Performance Optimized · Datasheet
Performance Optimized Wedge Wide Sealed Triple 12" Enclosure Audiomobile Encore 4412 · Triple 12" Sealed enclosure
- Net volume
- 1.232 cu ft per driver, 3.70 cu ft total, after both dividers and Audiomobile's published 0.110 cu ft displacement per driver
- Max mounting depth
- 4.90 in required; 5.92 in clearance above the motor against the raked rear panel
- External dimensions
- 44 in W × 17 in at the seat face H × 17.31 in at the base D
- Front baffle
- 1.5 in double baffle, outer layer machined as a flush recess
- Best For: Triple Audiomobile Encore 4412 SUV Cargo-Floor Builds
- Net Volume: 1.232 cu ft per Driver (3.70 cu ft Net Total)
- Driver Match: Three Audiomobile Encore 4412 (matched set), matched
- Construction: 3 Chambers | 44" Wide Wedge | V-Groove/Dado | Double 1.5" Baffle | 3 Terminal Cups
Spec of record
Technical specifications
| Specification | Value |
|---|---|
| Series | Proline X Performance Optimized Wedge Wide |
| Compatible Driver | Audiomobile Encore 4412, quantity 3, matched. Direct fit |
| Configuration | Triple 12 inch sealed wedge, 3 chambers, 1 driver per chamber |
| Mounting Position | SUV cargo floor, raked face against the rear seat back |
| Firing Direction | Rearward toward the liftgate. Not a down fire design |
| External Width | 44 in |
| External Height | 17 in at the seat face |
| External Depth | 17.31 in at the base, tapering to 11.13 in at the top |
| Internal Volume, Gross | 4.18 cu ft total |
| Internal Volume, Net Acoustic | 1.232 cu ft per driver, 3.70 cu ft total, after both dividers and Audiomobile's published 0.110 cu ft displacement per driver |
| Driver Mounting Depth | 4.90 in required; 5.92 in clearance above the motor against the raked rear panel |
| Alignment Per Driver | Encore 4412 Qtc 0.707, fc 43.7 Hz, F3 43.7 Hz anechoic |
| Woofer Openings | 3 at 11.000 in |
| Woofer Layout | One row across the face |
| Frame Outer Diameter | 12.65 in |
| Fs / Qts / Qes | 32.0 Hz / 0.518 / 0.538 |
| Vas / Sd / Xmax | 30.1 L / 499 cm2 / 19 mm |
| Driver Power Handling | 1000 W RMS per driver, 3000 W RMS for the set of 3 (thermal rating) |
| Recommended Amplifier | 700-1000 W RMS per driver, 2,100-3,000 W RMS for the full set |
| Parameter Source | Audiomobile published specifications |
| Material | Langboard Elite MDF |
| Construction | CNC cut, V-groove and dado joinery |
| Panel Thickness | 0.75 in |
| Front Baffle | 1.5 in double baffle, outer layer machined as a flush recess |
| Internal Bracing | Two full-height 3/4 in dividers |
| Driver Mounting | Threaded inserts, stainless machine screws included |
| Terminal Cups | Three Proline X ABS and carbon fiber composite, on the rear panel, one per chamber, pre wired 12 gauge OFC |
| Acrylic Insert | Gloss black acrylic baffle insert standard |
| Damping | Light polyfill wall lining in every chamber, does not alter acoustic volume |
| Carpet | Plush black |
| Shipping Weight | 82 lb |
| Warranty | 1 Year Limited |
| Built In | Tullahoma, Tennessee |
Modelled response
Performance in this enclosure
00Sizing the amplifier
Every wattage on this panel is per driver. This cabinet holds three, so the amplifier feeds all three at once.
01Is it a sealed driver?
Efficiency bandwidth product places the motor before anything else is decided.
02What the box does to it
1.232 cu ft against a 30.1 L Vas.
03The watts that reach Xmax (in this enclosure)
Travel scales with the square root of power, so there is one wattage that puts the cone exactly on 19.1 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.
| Param | Value | Unit | Note |
|---|---|---|---|
| Fs | 32.00 | Hz | free-air resonance |
| Qts | 0.518 | Encore 4412 | |
| Vas | 30.11 | L | equivalent compliance |
| Sd | 498.8 | cm² | effective piston area |
| Xmax | 19.1 | mm | one-way linear travel |
| Pe | 1000 | W | continuous RMS |
| SPL | 84.5 | dB | 1 W / 1 m, derived from T/S |
Driver parameters as published by Audiomobile Encore 4412 published specifications. Curves computed against this enclosure’s actual net airspace.
From the shop floor
Installer's take
Start with the size. 1.232 cubic feet per driver puts the Encore 4412 at Qtc 0.707, resonance 43.7 Hz, half power 43.7 Hz anechoic: maximally flat, no peak, the lowest F3 a sealed box reaches without a lift. Audiomobile publish no sealed recommendation for the Encore 4412, so this is the Butterworth box.
Measure the base depth, not the top. This cabinet is 17.31 in deep where it meets the floor, 11.13 at the top, 44 wide and 17 tall. In an SUV the 44 has to clear between the rear wheel wells at floor height, the base depth is measured from the seat back with the seat upright and latched, and the 17 has to clear the cargo cover.
All three terminal cups are on the rear panel, and the rear panel is the face that goes against the seat back. Wire all three before the box goes in, with enough slack to slide it into place; once the raked face is against the seat you cannot reach them.
The load depends on which coil version you run, so settle the coil before you buy the amplifier; the wiring section lists the clean loads for each version.
Power. Size the amplifier for the set, not one driver: 700 to 1000 W RMS per driver is 2,100 to 3,000 W RMS across all 3. Set the 25 Hz subsonic to use the top of that range; without it keep each driver under 844 W. At 3,000 W the charging system is part of the install: alternator output, the big three, and a battery that holds voltage under load.
Audiomobile publish no Qms for the Encore 4412, so the printed Qts could not be cross-checked.
Polyfill is in as a wall lining in every chamber. Do not add more: it makes the box act larger and walks Qtc off 0.71.
Before you order
Questions
Does this fit the Audiomobile Encore 4412, and its coil versions?
Yes. Each opening is cut to 11.000 in for the 12.65 in frame, and the 4.90 in deep motor clears the raked rear panel with 5.92 in to spare. Coil versions of the Audiomobile Encore 4412 share the frame, cutout and mounting depth, so any of them drops in. The alignment on this page is computed on the Encore 4412 parameters.
Run three matched drivers, same model and same coil, so every chamber sees the alignment on this page.
Why 1.232 cubic feet per driver, and what alignment does it target?
On Audiomobile's published Fs 32.0 Hz, Qts 0.518 and Vas 30.1 liters, 1.232 cubic feet per driver gives Qtc 0.707, system resonance 43.7 Hz and half power 43.7 Hz.
Qtc 0.707 is maximally flat: the deepest response a sealed box gives without a lift near resonance.
What amplifier power should I run, and how should I wire it?
Audiomobile rates the Encore 4412 at 1000 watts RMS per driver. Recommended amplifier: 700 to 1000 W RMS per driver, 2,100 to 3,000 W RMS for the full set of 3. The top of that range needs the 25 Hz subsonic; without it keep each driver under 844 W.
Loads depend on the coil version you run. Three dual 4 ohm drivers, coils in series, all three in parallel: 2.67 ohms; coils in parallel, all three in series: 6 ohms. Dual 2 ohm: 1.33 ohms or 3 ohms the same two ways. Single 4 ohm: 1.33 ohms in parallel, 12 ohms in series. Use the lower load only on an amplifier rated stable there.
Will it fit my SUV?
It is 44 inches wide, 17 tall and 17.31 deep at the base, tapering to 11.13 at the top. Measure between the rear wheel wells, the floor depth with the seat upright, and the height under your cargo cover.
The raked face goes against the seat back and the woofers fire toward the liftgate.
Why are all three terminal cups on the back?
Each driver has its own sealed chamber, and the center chamber has no side wall to take a cup. Putting all three on the rear panel gives a matching set, one cup per chamber.
Wire them at the amplifier end; there is no cross-chamber wiring inside the cabinet.
What is the expected low-frequency extension?
Anechoic F3 is 43.7 Hz per driver with system resonance at 43.7 Hz.
Those figures exclude cabin gain. An SUV cabin adds real output below about 50 Hz, so in-vehicle response runs deeper than the numbers above.
Do I need to add polyfill or damping?
No. Polyfill is already installed as a light wall lining in every chamber, and the quantity is chosen so it does not change the acoustic volume.
Do not add more. Packing a sealed box makes it behave as though it were larger, which moves the alignment away from 1.232 cubic feet per driver.
Are the drivers included?
No. This is an enclosure only. You receive the cabinet finished in plush black carpet with the gloss black acrylic baffle insert, three pre-wired terminal cups on the rear panel, the polyfill lining in place, threaded inserts and stainless machine screws.
Bring three matched Audiomobile Encore 4412 drivers. The cabinet is cut direct fit to them, not a general purpose 12 inch box.
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