Fi Audio TEAM v2 15 (3″ VC) D2

15″ subwoofer · dual 2 Ω · 2,500 W RMS

32.5 HzFs, resonance
0.22Qts
2.31 ft³Vas
1.34″Xmax
2,500 WRMS
Sourceweb.archive.org · manufacturer data
Checked against sourceOctober 2026
Thiele/Small parameterscomplete
Mounting dimensions3 of 4 — missing: magnet diameter; the designer will use an estimate

Recommended box

For a sedan, one sub, 2,500 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
1.59 ft³ (45 L)
Net volume
Bass character (Qtc)Dry and tight · 0.35
Fc51 Hz
F3 (−3 dB, no cabin gain)130 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 13 1/2″
Open sealed box in designer

Ported

deeper, louder
3.71 ft³ (105 L)
Net volume
Tuning (Fb)34 Hz
Portslot 5 1/2 × 16 11/16″, 49 7/16″ long
Port velocity at 2,500 W65 ft/s
F3 (−3 dB, no cabin gain)114 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 24 9/16″
Open ported box in designer

Deeper: 2.40 ft³ (68 L) tuned to 31 Hz, 31 1/2″ × 18 1/8″ × 16 1/4″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size15″
Voice coilsdual 2 Ω
RMS power2,500 W
Fs32.5 Hz
Qts0.22
Qes0.23
Qms7.18
Vas2.31 ft³
Re (one coil)1.8 Ω
Sd125.6 in²
Xmax1.34″
Vd168.1 in³ calc.
Mms341 g calc.
BL23.3 T·m calc.
EBP141 — suits ported calc.
Sensitivity, 1 W / 1 m91.9 dB calc.

Mounting dimensions

Ø15 5/8″cutout Ø14 1/8″mounting depth 11″magnet Ø≈ 9 3/16″
Cutout diameter14 1/8″
Mounting depth11″
Overall diameter15 5/8″

“≈” 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 15″ models

Similar 15″ subwoofers from other brands

Close in Fs, Qts and Vas — a box of similar volume will suit them.

FAQ

What box does the Fi Audio TEAM v2 15 (3″ VC) D2 need?

Recommended net volume: 1.59 ft³ sealed, 3.71 ft³ ported tuned to 34 Hz — for one sub in a sedan at 2,500 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the Fi Audio TEAM v2 15 (3″ VC) D2 Thiele/Small specs?

Fs 32.5 Hz, Qts 0.22, Vas 2.31 ft³, Xmax 1.34″, Sd 125.6 in².

What is the Fi Audio TEAM v2 15 (3″ VC) D2 mounting depth?

Mounting depth is 11″, cutout diameter 14 1/8″. The inside depth of the box must exceed the mounting depth by at least 1″.

How much power does the Fi Audio TEAM v2 15 (3″ VC) D2 handle and how do I wire it?

RMS power rating: 2,500 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.