Fi Audio SSD NEO 15 D2
15″ subwoofer · dual 2 Ω · 1,500 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, 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| Bass character (Qtc) | Tight and punchy · 0.80 |
|---|---|
| Fc | 62 Hz |
| F3 (−3 dB, no cabin gain) | 59 Hz |
| Example box (outside) | 17 5/16″ × 17 5/16″ × 11 9/16″ |
Ported
deeper, louder| Tuning (Fb) | 34 Hz |
|---|---|
| Port | slot 2 3/8 × 16 11/16″, 40 1/8″ long |
| Port velocity at 1,500 W | 65 ft/s |
| F3 (−3 dB, no cabin gain) | 38 Hz |
| Example box (outside) | 25 1/16″ × 18 1/8″ × 15 15/16″ |
Deeper: 4.20 ft³ (119 L) tuned to 33 Hz, 31 1/2″ × 18 1/8″ × 21 5/8″ 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 | 15″ |
|---|---|
| Voice coils | dual 2 Ω |
| RMS power | 1,500 W |
| Fs | 37.5 Hz |
| Qts | 0.48 |
| Qes | 0.52 |
| Qms | 7.06 |
| Vas | 2.24 ft³ |
| Re (one coil) | 1.4 Ω |
|---|---|
| Sd | 125.6 in² |
| Xmax | 1.10″ |
| Vd | 138.4 in³ calc. |
| Mms | 264 g calc. |
| BL | 13 T·m calc. |
| EBP | 72 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 90.1 dB calc. |
Mounting dimensions
| Cutout diameter | 14 1/8″ |
|---|---|
| Mounting depth | 8 3/4″ |
| Overall diameter | 15 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
- web.archive.org/web/20190920055738/https://ficaraudio.com/product/ssd-neo-ssd10/
- web.archive.org/web/20190821134134/https://ficaraudio.com/product/ssd-neo-12/
Other Fi Audio 15″ models
- Fi Audio Alpha v1 15 S1 15″ · 1 Ω
- Fi Audio Alpha v1 15 S2 15″ · 2 Ω
- Fi Audio Alpha v1 15 S4 15″ · 4 Ω
- Fi Audio Alpha v2 15 S2 15″ · 2 Ω
- Fi Audio Alpha v2 15 S4 15″ · 4 Ω
- Fi Audio BL-NEO 15 D1 15″ · dual 1 Ω
- Fi Audio BL-NEO 15 D2 15″ · dual 2 Ω
- Fi Audio BL15 D1 15″ · dual 1 Ω
- Fi Audio BL15 D2 15″ · dual 2 Ω
- Fi Audio BL15v3 D1 15″ · dual 1 Ω
- Fi Audio BL15v3 D2 15″ · dual 2 Ω
- Fi Audio BL15v3.1 D1 15″ · dual 1 Ω
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Massive Audio H154X 1.27 ft³ sealed · 2.05 ft³ ported
- Machete MF-15R D4 1.31 ft³ sealed · 1.98 ft³ ported
- Machete MF-15R D2 1.20 ft³ sealed · 1.98 ft³ ported
- Sundown Audio SA Classic 15 D4 1.66 ft³ sealed · 3.50 ft³ ported
- Bomber Bicho Papão 2000W 2+2 Ohm (SW15BP-2000-2+2) 1.27 ft³ sealed · 2.05 ft³ ported
- Sundown Audio SA Classic 15 D2 1.20 ft³ sealed · 3.50 ft³ ported
FAQ
What box does the Fi Audio SSD NEO 15 D2 need?
Recommended net volume: 1.31 ft³ sealed, 2.01 ft³ ported tuned to 34 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 SSD NEO 15 D2 Thiele/Small specs?
Fs 37.5 Hz, Qts 0.48, Vas 2.24 ft³, Xmax 1.10″, Sd 125.6 in².
What is the Fi Audio SSD NEO 15 D2 mounting depth?
Mounting depth is 8 3/4″, 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 SSD NEO 15 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.