Quantum Audio QWX2000/10D4
10″ subwoofer · dual 4 Ω · 500 W RMS
The Quantum Audio QWX2000/10D4 is a 10″ subwoofer. With Qts 0.61 and EBP 56 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder.
| Source | web.archive.org, dbdrive.net · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 2 of 4 — missing: mounting depth, magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 500 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 | 52 Hz |
| F3 (−3 dB, no cabin gain) | 48 Hz |
| Example box (outside) | 12 5/8″ × 12 5/8″ × 18 3/8″ |
Ported
deeper, louder| Tuning (Fb) | 38 Hz |
|---|---|
| Port | slot 1 × 14 5/16″, 29 1/16″ long |
| Port velocity at 500 W | 66 ft/s |
| F3 (−3 dB, no cabin gain) | 38 Hz |
| Example box (outside) | 15 3/16″ × 15 3/4″ × 12 3/8″ |
Deeper: 1.98 ft³ (56 L) tuned to 34 Hz, 31 1/2″ × 15 3/4″ × 12″ 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 | 500 W |
| Fs | 39.4 Hz |
| Qts | 0.61 |
| Qes | 0.702 |
| Qms | 4.6 |
| Vas | 0.85 ft³ |
| Re (one coil) | 3.6 Ω |
|---|---|
| Sd | 51.2 in² |
| Xmax | 0.51″ |
| Vd | 26.2 in³ calc. |
| Mms | 104 g calc. |
| BL | 11.5 T·m calc. |
| EBP | 56 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 85.2 dB calc. |
Mounting dimensions
| Cutout diameter | 9 1/4″ |
|---|---|
| Mounting depth | ≈ 5 1/8″ |
| Overall diameter | 10 13/16″ |
Where it fits in a vehicle
Spots from our vehicle guides where the cutout, mounting depth and recommended box fit. The spot sizes are approximate — measure your own vehicle.
- F-150 SuperCrew — under the rear seat sealed and ported box
- Ram Crew Cab — under the rear seat sealed and ported box
- Tacoma Double Cab — under the rear seat sealed and ported box
- Tacoma Access Cab — behind the front seats sealed and ported box
- Bronco 4-door — behind the rear seat sealed and ported box
- Wrangler 4-door, hard top — behind the rear seat sealed and ported box
- Wrangler 4-door, soft top — behind the rear seat sealed and ported box
- Silverado / Sierra Crew Cab — under the rear seat sealed and ported box
- FJ Cruiser — behind the rear seat sealed and ported box
- El Camino 1978–87 — behind the seat sealed and ported box
- Cherokee XJ — cargo area, spare moved out sealed and ported box
- Excursion — behind the third row sealed and ported box
- Mustang 2015–2023 coupe — trunk sealed and ported box
- Challenger / Charger — trunk sealed and ported box
- Tesla Model 3 — well under the trunk floor sealed and ported box
- Club Car Precedent — under the rear seat sealed and ported box
“≈” 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
- web.archive.org/web/20240624040747/https://quantumaudio.net/wp-content/uploads/2
- web.archive.org/web/20240613053229/https://quantumaudio.net/wp-content/uploads/2
- dbdrive.net/products/qwx2000-10d4-10in-4-ohm-dvc-quantum-x-series-woofer
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 QWX4000/10D4 10″ · dual 4 Ω
Similar 10″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Phoenix Gold SXT10D4 (slim, DVC 4 ohm) 1.17 ft³ sealed · 0.81 ft³ ported
- Rockville W10K5S2 0.99 ft³ sealed · 1.27 ft³ ported
- Kicker CompVT 10" 2-Ohm SVC (43CVT102) 0.92 ft³ sealed · 0.92 ft³ ported
- Ground Zero GZIW 10XSPL-D2 (2x2 Ohm) 1.20 ft³ sealed · 0.85 ft³ ported
- Kicker CompVT 10" 2-Ohm SVC (52CVT102) 1.09 ft³ sealed · 1.52 ft³ ported
- Swat MAS-10 1.09 ft³ sealed · 0.85 ft³ ported
FAQ
What box does the Quantum Audio QWX2000/10D4 need?
Recommended net volume: 1.17 ft³ sealed, 0.81 ft³ ported tuned to 38 Hz — for one sub in a sedan at 500 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Quantum Audio QWX2000/10D4 Thiele/Small specs?
Fs 39.4 Hz, Qts 0.61, Vas 0.85 ft³, Xmax 0.51″, Sd 51.2 in².
How much power does the Quantum Audio QWX2000/10D4 handle and how do I wire it?
RMS power rating: 500 W. Dual 4 Ω voice coils: series gives 8 Ω, parallel gives 2 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.
Is the Quantum Audio QWX2000/10D4 better sealed or ported?
EBP 56: both work — sealed 1.17 ft³ is tighter and smaller, ported 0.81 ft³ tuned to 38 Hz is deeper and louder.
What port does the Quantum Audio QWX2000/10D4 need?
For the 0.81 ft³ ported box tuned to 38 Hz: slot 1 × 14 5/16″, 29 1/16″ long, area 14.1 in²; or a round port Ø4 1/4″, ≈ 29 1/16″ long. Port air speed at 500 W: 66 ft/s.
What box do two Quantum Audio QWX2000/10D4 subs need?
Two subs need twice the volume: 2.33 ft³ sealed, or 1.62 ft³ ported at the same 38 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.