Professional Series Ported Dual 12" Enclosure | Arc Audio ARC 12

Both drivers share one chamber and one port rather than sitting in separate boxes, so the pair works against the whole volume and the port is sized for the pair rather than doubled. The port carries 43.5 square inches of area at 24.0 Hz, and the design power for the velocity and excursion checks is 840 W for the pair. Passband ripple holds at 0.43 dB across the tuning, with F3 at 25.0 Hz. Tuning is chosen for in-car response rather than an anechoic curve: a vehicle adds roughly 12 dB per octave below about 45 Hz, and this tuning is where that sum comes out flattest across 25 to 60 Hz.

A single ARC 12 also builds in the Performance Optimized ported wedge and ported down-fire, the smaller and cheaper single-driver boxes. A pair takes this Professional cabinet: one shared chamber on a 2.25 inch three-layer baffle with both woofers flush in the outer layer, and a slot port gated at 840 W for the pair. It carries a 2 year warranty, against 1 year on the Performance Optimized lines.

Arc Audio does not publish the mounting hole locations for the ARC 12, so we cannot install the threaded inserts before it ships. The threaded insert kit comes in the box instead: inserts sized to the woofer, the correct drill bit, 2.5 inch allen-head screws, an allen key and woofer gasket tape. You set the inserts when you mount the woofer, and this box ships with two kits, one per woofer.

Yes, at 19 Hz, 24 dB per octave. Below tuning a vented box stops loading the cone and excursion runs away toward DC. With the filter in place this cabinet puts the Arc Audio ARC 12 at 79 percent of its usable travel at 840 W.

Not one we can show you. We do not build a sealed enclosure for the Arc Audio ARC 12 and Arc Audio publish no sealed volume for it, so the Performance Graphs tab carries no ported-versus-sealed chart: the only sealed box left to plot would be this cabinet stuffed and sealed, which nobody would build, and a comparison against it would tell you nothing you could buy. What a vented box gives up is the region below tuning, where the cone unloads and the 19 Hz subsonic filter takes over; around 24.0 Hz the vent carries the load and cone travel drops to its minimum, which no sealed alignment can do.

It is a vertical slot beside the woofer, the full height of the cavity, 3.00 inches wide and 43.5 square inches. It runs 12.38 inches to the back wall and turns once along it for 19.39 inches; the fold costs about 1.5 Hz and the port is cut for it. The channel runs at 15.5 metres per second at 840 W, 51 percent of its turbulence limit, and the mouth edges carry a 1/2 inch roundover so the air leaves the face at 10.9 metres per second against the 17 metres per second threshold where a slot starts to chuff.

76 lb, 41.50" W x 16.00" H x 19.12" D external. Every Professional cabinet is priced the same way, by its size: this one is 7.35 cubic feet outside. Delivery to the 48 states is inside the price; it ships as a 76 lb parcel and checkout adds nothing. Do not add polyfill; it ships dry on purpose.

No. This is an enclosure only, cut for the Arc Audio ARC 12 specifically: the 11.000 inch cutout, the 6.000 inch mounting depth allowance and the 3.99 cubic foot alignment all come from Arc Audio's published parameters. It fits both coil versions (D2 and D4), and the cabinet was checked against both. Bring your own driver.