Sundown Audio Xv1-10 D2
10″ subwoofer · dual 2 Ω · 1,250 W RMS
The Sundown Audio Xv1-10 D2 is a 10″ subwoofer. With Qts 0.41 and EBP 63 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder. Long excursion (Xmax 1.18″) — built for loud music and high power.
| Source | web.archive.org · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 3 of 4 — missing: magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 1,250 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) | Dry and tight · 0.56 |
|---|---|
| Fc | 39 Hz |
| F3 (−3 dB, no cabin gain) | 52 Hz |
| Example box (outside) | 13″ × 13″ × 11 3/8″ |
Ported
deeper, louder| Tuning (Fb) | 31 Hz |
|---|---|
| Port | slot 1 15/16 × 14 5/16″, 84 1/2″ long |
| Port velocity at 1,250 W | 62 ft/s |
| F3 (−3 dB, no cabin gain) | 28 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 11 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 designerDeeper: 1.06 ft³ (30 L) tuned to 26 Hz, 31 1/2″ × 15 3/4″ × 13 9/16″ 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 2 Ω |
| RMS power | 1,250 W |
| Fs | 27.8 Hz |
| Qts | 0.41 |
| Qes | 0.44 |
| Qms | 5.3 |
| Vas | 0.65 ft³ |
| Re (one coil) | 1.9 Ω |
|---|---|
| Sd | 55.9 in² |
| Xmax | 1.18″ |
| Vd | 66 in³ calc. |
| Mms | 328 g calc. |
| BL | 15.7 T·m calc. |
| EBP | 63 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 81.5 dB calc. |
Mounting dimensions
| Cutout diameter | 10″ |
|---|---|
| Mounting depth | 8 7/8″ |
| Overall diameter | 11 5/8″ |
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.
- 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
- 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
- Club Car Precedent — under the rear seat sealed and ported box
Cone area (Sd) calculated from Fs, Vas and Mms: 55.9 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.
Data sources
- web.archive.org/web/20190807034628/http://sundownaudio.com/index.php/products/di
- web.archive.org/web/20210125011608/https://sundownaudio.com/lv/sa/discontinued/d
Voice coil versions
The same sub with different voice coils: the parameters are nearly the same — pick by your amp and wiring.
| Model | Voice coils | Re | Qes | Vas | Sealed | Ported |
|---|---|---|---|---|---|---|
| Sundown Audio Xv1-10 D2 | dual 2 Ω | 1.9 Ω | 0.44 | 0.65 ft³ | 0.71 ft³ | 0.88 ft³ · 31 Hz |
| Sundown Audio Xv1-10 D4 | dual 4 Ω | 3.05 Ω | 0.54 | 0.62 ft³ | 0.71 ft³ | 0.88 ft³ · 33 Hz |
Other Sundown Audio 10″ models
- Sundown Audio Ev2-10 D2 10″ · dual 2 Ω
- Sundown Audio Ev2-10 D4 10″ · dual 4 Ω
- Sundown Audio Ev4-10 D2 10″ · dual 2 Ω
- Sundown Audio Ev4-10 D4 10″ · dual 4 Ω
- Sundown Audio HZ-10 D4 10″ · dual 4 Ω
- Sundown Audio HZS-10 D4 10″ · dual 4 Ω
- Sundown Audio LCSv2-10 D4 10″ · dual 4 Ω
- Sundown Audio M10 D1 10″ · dual 1 Ω
- Sundown Audio M10 D2 10″ · dual 2 Ω
- Sundown Audio NSv2-10 D2 10″ · dual 2 Ω
- Sundown Audio NSv4-10 D1 10″ · dual 1 Ω
- Sundown Audio NSv4-10 D2 10″ · dual 2 Ω
Similar 10″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Diamond H102 0.48 ft³ sealed · 1.48 ft³ ported
- Phoenix Gold SX110D2 (DVC 2 ohm) 0.46 ft³ sealed · 0.81 ft³ ported
- Hertz Mille Pro MPS 250 S2 (shallow, SVC 2 ohm) 0.53 ft³ sealed · 0.92 ft³ ported
- Rockford Fosgate Punch HX2 RFD2110 0.49 ft³ sealed · 0.85 ft³ ported
- Audiobahn AW1000N 0.42 ft³ sealed · 0.74 ft³ ported
- Audiobahn AW1000Q 0.42 ft³ sealed · 0.74 ft³ ported
FAQ
What box does the Sundown Audio Xv1-10 D2 need?
Recommended net volume: 0.71 ft³ sealed, 0.88 ft³ ported tuned to 31 Hz — for one sub in a sedan at 1,250 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Sundown Audio Xv1-10 D2 Thiele/Small specs?
Fs 27.8 Hz, Qts 0.41, Vas 0.65 ft³, Xmax 1.18″, Sd 55.9 in².
What is the Sundown Audio Xv1-10 D2 mounting depth?
Mounting depth is 8 7/8″, cutout diameter 10″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Sundown Audio Xv1-10 D2 handle and how do I wire it?
RMS power rating: 1,250 W. Dual 2 Ω voice coils: series gives 4 Ω, parallel gives 1 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.
Is the Sundown Audio Xv1-10 D2 better sealed or ported?
EBP 63: both work — sealed 0.71 ft³ is tighter and smaller, ported 0.88 ft³ tuned to 31 Hz is deeper and louder.
What port does the Sundown Audio Xv1-10 D2 need?
For the 0.88 ft³ ported box tuned to 31 Hz: slot 1 15/16 × 14 5/16″, 84 1/2″ long, area 28.2 in²; or a round port Ø6″, ≈ 84 1/2″ long. Port air speed at 1,250 W: 62 ft/s.
What box do two Sundown Audio Xv1-10 D2 subs need?
Two subs need twice the volume: 1.41 ft³ sealed, or 1.77 ft³ ported at the same 31 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.