Performance Optimized · Datasheet
Performance Optimized Wedge Wide Sealed Triple 12" Enclosure Deaf Bonce Apocalypse DB-SA2712 · Triple 12" Sealed enclosure
- Net volume
- 0.842 cu ft per driver, 2.52 cu ft total, after both dividers and an estimated 0.080 cu ft displacement per driver
- Max mounting depth
- 6.56 in required; 0.75 in clearance above the motor against the raked rear panel
- External dimensions
- 44 in W × 17 in at the seat face H × 13.80 in at the base D
- Front baffle
- 1.5 in double baffle, outer layer machined as a flush recess
- Best For: Triple Deaf Bonce Apocalypse DB-SA2712 SUV Cargo-Floor Builds
- Net Volume: 0.842 cu ft per Driver (2.52 cu ft Net Total)
- Driver Match: Three Deaf Bonce Apocalypse DB-SA2712 (Dual 2 Ohm / Dual 1 Ohm), 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 | Deaf Bonce Apocalypse DB-SA2712, 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 | 13.80 in at the base, tapering to 7.61 in at the top |
| Internal Volume, Gross | 2.87 cu ft total |
| Internal Volume, Net Acoustic | 0.842 cu ft per driver, 2.52 cu ft total, after both dividers and an estimated 0.080 cu ft displacement per driver |
| Driver Mounting Depth | 6.56 in required; 0.75 in clearance above the motor against the raked rear panel |
| Alignment Per Driver | Apocalypse DB-SA2712 D2 Qtc 0.660, fc 54.4 Hz, F3 58.6 Hz; Apocalypse DB-SA2712 D1 Qtc 0.660, fc 54.4 Hz, F3 58.6 Hz anechoic |
| Woofer Openings | 3 at 11.000 in |
| Woofer Layout | One row across the face |
| Frame Outer Diameter | 12.64 in |
| Fs / Qts / Qes | 33.0 Hz / 0.400 (Deaf Bonce publish no Qes or Qms) |
| Vas / Sd / Xmax | 41.0 L / not published / 18 mm |
| Driver Power Handling | 1700 W RMS per driver, 5100 W RMS for the set of 3 (thermal rating) |
| Recommended Amplifier | 1190-1700 W RMS per driver, 3,570-5,100 W RMS for the full set |
| Parameter Source | Deaf Bonce 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 | 72 lb |
| Warranty | 1 Year Limited |
| Built In | Tullahoma, Tennessee |
From the shop floor
Installer's take
Start with the size. 0.842 cubic feet per driver puts the Apocalypse DB-SA2712 at Qtc 0.660, resonance 54.4 Hz, half power 58.6 Hz anechoic. The 6.56 in deep motor sets the shallowest the wedge can be, and that smallest box is still more air than flat wants, so it lands below 0.707: tighter and more damped, trading a little extension for control. One box serves every coil version: the Dual 2 Ohm at Qtc 0.660, the Dual 1 Ohm at Qtc 0.660.
Measure the base depth, not the top. This cabinet is 13.80 in deep where it meets the floor, 7.61 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.
Impedance. Apocalypse DB-SA2712 D2: wire for 3 ohms (coils in parallel, the three in series), the load most monoblocks are built to deliver full power into; 1.33 ohms is the other clean option (coils in series, the three cups in parallel). Apocalypse DB-SA2712 D1: the clean options are 0.67 ohms and 1.5 ohms. Wire for 1.5 ohms (coils in parallel, the three in series) unless the amplifier is rated stable at 0.67 ohms. Work the load out before you buy the amplifier, not after.
Power. Size the amplifier for the set, not one driver: 1190 to 1700 W RMS per driver is 3,570 to 5,100 W RMS across all 3. At 5,100 W the charging system is part of the install: alternator output, the big three, and a battery that holds voltage under load.
Deaf Bonce publish no Qms for the Apocalypse DB-SA2712, so the printed Qts could not be cross-checked. Deaf Bonce do not publish driver displacement; we deduct an estimated 0.080 per driver, so true net can sit a few hundredths either way.
Polyfill is in as a wall lining in every chamber. Do not add more: it makes the box act larger and walks Qtc off 0.66.
Before you order
Questions
Does this fit the Deaf Bonce Apocalypse DB-SA2712, and its coil versions?
Yes. Each opening is cut to 11.000 in for the 12.64 in frame, and the 6.56 in deep motor clears the raked rear panel with 0.75 in to spare. Both coil versions share the frame, cutout and mounting depth; the alignment table lists each.
Run three matched drivers, same model and same coil, so every chamber sees the alignment on this page.
Why 0.842 cubic feet per driver, and what alignment does it target?
On Deaf Bonce's published Fs 33.0 Hz, Qts 0.400 and Vas 41.0 liters, 0.842 cubic feet per driver gives Qtc 0.660, system resonance 54.4 Hz and half power 58.6 Hz.
The 6.56 in deep motor sets the shallowest the wedge can be, and that smallest box is still more air than flat wants, so it lands below 0.707: tighter and more damped, trading a little extension for control.
What amplifier power should I run, and how should I wire it?
Deaf Bonce rates the Apocalypse DB-SA2712 at 1700 watts RMS per driver. Recommended amplifier: 1190 to 1700 W RMS per driver, 3,570 to 5,100 W RMS for the full set of 3.
Each Apocalypse DB-SA2712 D2 has two 2 ohm voice coils, 4 ohms in series or 1 ohm in parallel. With each driver's coils in series and the three cups in parallel, the three present 1.33 ohms to a mono amplifier. With each driver's coils in parallel and the three in series, they present 3 ohms. Three drivers do not reach the round loads a pair does, so check the result against your amplifier's minimum stable impedance before powering up. Each Apocalypse DB-SA2712 D1 has two 1 ohm voice coils, 2 ohms in series or 0.5 ohms in parallel. With each driver's coils in series and the three cups in parallel, the three present 0.67 ohms to a mono amplifier. With each driver's coils in parallel and the three in series, they present 1.5 ohms. Three drivers do not reach the round loads a pair does, so check the result against your amplifier's minimum stable impedance before powering up.
Will it fit my SUV?
It is 44 inches wide, 17 tall and 13.80 deep at the base, tapering to 7.61 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 58.6 Hz per driver with system resonance at 54.4 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 0.842 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 Deaf Bonce Apocalypse DB-SA2712 drivers. The cabinet is cut direct fit to them, not a general purpose 12 inch box.
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