Performance Optimized Down Fire Sealed Dual 10" Enclosure | Arc Audio SW10 Dual 10" Sealed enclosure

Two reasons. First, the Arc Audio SW10 mounts in just 2.4 inches, the shallowest driver in the Proline X Down Fire program, so the driver itself consumes very little of the cabinet height. Second, Arc's optimum sealed volume for this driver is only 0.6 cubic feet gross per chamber, which is modest. Combine a shallow driver with a small target volume and a dual chamber cabinet lands at 8 inches, only about 3 inches taller than the single-driver version.

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 SW10 gets its own 0.601 cubic feet gross, its own polyfill, and produces its own clean sealed alignment. Separate chambers are the standing design rule on every Proline X dual sealed enclosure.

Acoustically identical per driver, roughly 6 dB more maximum output. Both give each SW10 Arc's optimum 0.6 cubic feet gross and land at Qtc 0.845 with F3 at 45.9 Hz. The difference is physical: both share the 30 by 15 inch footprint, but the single stands 5.0625 inches tall and the dual stands 8. The dual doubles cone area to 676 cm² and combined power handling to 700 watts RMS 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 SW10 is a dual voice coil subwoofer, available in dual 2 ohm or dual 4 ohm, 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. Arc publishes Thiele-Small data for both series and parallel wiring and the two are nearly identical, so the enclosure alignment is correct either way.

Because Arc Audio publishes their sealed enclosure recommendations as gross volume rather than net, which is unusual. Most manufacturers state net volume, meaning the airspace remaining after the driver's displacement is subtracted. Arc states total internal volume before displacement. We built each chamber to 0.601 cubic feet gross to match Arc's published 0.6 gross optimum, roughly 0.55 net per chamber. Both figures appear in the specifications so you can compare against either convention.

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.

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 Arc Audio SW10 subwoofers in either dual 2 ohm or dual 4 ohm. The cutouts and mounting depth are direct fit at both driver positions for either version.