When Hertz designed their Mille Pro Series MPS 250 S4 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. 

Built thin to win

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). You'll get all the bass you're looking for in a package that fits into smaller spaces.

Product highlights:

  • 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: 82.5 dB
  • top-mount depth: 3.25"
  • mounting height: 0.81"
  • sealed box volume: 0.5 cubic feet
  • ported box volume: 0.7 cubic feet
  • grille included

Return for Refund


  • All returns must be new, unused and/ or unopened in original serial number matching packaging including screws, hardware, knobs, plastic coverings, protective films, serial numbers, tags, stickers, and other manufacturer labels not removed or tampered with etc. A 20% restocking fee may be deducted from return refunds. Returned merchandise that is either opened, used or missing items will be issued up to a 50% partial refund.  
  • The retail box cannot be used as a shipping box.
  • Serial numbers must match serial numbers shipped along with matching serial number packaging, merchandise is photographed with serial number per purchase and recorded for our records, items returned back to us that were not purchased from us will not be refunded or warrantied.
  • A traceable and insured shipping method is strongly recommended,  we are not responsible for merchandise that has not reached our facility.
  • Speakers, Tweeters, and Subwoofers with burnt/ frozen coils are not warrantied
  • Amplifiers that are returned and deemed defective from improper installation or use are not warrantied
  • Shipping & handling charges are non-refundable. All refunds will be computed based on the unit cost. Products purchased with “Free Shipping” will have the UPS or USPS Rate deducted from their refund.