Cross-section view of a car audio subwoofer showcasing internal components like the voice coil, magnet, and diaphragm.
Black Hertz subwoofer speaker on a white background.
Close-up of a round black car speaker with a mesh grille and the brand name "Hertz" on the front.
Car audio speaker subwoofer with metal frame and yellow components, labeled Hertz Mille Pro.
Hertz logo with stylized orange wave over the letter 'H' on a black background.

Mille Pro Series shallow-mount component subwoofer

HERTZ MPS 250 S4 4Ω

10” CA$389.99

    • 10" 4-ohm shallow-mount subwoofer

    • polypropylene cone

    • die-cast aluminum frame

    • frequency response: 25-400 Hz

    • power handling: 500 watts RMS (1000 watts peak)

    • sensitivity: 83.5 dB

    • top-mount depth: 3.25"

    • mounting height: 1.6"

    • sealed box volume: 0.5-0.65 cubic feet

    • ported box volume: 0.7 cubic feet

    • grille included

    • Size: 10-inch

    • Impedance (Ohms): 4

    • Cone Material: Polypropylene

    • Surround Material: Rubber

    • Basket Material: Die-Cast Aluminum

    • Grille: Black steel mesh

    • Free-Air: No

    • Dual Voice Coil: No

    • Sensitivity: 83.5 dB at 1 watt

    • Frequency Response: 25 - 400 Hz

    • Max RMS Power Handling: 500 watts

    • Peak Power Handling: 1000 watts

    • Top Mount Depth: 3 1/4 inches

    • Bottom Mount Depth: N/A

    • Cutout Diameter or Length: 9 3/16 inches

    • Frame Width: 10.812 inches

    • Frame Length: 10.812 inches

    • Vas: 21.2 liters

    • Fs: 29 Hz

    • Qts: 0.48

    • Xmax: 16.8 mm

    • 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 (English/ Spanish/ French/ German/ Italian/ Portuguese/ 28 Others)

    • Grille removal instructions

    • Template on the box lid