Hertz MPS 250 S4 is a 10" Mille PRO shallow-mount subwoofer engineered for high output and strong low-end performance when depth is limited. It’s built specifically for ultra-tight installations (under-seat/under-bench truck enclosures, shallow prefab boxes, and space-restricted custom builds) while still delivering serious cone travel and clean bass. Optimized for ultra-compact sealed enclosures starting at 14 L (0.49 cu ft), the MPS 250 S4 achieves a depth/performance ratio that traditional shallow subs struggle to match. Its suspension group uses a dedicated support structure for the spider and coil, allowing the motor assembly to sit farther inward—reducing overall depth while maximizing linear excursion. The result is a compact sub with excursion capacity claimed to be ~20% higher than conventional designs in this footprint. Key Performance Features Shallow 10" subwoofer designed for tight-depth enclosures Ultra-compact sealed box capable: from 14 L (0.49 cu ft) High excursion design: suspension/motor architecture optimized for linear travel Single 4Ω voice coil (SVC) for straightforward amplifier matching Polypropylene cone for durability and consistent response High density flux ferrite motor Enclosure & Fitment Notes Recommended alignment: sealed Minimum sealed volume: 14 L (0.49 cu ft) Install depth: 82.6 mm (3.25") Ideal for under-seat / under-bench pickup truck sub boxes and shallow custom enclosures Technical Specifications Size: 250 mm (10") Power Handling (Continuous): 500 W Power Handling (Peak): 1000 W Impedance: 4 Ω Voice Coil: Single Voice Coil Ø: 38 mm (1.5") Frequency Response: 25 – 400 Hz Magnet: High density flux ferrite Cone: Polypropylene Install Depth: 82.6 mm (3.25") Magnet Size (D x d x h): 134 x 55 x 36 mm (6.28 x 2.17 x 1.42 in.) Xmech: 20 mm (0.79") Weight: 5.11 kg (11.27 lb) Physical Dimensions A: 274.5 mm (10.81") B: 231.6 mm (9.12") C: 103.2 mm (4.06") D (Depth): 82.6 mm (3.25") E: 244.6 mm (9.63") F: 38.9 mm (1.53") Buyer Use Cases Pickup truck under-seat / under-bench subwoofer enclosures Space-limited SUVs and cargo areas where depth is the limiting factor Sealed SQ/SPL hybrid builds needing compact enclosure volume What’s Included (1) Hertz MPS 250 S4 10" shallow subwoofer Manufacturer documentation Why Buy From MCOR Automotive Shallow sub enclosure + amp matching support Real-world install guidance (box volume, power, and tuning recommendations) Fast fulfillment with knowledgeable audio specialists Physical Specs A 274,5 10.81 B 231,6 9.12 C 103,2 4.06 D 82,6 3.25 E 244,6 9.63 F 38,9 1.53 Frequency response Fitment, Installation & Warranty Notes Fitment Help: Need help confirming fitment, compatibility, amplifier matching, or installation parts? Use our Fit Guide or contact us through the chat button before ordering. Authorized Retailer: MCOR Automotive is an authorized Hertz retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.
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