Deaf Bonce Apocalypse DB-SA2508 D1
8″ subwoofer · dual 1 Ω · 800 W RMS
Fs 35 HzQts 0.55Vas 0.67 ft³Xmax 0.55″
Recommended box
For a sedan, one sub, 800 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.
Sealed
| Net volume | 0.60 ft³ (17 L) |
|---|---|
| Qtc | 0.80 |
| Fc | 51 Hz |
| F3 (−3 dB, no cabin gain) | 48 Hz |
| Example box (outside) | 10 5/8″ × 10 5/8″ × 14 3/8″ |
Ported
| Net volume | 1.31 ft³ (37 L) |
|---|---|
| Tuning (Fb) | 32 Hz |
| Port | slot 1 9/16 × 14 5/16″, 41 3/16″ long |
| Port velocity at 800 W | 75 ft/s |
| F3 (−3 dB, no cabin gain) | 28 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 9 3/4″ |
Thiele/Small parameters
| Fs | 35 Hz |
|---|---|
| Qts | 0.55 |
| Qes | 0.606 |
| Qms | 6 |
| Vas | 0.67 ft³ |
| Re (one coil) | ≈ 0.85 Ω |
| Sd | ≈ 33.3 in² |
| Xmax | 0.55″ |
| EBP | 58 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 83.3 dB calc. |
General
| Size | 8″ |
|---|---|
| Voice coils | dual 1 Ω |
| RMS power | 800 W |
Mounting dimensions
| Cutout diameter | 7 7/16″ |
|---|---|
| Mounting depth | 5 1/4″ |
Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).
“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.
Data sources
Other Deaf Bonce 8″ models
- Deaf Bonce Apocalypse DB-SA2508 D2 8″ · dual 2 Ω