SoundQubed HDS2.208 D4
8″ subwoofer · dual 4 Ω · 600 W RMS
Fs 44.4 HzQts 0.51Vas 0.19 ft³Xmax 0.51″
Recommended box
For a sedan, one sub, 600 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 | 0.30 ft³ (8.5 L) |
|---|---|
| Qtc | 0.65 |
| Fc | 57 Hz |
| F3 (−3 dB, no cabin gain) | 64 Hz |
| Example box (outside) | 10 5/8″ × 10 5/8″ × 8 1/4″ |
Ported
| Net volume | 0.60 ft³ (17 L) |
|---|---|
| Tuning (Fb) | 32 Hz |
| Port | slot 1 15/16 × 14 5/16″, 118 1/4″ long |
| Port velocity at 600 W | 38 ft/s |
| F3 (−3 dB, no cabin gain) | 29 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 12 11/16″ |
The volume and tuning are the recommendation, but the port doesn’t fit this example box. Size the box and port in the designer.
Open ported box in designerThiele/Small parameters
| Fs | 44.4 Hz |
|---|---|
| Qts | 0.51 |
| Qes | 0.579 |
| Qms | 4.47 |
| Vas | 0.19 ft³ |
| Re (one coil) | ≈ 3.4 Ω |
| Sd | 31.9 in² |
| Xmax | 0.51″ |
| Vd | 16.3 in³ calc. |
| Mms | 145 g calc. |
| BL | 15.4 T·m calc. |
| EBP | 77 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 81.1 dB calc. |
General
| Size | 8″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 600 W |
Mounting dimensions
| Cutout diameter | 7 1/2″ |
|---|---|
| Mounting depth | 5 1/2″ |
“≈” 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 SoundQubed 8″ models
- SoundQubed HDS2.208 D2 8″ · dual 2 Ω
- SoundQubed HDX 8 D2 8″ · dual 2 Ω
- SoundQubed HDX 8 D4 8″ · dual 4 Ω