Performance Optimized Down Fire Sealed 10" Enclosure | Alpine RSW10 Single 10" Sealed enclosure

The neodymium motor. Most shallow subwoofers use a ferrite magnet, which is a large slug of material sitting behind the cone that both occupies internal volume and adds to the driver's overall depth. The Alpine RS-W10 uses a high-grade neodymium magnet instead, which delivers the same motor force from a far smaller structure. Alpine publishes a displacement of just 0.04 cubic feet for this driver, less than half what a typical 10 inch shallow displaces. Almost all of the cabinet volume is usable air, so a 0.50 cubic foot net enclosure fits inside a 4.75 inch tall box.

Because height is the whole point of this cabinet. 0.50 net is Alpine's own small-volume sealed recommendation and they publish an F3 of 32 Hz there. Going larger does help: Alpine lists 30 Hz at 0.75 net and 28 Hz at 1.00 net. But each step up adds cabinet height, and this enclosure exists to fit under seats where nothing else in the line will go. If your install has room for a 1.0 cubic foot box, you likely have room for a conventional subwoofer rather than a shallow one.

Both fit this cabinet identically and both carry the same 600 watt RMS rating, 20mm Xmax and neodymium motor. The difference is the load they present to your amplifier. The RS-W10D2 has dual 2 ohm coils, giving a 1 ohm load in parallel or 4 ohms in series. The RS-W10D4 has dual 4 ohm coils, giving 2 ohms in parallel or 8 ohms in series. Choose whichever produces a load your amplifier is stable and efficient at. Alpine's application guide ships with the driver and diagrams every option.

20mm of one-way linear excursion and 54mm of peak-to-peak mechanical travel. That is a genuinely high figure for a shallow-mount 10, where many competing drivers offer half as much. Alpine pairs it with their DD Linear dual magnetic gap, which is designed to keep distortion low while the cone is operating out at those excursion levels rather than only near rest.

Side mounted. Every Proline X Performance Optimized enclosure uses a side mounted terminal cup regardless of alignment, whether standard, wedge, or down fire. On this cabinet that keeps the connection fully accessible with the enclosure in its installed position, since the baffle faces the floor. The cup is our Proline X ABS and carbon fiber composite unit, recessed, with stainless hardware, copper ring terminals, and pre-wired 12 gauge OFC.

Down Fire cabinets are built with square corners as a series standard. The 3 inch top down corner radius used on other Proline X alignments does not apply here. A down fire box is a low, wide platform that sits flat against a floor or under a seat, and square corners maximize usable internal volume for a given footprint while keeping the cabinet stable on its mounting surface.

V-groove and dado joinery, CNC-cut on ShopSabre routers from Langboard Elite MDF. Every panel joint is a machined interlocking groove that mechanically locks the panels before adhesive is applied, which is what keeps the cabinet airtight under sustained pressure cycling. The front baffle is a double layer at 1.5 inches, two bonded 3/4 inch sheets. That matters especially on a cabinet only 4.75 inches tall, where short panel spans leave little room for bracing geometry and the baffle carries more of the structural load. Perimeter cross-bracing and pre-installed polyfill complete the build. Assembled and inspected in Tullahoma, Tennessee.

No. This listing is for the enclosure only. Bring your own Alpine RS-W10D2 or RS-W10D4. The cutout and mounting depth are direct fit for either version.