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

Because two drivers in a shared sealed volume interact acoustically. Each driver's compression phase becomes the pressure environment the other driver is working against, which smears transient response and blurs the alignment each would have on its own. A full-height bonded 3/4 inch MDF divider eliminates that completely. Each RS-W10 gets its own 0.50 cubic feet net, its own polyfill, and produces its own clean sealed alignment. Separate chambers are the standing design rule on every Proline X dual sealed enclosure.

Two reasons, and both come from the driver. First, Alpine's neodymium motor displaces just 0.04 cubic feet per driver, so almost all of the cabinet volume is usable air rather than being consumed by magnet structure. Second, the RS-W10 only needs 0.50 cubic feet net per chamber to hit Alpine's own recommended alignment. A ferrite shallow 10 that wants 0.80 per chamber and displaces twice as much produces a considerably taller cabinet for the same footprint.

Acoustically identical per driver, roughly 6 dB more maximum output. Both give each RS-W10 exactly 0.50 cubic feet net and the same 32 Hz published F3. The difference is physical: both share the 30 by 15 inch footprint, but the single stands 4.75 inches tall and the dual stands 7.4375. If your vertical clearance allows the extra 2.6875 inches, the dual doubles your cone area and power handling with no change in character.

The enclosure uses one side-mounted Proline X terminal cup with a single pair of posts, pre-wired in 12 gauge OFC to both driver positions in parallel. You do not wire the two chambers separately at the amplifier.

Final impedance is set at the drivers. Each RS-W10 is a dual voice coil subwoofer, available in 2 ohm or 4 ohm versions, so you choose how to wire the two coils on each driver and that determines the load the amplifier sees through the cup. Wire both drivers identically, since mismatched wiring between chambers will split power unevenly. Alpine's application guide ships with the drivers and diagrams every configuration.

Side mounted, and there is one cup serving both chambers rather than one per chamber. 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 both baffles face 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 cargo deck, 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 both chambers airtight under sustained pressure cycling. The chamber divider is a full-height bonded 3/4 inch panel. Front baffles are double-layer at 1.5 inches, two bonded 3/4 inch sheets, at both driver positions. Perimeter cross-bracing and pre-installed polyfill in each chamber complete the build. Assembled and inspected in Tullahoma, Tennessee.

No. This listing is for the enclosure only. Bring your own pair of Alpine RS-W10D2 or RS-W10D4 subwoofers. The cutouts and mounting depth are direct fit at both driver positions for either version.