Blaupunkt GBw 801
8″ subwoofer · 4 Ω · 200 W RMS
Fs 46 HzQts 0.41Vas 0.49 ft³
Recommended box
For a sedan, one sub, 200 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 | 0.28 ft³ (8 L) |
|---|---|
| Qtc | 0.67 |
| Fc | 76 Hz |
| F3 (−3 dB, no cabin gain) | 85 Hz |
| Example box (outside) | 10 1/4″ × 10 1/4″ × 8 1/2″ |
Ported
| Net volume | 0.57 ft³ (16 L) |
|---|---|
| Tuning (Fb) | 46 Hz |
| Port | round port Ø2 1/2″, 9 5/16″ long |
| Port velocity at 200 W | 128 ft/s |
| F3 (−3 dB, no cabin gain) | 44 Hz |
| Example box (outside) | 17″ × 15 3/4″ × 6 5/16″ |
Thiele/Small parameters
| Fs | 46 Hz |
|---|---|
| Qts | 0.41 |
| Qes | 0.457 |
| Qms | 3.64 |
| Vas | 0.49 ft³ |
| Re | 3.2 Ω |
| Sd | 29.5 in² |
| Xmax | ≈ 0.39″ |
| Mms | 45 g calc. |
| BL | 9.5 T·m calc. |
| EBP | 101 — suits ported calc. |
| Sensitivity, 1 W / 1 m | 86.7 dB calc. |
General
| Size | 8″ |
|---|---|
| Voice coils | 4 Ω |
| RMS power | 200 W |
Mounting dimensions
| Cutout diameter | 7 1/16″ |
|---|---|
| Mounting depth | 3 3/4″ |
| Overall diameter | 8 7/16″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 29.5 in².
“≈” 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.