Proline X PO 12D-P W RSS315HF dual ported wedge, front baffle with gloss black insert, 32 by 16 inches.

Performance Optimized · Datasheet

Dayton Audio Reference RSS315HF Dual Box: Ported 12" Wedge Enclosure Dual 12" Ported enclosure

Net volume: 2.20 cu ft, one shared chamber (1.10 per driver)
Tuning: 30.0 Hz
External dimensions: 32.00" W x 16" H
Front baffle: 1.5 in double baffle

Buy at Audio IntensityFactory-direct, ships from Tullahoma

Dayton Audio Reference RSS315HFBuy at Audio Intensity

Alignment: 2.20 cu ft net shared, vented at 30.0 Hz, F3 37.2 Hz
Drivers: Pair of Dayton Audio Reference RSS315HF (RSS315HF-4 or RSS315HFA-8), 400 W RMS each
Port: Triangular side slot, 24.7 sq in
Cabinet: 32.00" W x 16" H x 11.62/17.45" D

Spec of record

Technical specifications

Series	Proline X Performance Optimized Ported Wedge
Compatible Driver	Dayton Audio RSS315HF-4 (single 4 ohm) or RSS315HFA-8 (single 8 ohm), quantity 2. Direct fit
External Dimensions	32.00" W x 16" H, 17.45" D at the base tapering to 11.62" at the top
Internal Volume, Net	2.20 cu ft, one shared chamber (1.10 per driver)
Tuning	30.0 Hz
Port	Triangular side slot, 24.7 sq in, 25.4 in path
Alignment	F3 37.2 Hz anechoic, ripple 0.8 dB
Driver Openings	11.10 in cutout, 12.36 in recess, x2 at 8.625 / 23.375 in
Driver Mounting	Threaded inserts pressed at the shop to Dayton's 11.61 in bolt circle
Driver Displacement	0.092 cu ft each, estimated; Dayton publish none
Parameter Source	Dayton Audio spec sheet and product page
Motor Clearance	3.79 in to the port panel
Bracing	2 windowed C braces
Material	Langboard Elite MDF, V-groove and dado joinery
Front Baffle	1.5 in double baffle
Terminal Cup	One, side mounted, pre wired 12 gauge OFC to both drivers
Acrylic Insert	Gloss black acrylic baffle insert standard
Damping	None, ships dry
Carpet	Plush black
Shipping Weight	62 lb
Warranty	1 Year Limited
Built In	Tullahoma, Tennessee

Modelled response

Performance in this enclosure

Net airspace

2.20

cu ft

Tuning

30.0

Hz · Fb

Half power

37.2

Hz · F3, anechoic

Xmax at

4234

W RMS · 24 Hz subsonic

With NO filter

1132

W RMS · unfiltered

Port

12.2

m/s at the mouth

01Is this driver right for a ported box?

Efficiency bandwidth product places the motor before anything else is decided.

EBP = Fs ÷ Qes = 53.8

Dayton Audio RSS315HF-4 · EBP 53.8

Between 50 and 100 a driver takes either load, and the choice becomes one of priorities rather than of physics. The Dayton Audio RSS315HF-4 reads 53.8. Ported buys output and low-end reach around tuning; sealed buys a shallower rolloff below it. This cabinet takes the first trade.

02What the box does to it

2.20 cu ft net against a 168.2 L Vas, vented at 30.0 Hz.

Fb = 30.0 Hz · F3 = 37.2 Hz · passband ripple 0.77 dB

Dayton Audio RSS315HF-4 · Fb 30.0 Hz, F3 37.2 Hz

Anechoic, before any cabin gain, with the 24 Hz subsonic filter already applied. The vent takes over below 30 Hz and the cone stops doing the work there, which is what holds travel down at the bottom of the passband.

03Ported vs Sealed

No sealed comparison is shown for this driver.

A ported-versus-sealed chart is only worth reading against a sealed box someone would actually build: the one we make for the driver, or the one its maker recommends. Neither exists for the Dayton Audio RSS315HF-4 — we do not build a sealed enclosure for it and Dayton publish no sealed volume for it — so rather than compare this cabinet against itself stuffed and sealed, a box no one would build, the comparison is left out.

04The watts that reach Xmax (in this enclosure)

Travel scales with the square root of power, so there is one wattage that puts both cones exactly on Dayton's published 14.3 mm. The two traces are the same cabinet with the subsonic filter switched on and switched off. Every power figure in this section is for the pair, split evenly.

P_Xmax = 4234 W with a 24 Hz subsonic · 1132 W with none → the filter is worth 3.7×

4234 W · subsonic at 24 Hz, 24 dB/oct1132 W · no subsonic filterXmax 14.3 mm one-way, published

Each trace touches the limit and no further, because each is drawn at the exact power that puts the cone on 14.3 mm. With a 24 Hz subsonic that takes 4234 W, reached first at 48 Hz. Take the filter away and the same cabinet reaches 14.3 mm on 1132 W — the filter is worth 3.7× the safe power. A vent unloads the cone below tuning, so there is nothing holding it once the box stops loading: on a sealed build a subsonic filter is an improvement, here it is required equipment. The unfiltered trace is still rising where this chart stops at 20 Hz, so treat 1132 W as a bound rather than a floor. Every wattage on this page is a MECHANICAL limit, not an electrical one. It is the power at which the cone runs out of linear travel in this cabinet, and nothing more. What the voice coil can dissipate as heat is a separate ceiling set by the driver, not by the box — Dayton rate this one at 800 W RMS, and that is the number that binds first here: heat stops you before travel does, so treat 800 W as the ceiling and the travel figures above as headroom. Final wired impedance, amplifier output and how long you hold the level are all electrical questions this graph does not answer.

From the shop floor

Installer's take

Two RSS315HFs on 2.20 cubic feet at 30.0 Hz, one shared chamber, 37.2 Hz anechoic. The mouth runs about 12 m/s with both at 400 watts.

Drivers sit at 8.625 and 23.375 from the mouth side, braces between them, each motor inside a brace window.

Dayton print the bolt circle, so the threaded inserts are pressed into the baffle at the shop. Ships dry, subsonic near 25 Hz.

Before you order

Questions

Why is this enclosure tuned to 30.0 Hz?

This cabinet gives the pair 2.20 cubic feet in one shared chamber, 1.10 per driver, vented at 30.0 Hz through a 24.7 square inch triangular port, and reaches 37.2 Hz anechoic in a 32 by 16 inch dual wedge. The port runs 18.5 m/s in the channel and 12.2 at the flared mouth with both drivers at 400 watts, and each cone peaks at 6.2 of its 14.3 mm. Passband ripple is 0.8 dB.

Why the 20 degree wedge, and why rear-firing?

The rake on the back matches a factory rear seat so the cabinet sits flush and the trunk floor in front stays usable; the baffle is vertical and fires rearward, using the trunk as an acoustic extension.

Do I need a subsonic filter?

Yes. Below 30.0 Hz the port no longer controls the cones; set the filter near 25 Hz.

How much power can I run, and at what impedance?

Dayton rate the RSS315HF at 400 watts RMS per driver, 800 across the pair; aim for 280 to 400 per driver. A pair of RSS315HF-4 (one 4 ohm coil each) is 2 ohms in parallel or 8 ohms in series. A pair of RSS315HFA-8 (one 8 ohm coil each) is 4 ohms in parallel or 16 ohms in series.

Would a sealed box be better for me?

Sealed is tighter and smaller; this ported pair reaches 37.2 Hz anechoic, which a sealed box of reasonable size cannot match on these drivers.

How does the side port work?

The port is a triangular slot along the back, 25.4 inches of path, exiting through the side panel with a rounded mouth so the air leaves without a sharp edge to chuff on.

Does this enclosure ship with polyfill?

No, and do not add any: fill in a ported box detunes it.

Are the RSS315HFs included?

No. This is an enclosure only, for a pair you supply. It fits both Dayton versions, the RSS315HF-4 (single 4 ohm) and the RSS315HFA-8 (single 8 ohm); the pair is tuned on the RSS315HF-4 and the RSS315HFA-8 was run through the same cabinet: F3 36.3 Hz, ripple 2.0 dB, each cone 6.6 of its 14.3 mm at 400 W. You receive the cabinet in plush black carpet with the gloss black acrylic insert, the side-mounted pre-wired terminal cup and the threaded inserts already pressed.

Same series, same size