Fi Audio Xv3 10 D1

10″ subwoofer · dual 1 Ω · 1,000 W RMS

34.6 HzFs, resonance

0.48Qts

0.44 ft³Vas

1.06″Xmax

1,000 WRMS

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, 1,000 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

0.51 ft³ (14.5 L)

Net volume

Bass character (Qtc)	Flat and accurate · 0.65
Fc	47 Hz
F3 (−3 dB, no cabin gain)	54 Hz
Example box (outside)	12 5/8″ × 12 5/8″ × 9 3/8″

Open sealed box in designer

Ported

deeper, louder

0.78 ft³ (22 L)

Net volume

Tuning (Fb)	46 Hz
Port	2 round ports Ø2 1/2″, 14 3/8″ long
Port velocity at 1,000 W	190 ft/s
F3 (−3 dB, no cabin gain)	39 Hz
Example box (outside)	15 7/16″ × 15 3/4″ × 9 7/16″

At 1,000 W this example’s port will be noisy: air speed 190 ft/s, while the limit is 82 ft/s. It stays quiet up to about 180 W. Full power needs a port of at least 23.1 in², which means a bigger box than this example — size it in the designer.

Open ported box in designer

Deeper: 0.92 ft³ (26 L) tuned to 34 Hz, 17 3/16″ × 15 3/4″ × 9 7/16″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon

Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size	10″
Voice coils	dual 1 Ω
RMS power	1,000 W
Fs	34.6 Hz
Qts	0.48
Qes	0.51
Qms	7.29
Vas	0.44 ft³

Re (one coil)	0.7 Ω
Sd	48.1 in²
Xmax	1.06″
Vd	51.1 in³ calc.
Mms	232 g calc.
BL	8.3 T·m calc.
EBP	68 — sealed or ported calc.
Sensitivity, 1 W / 1 m	82 dB calc.

Mounting dimensions

Cutout diameter	9 1/4″
Mounting depth	6 7/8″
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

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.

Phoenix Gold Ti310D4 (Ti3, DVC 4 ohm) 0.46 ft³ sealed · 0.81 ft³ ported
Audiobahn AW1005N 0.42 ft³ sealed · 0.74 ft³ ported
Audiobahn AW1005Q 0.42 ft³ sealed · 0.74 ft³ ported
Rockville W10K9D2 0.49 ft³ sealed · 1.52 ft³ ported
Audiobahn AW1008Q 0.44 ft³ sealed · 0.78 ft³ ported
Audiobahn AW1008T 0.48 ft³ sealed · 0.78 ft³ ported

FAQ

What box does the Fi Audio Xv3 10 D1 need?

Recommended net volume: 0.51 ft³ sealed, 0.78 ft³ ported tuned to 46 Hz — for one sub in a sedan at 1,000 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the Fi Audio Xv3 10 D1 Thiele/Small specs?

Fs 34.6 Hz, Qts 0.48, Vas 0.44 ft³, Xmax 1.06″, Sd 48.1 in².

What is the Fi Audio Xv3 10 D1 mounting depth?

Mounting depth is 6 7/8″, 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 Xv3 10 D1 handle and how do I wire it?

RMS power rating: 1,000 W. Dual 1 Ω voice coils: series gives 2 Ω, parallel gives 0.5 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.