SPL Dynamics SPL-460D2
18″ 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) | Flat and accurate · 0.67 |
|---|---|
| Fc | 53 Hz |
| F3 (−3 dB, no cabin gain) | 60 Hz |
| Example box (outside) | 19 11/16″ × 19 11/16″ × 12 7/8″ |
Ported
deeper, louder| Tuning (Fb) | 30 Hz |
|---|---|
| Port | slot 3 15/16 × 19 1/16″, 32 1/2″ long |
| Port velocity at 1,500 W | 62 ft/s |
| F3 (−3 dB, no cabin gain) | 28 Hz |
| Example box (outside) | 31 1/2″ × 20 1/2″ × 24″ |
Deeper: 3.71 ft³ (105 L) tuned to 33 Hz, 31 1/2″ × 20 1/2″ × 17 9/16″ 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 | 18″ |
|---|---|
| Voice coils | dual 2 Ω |
| RMS power | 1,500 W |
| Fs | 27.4 Hz |
| Qts | 0.35 |
| Qes | 0.38 |
| Qms | 3.77 |
| Vas | 5.24 ft³ |
| Re (one coil) | 1.9 Ω |
|---|---|
| Sd | 190.1 in² |
| Xmax | 0.45″ |
| Vd | 86.1 in³ calc. |
| Mms | 486 g calc. |
| BL | 20.4 T·m calc. |
| EBP | 72 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 91 dB calc. |
Mounting dimensions
| Cutout diameter | 16 11/16″ |
|---|---|
| Mounting depth | 10 7/16″ |
| Overall diameter | 18 1/2″ |
Cone area (Sd) calculated from Fs, Vas and Mms: 190.1 in².
“≈” 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 SPL Dynamics 18″ models
- SPL Dynamics SPL-460D1A 18″ · dual 1 Ω
Similar 18″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Deaf Bonce Apocalypse DB-4518R D1 2.88 ft³ sealed · 5.33 ft³ ported
- URAL Patriot 18 (2+2) 1.62 ft³ sealed · 5.33 ft³ ported
- Deaf Bonce Apocalypse DB-4518R D2 2.88 ft³ sealed · 5.33 ft³ ported
- Edge EDX18D1-E7 1.62 ft³ sealed · 5.33 ft³ ported
- Resilient Sounds Platinum 18 D1 2.14 ft³ sealed · 5.30 ft³ ported
- Pride T V.3 18 D2 1.92 ft³ sealed · 5.33 ft³ ported
FAQ
What box does the SPL Dynamics SPL-460D2 need?
Recommended net volume: 1.92 ft³ sealed, 5.62 ft³ ported tuned to 30 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 SPL Dynamics SPL-460D2 Thiele/Small specs?
Fs 27.4 Hz, Qts 0.35, Vas 5.24 ft³, Xmax 0.45″, Sd 190.1 in².
What is the SPL Dynamics SPL-460D2 mounting depth?
Mounting depth is 10 7/16″, cutout diameter 16 11/16″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the SPL Dynamics SPL-460D2 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.