
| Qts | 0.41 |
| Qms | 5.3 |
Specifications per Hertz published technical documentation.
Need Box Design Advice?
The MPS 250 S2 performs best in small, well-sealed enclosures. We can help you choose or design the right Tour-Pak or saddlebag sub mounts to maximise output and maintain storage space.
Related collections
This part is listed in: All 2014–2023 Touring Audio · Subwoofers & Enclosures · Hertz – Subwoofers · Saddlebag Speakers
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