Fi Audio Q10 D2

10″ subwoofer · dual 2 Ω · 1,500 W RMS

34 HzFs, resonance

0.35Qts

0.42 ft³Vas

1.10″Xmax

1,500 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, 1,500 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

0.49 ft³ (14 L)

Net volume

Bass character (Qtc)	Dry and tight · 0.48
Fc	46 Hz
F3 (−3 dB, no cabin gain)	78 Hz
Example box (outside)	12 5/8″ × 12 5/8″ × 9 1/8″

Open sealed box in designer

Ported

deeper, louder

1.41 ft³ (40 L)

Net volume

Tuning (Fb)	37 Hz
Port	slot 2 9/16 × 14 5/16″, 45 11/16″ long
Port velocity at 1,500 W	79 ft/s
F3 (−3 dB, no cabin gain)	32 Hz
Example box (outside)	20 3/16″ × 15 3/4″ × 18 1/2″

Open ported box in designer

Deeper: 0.92 ft³ (26 L) tuned to 35 Hz, 17 15/16″ × 15 3/4″ × 9 1/16″ 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 2 Ω
RMS power	1,500 W
Fs	34 Hz
Qts	0.35
Qes	0.37
Qms	7.38
Vas	0.42 ft³

Re (one coil)	1.4 Ω
Sd	48.1 in²
Xmax	1.10″
Vd	53 in³ calc.
Mms	253 g calc.
BL	14.3 T·m calc.
EBP	92 — sealed or ported calc.
Sensitivity, 1 W / 1 m	83 dB calc.

Mounting dimensions

Cutout diameter	9 1/4″
Mounting depth	6 1/2″
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/20151209015328/http://www.ficaraudio.com:80/product/q-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.

CT Sounds MESO-10 D2 0.55 ft³ sealed · 0.74 ft³ ported
DD Audio 710g D2 0.62 ft³ sealed · 1.38 ft³ ported
DD Audio 710g D4 0.62 ft³ sealed · 1.38 ft³ ported
Rockville PUNISHER 10D2 0.58 ft³ sealed · 1.52 ft³ ported
Sundown Audio SAv2-10 D4 0.53 ft³ sealed · 1.02 ft³ ported
Sundown Audio Zv4-10 D1 0.79 ft³ sealed · 1.73 ft³ ported

FAQ

What box does the Fi Audio Q10 D2 need?

Recommended net volume: 0.49 ft³ sealed, 1.41 ft³ ported tuned to 37 Hz — for one sub in a sedan at 1,500 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the Fi Audio Q10 D2 Thiele/Small specs?

Fs 34 Hz, Qts 0.35, Vas 0.42 ft³, Xmax 1.10″, Sd 48.1 in².

What is the Fi Audio Q10 D2 mounting depth?

Mounting depth is 6 1/2″, 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 Q10 D2 handle and how do I wire it?

RMS power rating: 1,500 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.