Orion 2NT 15 SVC
15″ subwoofer · 4 Ω · also as 2NT 15 DVC (dual 4 Ω)
The Orion 2NT 15 SVC is a 15″ subwoofer. With Qts 0.28 and EBP 66 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder. Modest excursion (Xmax 0.41″) — for clean sound at moderate levels, not for SPL competitions.
| 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, 300 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 | 54 Hz |
| F3 (−3 dB, no cabin gain) | 52 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 9 1/4″ |
Ported
deeper, louder| Tuning (Fb) | 30 Hz |
|---|---|
| Port | slot 1 9/16 × 16 5/16″, 16″ long |
| Port velocity at 300 W | 54 ft/s |
| F3 (−3 dB, no cabin gain) | 34 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 16 7/16″ |
Deeper: 4.94 ft³ (140 L) tuned to 30 Hz, 31 1/2″ × 17 11/16″ × 20 1/2″ 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 | 4 Ω |
| RMS power | — |
| Fs | 19 Hz |
| Qts | 0.28 |
| Qes | 0.29 |
| Qms | 7.57 |
| Vas | 14.80 ft³ |
| Re | 4.2 Ω |
|---|---|
| Sd | 128 in² |
| Xmax | 0.41″ |
| Vd | 52.9 in³ calc. |
| Mms | 162 g calc. |
| BL | 16.7 T·m calc. |
| EBP | 66 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 92 dB calc. |
Mounting dimensions
| Cutout diameter | 13 7/8″ |
|---|---|
| Mounting depth | 6 3/4″ |
| Overall diameter | 15 1/2″ |
Where it fits in a vehicle
Spots from our vehicle guides where the cutout, mounting depth and recommended box fit. The spot sizes are approximate — measure your own vehicle.
- Excursion — behind the third row sealed box
“≈” 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
Voice coil versions
The same sub with different voice coils: the parameters are nearly the same — pick by your amp and wiring.
| Model | Voice coils | Re | Qes | Vas | Sealed | Ported |
|---|---|---|---|---|---|---|
| Orion 2NT 15 SVC | 4 Ω | 4.2 Ω | 0.29 | 14.80 ft³ | 2.05 ft³ | 3.78 ft³ · 30 Hz |
| Orion 2NT 15 DVC | dual 4 Ω | 3.3 Ω | 0.26 | 14.80 ft³ | 1.59 ft³ | 3.78 ft³ · 30 Hz |
Other Orion 15″ models
- Orion Cobalt 15 DVC (1999) 15″ · dual 4 Ω
- Orion Cobalt 15 DVC (original) 15″ · dual 4 Ω
- Orion Cobalt 15 SVC (1999) 15″ · 4 Ω
- Orion Cobalt 15 SVC (original) 15″ · 4 Ω
- Orion HCCA 15D 15″ · dual 2 Ω
- Orion HCCA 15D (1999) 15″ · dual 2 Ω
- Orion HCCA152 (HCCA 15" DVC 2ohm) 15″ · dual 2 Ω
- Orion HCCA152SPL (HCCA SPL 15" DVC 2ohm) 15″ · dual 2 Ω
- Orion HCCA154 (HCCA 15" DVC 4ohm) 15″ · dual 4 Ω
- Orion HCCA154SPL (HCCA SPL 15" DVC 4ohm) 15″ · dual 4 Ω
- Orion NT 15 DVC 15″ · dual 4 Ω
- Orion NT 15 SVC 15″ · 4 Ω
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Rockford Fosgate Punch XLC RFP-1415 (1996) 3.04 ft³ sealed · 3.96 ft³ ported
- Audiobahn AW1571X 2.61 ft³ sealed · 3.67 ft³ ported
- Dayton Audio DCS385-4 3.00 ft³ sealed · 6.00 ft³ ported
- Rockford Fosgate Power RFR2215 (2000) 2.19 ft³ sealed · 3.67 ft³ ported
- Kicker Comp 15" 8-Ohm SVC (C158) 3.04 ft³ sealed · 3.92 ft³ ported
- Earthquake Magma-15X 1.27 ft³ sealed · 4.10 ft³ ported
All 15″ subwoofers in our database →
FAQ
What box does the Orion 2NT 15 SVC need?
Recommended net volume: 2.05 ft³ sealed, 3.78 ft³ ported tuned to 30 Hz — for one sub in a sedan at 300 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Orion 2NT 15 SVC Thiele/Small specs?
Fs 19 Hz, Qts 0.28, Vas 14.80 ft³, Xmax 0.41″, Sd 128 in².
What is the Orion 2NT 15 SVC mounting depth?
Mounting depth is 6 3/4″, cutout diameter 13 7/8″. The inside depth of the box must exceed the mounting depth by at least 1″.
Is the Orion 2NT 15 SVC better sealed or ported?
EBP 66: both work — sealed 2.05 ft³ is tighter and smaller, ported 3.78 ft³ tuned to 30 Hz is deeper and louder.
What port does the Orion 2NT 15 SVC need?
For the 3.78 ft³ ported box tuned to 30 Hz: slot 1 9/16 × 16 5/16″, 16″ long, area 25.7 in²; or a round port Ø5 11/16″, ≈ 16″ long. Port air speed at 300 W: 54 ft/s.
What box do two Orion 2NT 15 SVC subs need?
Two subs need twice the volume: 4.10 ft³ sealed, or 7.56 ft³ ported at the same 30 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.