M12-S ARC A Single 12" Sealed Subwoofer Enclosure · Loaded with Arc Audio A12 · Single 12" Sealed enclosure

A Proline X Micro Series sealed enclosure at 1.0 cubic foot net in plush black, with the Arc Audio A12 already mounted to 8/32 threaded inserts, wired and sealed against the baffle in your chosen D2 or D4 configuration. Polyfill is installed and wiring runs 12 gauge OFC to a recessed Proline X terminal cup. An amplifier, power wire and RCA cables are not included.

Whichever matches the load your amplifier is stable at. D2 wired parallel gives a 1 ohm final load or 4 ohms in series. D4 wired parallel gives 2 ohms or 8 ohms in series. Most single subwoofer builds run the D4 parallel at 2 ohms. Decide before ordering, because the driver is installed and the cabinet is sealed before it ships.

Yes. This is a passive enclosure with no amplification built in. Target 250 to 300 watts RMS at your wired impedance from a Class D monoblock. The A12 is rated at 300 watts RMS, so a clean amplifier at that output is the correct match. A clean amplifier at the rated power will outperform a clipping one at double it. If you are keeping the factory head unit you will also need a line output converter or a DSP with speaker level inputs.

Because that is what Arc Audio publishes as the optimum for the A12. Their sealed range is 0.85 to 1.25 cubic feet and 1.0 is the centre of it, which produces the flattest sealed response and the most controlled transient behaviour. Net volume here is calculated by summing each CNC cut layer's opening rather than estimated from external dimensions, so the figure is exact rather than approximate.

Measure the width first. At 28.5 inches wide this is broader than people expect from a shallow 12, and width is usually what decides the install rather than the 7.5 inch depth. Behind a rear seat in a crew cab it generally goes. Under a seat it does not. Allow clearance for the terminal cup and amplifier leads on top of the cabinet dimensions.

Same design intent, more output. The A12 is rated at 300 watts RMS against the A10's 250, and the larger cone moves more air at the same excursion. Character is the same: controlled, accurate, front stage friendly rather than built for a meter reading. The A10 cabinet is 24 inches wide and 6 deep, this one is 28.5 wide and 7.5 deep, so the A12 asks for more space in both directions.

The enclosure carries a 2 year limited warranty on craftsmanship and materials, which is the standard across the Micro Series and Professional Series. Performance and Performance Optimized enclosures carry 1 year. The Arc Audio A12 carries its own manufacturer warranty separately, handled through Arc Audio.

Because screws into MDF hold well the first time and progressively worse after that. The baffle carries 8/32 threaded inserts on the back face with stainless machine screws supplied, so the driver mounts to steel rather than into board. That gives consistent clamping force at every point and lets the driver come out and go back in cleanly at any service interval without stripping the hole.