Quantum Audio QWX4000/10D4
10″ subwoofer · dual 4 Ω
| Source | web.archive.org · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 0 of 4 — missing: cutout, mounting depth, frame outer diameter, magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 300 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
smaller, tighter| Bass character (Qtc) | Tight and punchy · 0.80 |
|---|---|
| Fc | 54 Hz |
| F3 (−3 dB, no cabin gain) | 51 Hz |
| Example box (outside) | 12 3/16″ × 12 3/16″ × 12 5/16″ |
Ported
deeper, louder| Tuning (Fb) | 38 Hz |
|---|---|
| Port | slot 1 × 14 5/16″, 30 1/2″ long |
| Port velocity at 300 W | 59 ft/s |
| F3 (−3 dB, no cabin gain) | 33 Hz |
| Example box (outside) | 15″ × 15 3/4″ × 12 3/8″ |
Deeper: 1.66 ft³ (47 L) tuned to 30 Hz, 31 1/2″ × 15 3/4″ × 11″ outside — a bigger box with flatter deep bass. Open in the calculator
Projects with this subwoofer
Boxes that users designed and published: plans, cut sheet and response graph.
Thiele/Small parameters
| Size | 10″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | — |
| Fs | 42.8 Hz |
| Qts | 0.63 |
| Qes | 0.739 |
| Qms | 4.26 |
| Vas | 0.42 ft³ |
| Re (one coil) | 3.4 Ω |
|---|---|
| Sd | 48.7 in² |
| Xmax | 0.51″ |
| Vd | 24.9 in³ calc. |
| Mms | 164 g calc. |
| BL | 14.2 T·m calc. |
| EBP | 58 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 83 dB calc. |
Mounting dimensions
| Cutout diameter | ≈ 9 1/8″ |
|---|---|
| Mounting depth | ≈ 5 1/8″ |
“≈” 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 Quantum Audio 10″ models
- Quantum Audio Q2000/10D 10″ · dual 4 Ω
- Quantum Audio QFW10D4 10″ · dual 4 Ω
- Quantum Audio QPW3000/10D4 10″ · dual 4 Ω
- Quantum Audio QSW10F 10″ · 4 Ω
- Quantum Audio QW1000/10D4 10″ · dual 4 Ω
- Quantum Audio QW1000/10S4 10″ · 4 Ω
- Quantum Audio QWX2000/10D4 10″ · dual 4 Ω
Similar 10″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Diamond CM310D4 0.74 ft³ sealed · 0.81 ft³ ported
- American Bass XD-1044 0.67 ft³ sealed · 0.85 ft³ ported
- SPL Dynamics SW-250D2 0.51 ft³ sealed · 0.78 ft³ ported
- Rockford Fosgate Punch P3SD210 (Shallow, 2007) 0.74 ft³ sealed · 0.78 ft³ ported
- DD Audio SL710 D2 0.49 ft³ sealed · 0.88 ft³ ported
- DD Audio SL710 D4 0.49 ft³ sealed · 0.88 ft³ ported
FAQ
What box does the Quantum Audio QWX4000/10D4 need?
Recommended net volume: 0.67 ft³ sealed, 0.78 ft³ ported tuned to 38 Hz — for one sub in a sedan at 300 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Quantum Audio QWX4000/10D4 Thiele/Small specs?
Fs 42.8 Hz, Qts 0.63, Vas 0.42 ft³, Xmax 0.51″, Sd 48.7 in².