Fi Audio X10 D2
10″ subwoofer · dual 2 Ω · 750 W RMS
| 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, 750 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) | Flat and accurate · 0.71 |
|---|---|
| Fc | 52 Hz |
| F3 (−3 dB, no cabin gain) | 54 Hz |
| Example box (outside) | 12 5/8″ × 12 5/8″ × 8 3/8″ |
Ported
deeper, louder| Tuning (Fb) | 44 Hz |
|---|---|
| Port | 2 round ports Ø2 1/2″, 15 7/8″ long |
| Port velocity at 750 W | 152 ft/s |
| F3 (−3 dB, no cabin gain) | 38 Hz |
| Example box (outside) | 18″ × 15 3/4″ × 8 7/16″ |
At 750 W this example’s port will be noisy: air speed 152 ft/s, while the limit is 82 ft/s. It stays quiet up to about 210 W. Full power needs a port of at least 18.4 in², which means a bigger box than this example — size it in the designer.
Open ported box in designerDeeper: 1.02 ft³ (29 L) tuned to 35 Hz, 22 5/8″ × 15 3/4″ × 8 7/16″ 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 | 750 W |
| Fs | 32.5 Hz |
| Qts | 0.44 |
| Qes | 0.48 |
| Qms | 6.01 |
| Vas | 0.69 ft³ |
| Re (one coil) | 1.4 Ω |
|---|---|
| Sd | 48.1 in² |
| Xmax | 0.79″ |
| Vd | 37.8 in³ calc. |
| Mms | 166 g calc. |
| BL | 9.9 T·m calc. |
| EBP | 68 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 83.5 dB calc. |
Mounting dimensions
| Cutout diameter | 9 1/4″ |
|---|---|
| Mounting depth | 6″ |
| Overall diameter | 11″ |
“≈” 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/20151204181607/http://www.ficaraudio.com:80/product/x-series
- web.archive.org/web/20181115115452/http://www.ficaraudio.com:80/product/x-series
Other Fi Audio 10″ models
- Fi Audio Alpha v1 10 S1 10″ · 1 Ω
- Fi Audio Alpha v1 10 S2 10″ · 2 Ω
- Fi Audio Alpha v1 10 S4 10″ · 4 Ω
- Fi Audio Alpha v2 10 S2 10″ · 2 Ω
- Fi Audio Alpha v2 10 S4 10″ · 4 Ω
- Fi Audio Alpha v2.1 10 S2 10″ · 2 Ω
- Fi Audio Alpha v2.1 10 S4 10″ · 4 Ω
- Fi Audio BL-NEO 10 D1 10″ · dual 1 Ω
- Fi Audio BL-NEO 10 D2 10″ · dual 2 Ω
- Fi Audio BL10 D1 10″ · dual 1 Ω
- Fi Audio BL10 D2 10″ · dual 2 Ω
- Fi Audio BL10v3 D1 10″ · dual 1 Ω
Similar 10″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Infinity Kappa 100.9W 0.46 ft³ sealed · 0.81 ft³ ported
- Ground Zero GZHW 10SPL-D2 FLAT (2x2 Ohm) 0.49 ft³ sealed · 0.88 ft³ ported
- DL Audio Anaconda 10 (2+2) 0.49 ft³ sealed · 0.85 ft³ ported
- Ground Zero GZHW 10-D2 FLAT (2x2 Ohm) 0.53 ft³ sealed · 0.88 ft³ ported
- Alpine R2-W10D4 0.48 ft³ sealed · 1.27 ft³ ported
- URAL Patriot 10 (4+4) 0.46 ft³ sealed · 0.81 ft³ ported
FAQ
What box does the Fi Audio X10 D2 need?
Recommended net volume: 0.44 ft³ sealed, 0.78 ft³ ported tuned to 44 Hz — for one sub in a sedan at 750 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Fi Audio X10 D2 Thiele/Small specs?
Fs 32.5 Hz, Qts 0.44, Vas 0.69 ft³, Xmax 0.79″, Sd 48.1 in².
What is the Fi Audio X10 D2 mounting depth?
Mounting depth is 6″, cutout diameter 9 1/4″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Fi Audio X10 D2 handle and how do I wire it?
RMS power rating: 750 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.