Dayton Audio Reference RSS315HF Box: Sealed 12" Wedge Enclosure Single 12" Sealed enclosure

The Reference RSS315HF, yes, in both coil versions. The baffle is cut to 11.10 in for Dayton's 12.36 in frame. The 5.75 inch motor clears the cabinet with 2.62 inch to spare.

Any other 12, no. The airspace is engineered around the Reference RSS315HF's own Qts and Vas, and a different woofer that happened to drop into the hole would not see the alignment printed on this page.

1.75 cubic feet net on Dayton's published figures: the RSS315HF-4 (single 4 ohm) reads Qtc 0.640 with resonance at 39.7 Hz and half power at 44.3 Hz, and the RSS315HFA-8 (single 8 ohm) reads Qtc 0.774 with resonance at 38.2 Hz and half power at 35.2 Hz. One cabinet serves both coils, built to the volume that keeps both closest to maximally flat. That is spread either side of maximally flat: the lower-Q coil a little drier, the higher-Q coil a little punchier.

Cabinet gain in a vehicle lifts the bottom end further, so in the car this reads deeper than the anechoic figures.

Dayton rates the Reference RSS315HF at 400 watts RMS, so target 280 to 400 watts RMS at the final load.

Dayton sells the RSS315HF as RSS315HF-4 (single 4 ohm) and RSS315HFA-8 (single 8 ohm): the RSS315HF-4 (single 4 ohm) is a single 4 ohm coil, a 4 ohm load; the RSS315HFA-8 (single 8 ohm) is a single 8 ohm coil, an 8 ohm load. A parallel load at or under 1 ohm needs an amplifier rated for it. Confirm your amplifier's minimum stable impedance first.

The seat-side face carries a 20 degree rake that matches the lean of a factory rear seat back, so the cabinet sits flush against it and the cargo space in front stays usable. The baffle is the vertical trunk-lid-side face, so the driver fires rearward into the trunk cavity.

The trunk acts as an acoustic extension for the sealed box, and the cabin adds real output below 50 Hz, so in-vehicle response runs deeper than the anechoic 44.3 Hz on the RSS315HF-4 (single 4 ohm) and 35.2 Hz on the RSS315HFA-8 (single 8 ohm) on this page.

The baffle is two bonded 3/4 inch sheets, 1.5 inches through. A single 3/4 inch panel flexes under the pressure a 12 inch woofer puts on it at 400 watts, which smears output and works the driver loose over time; the second layer stiffens the face and gives the mounting hardware twice the material to bite.

The outer layer is machined as a flush recess to Dayton's 12.36 inch frame, so the driver bolts to the inner layer and sits flush with the gloss black acrylic insert.

Anechoic F3 is 44.3 Hz on the RSS315HF-4 (single 4 ohm) and 35.2 Hz on the RSS315HFA-8 (single 8 ohm). The lower-Q coil rolls off gently with F3 above fc; the higher-Q coil carries a small lift near resonance.

Those figures exclude cabin gain. In a car the cabin's transfer function adds real output below 50 Hz, so in-vehicle response runs deeper than the numbers above.

No. Polyfill is already installed as a light wall lining to control internal reflections, and the quantity is chosen so it does not change the acoustic volume.

Do not add more. Packing a sealed box with fill makes it behave as though it were larger, which walks the alignment away from the 1.75 cubic feet this cabinet was built to.

No driver. This is an enclosure only. You receive the cabinet finished in plush black carpet with the gloss black acrylic baffle insert, one side-mounted pre-wired terminal cup, the polyfill lining already in place, and stainless machine screws, with the threaded inserts already pressed.

The inserts are pressed at the shop on Dayton's published bolt circle for the Reference RSS315HF, so the driver bolts straight in. The Dayton Audio Reference RSS315HF is purchased separately, and the cabinet is cut direct fit to it, not a general purpose 12 inch box.