Orion Cobalt 15 DVC (original)
15″ subwoofer · dual 4 Ω
| 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 |
- Fs, Vas and Sd give a moving mass of 101 g — unusual for a 15″; check Vas against the spec sheet.
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) | Boomy, with a bump · 0.95 |
|---|---|
| Fc | 61 Hz |
| F3 (−3 dB, no cabin gain) | 52 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 12 3/8″ |
Ported
deeper, louder| Tuning (Fb) | 31 Hz |
|---|---|
| Port | slot 1 9/16 × 16 5/16″, 14 11/16″ long |
| Port velocity at 300 W | 43 ft/s |
| F3 (−3 dB, no cabin gain) | 42 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 16 3/8″ |
Deeper: 4.94 ft³ (140 L) tuned to 41 Hz, 31 1/2″ × 17 11/16″ × 19 13/16″ 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 | 15″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | — |
| Fs | 28 Hz |
| Qts | 0.44 |
| Qes | 0.5 |
| Qms | 3.55 |
| Vas | 10.91 ft³ |
| Re (one coil) | 3.55 Ω |
|---|---|
| Sd | 128 in² |
| Xmax | 0.25″ |
| Vd | 31.7 in³ calc. |
| Mms | 101 g calc. |
| BL | 11.2 T·m calc. |
| EBP | 56 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 93.3 dB calc. |
Mounting dimensions
| Cutout diameter | 13 7/8″ |
|---|---|
| Mounting depth | 6 3/4″ |
| Overall diameter | 15 1/2″ |
“≈” 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 Orion 15″ models
- Orion 2NT 15 DVC 15″ · dual 4 Ω
- Orion 2NT 15 SVC 15″ · 4 Ω
- Orion Cobalt 15 DVC (1999) 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
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- JBL P1500 3.21 ft³ sealed · 4.17 ft³ ported
- Soundstream USA15 2.83 ft³ sealed · 3.88 ft³ ported
- Audiopipe TS-AR15 2.83 ft³ sealed · 3.67 ft³ ported
- Gladen M 15 (SVC 4 ohm) 2.93 ft³ sealed · 3.81 ft³ ported
- Elemental Designs 16Ov.2 2.40 ft³ sealed · 3.99 ft³ ported
- Kicker Comp 15" 8-Ohm SVC (C158) 3.04 ft³ sealed · 3.92 ft³ ported
FAQ
What box does the Orion Cobalt 15 DVC (original) need?
Recommended net volume: 2.93 ft³ sealed, 3.78 ft³ ported tuned to 31 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 Cobalt 15 DVC (original) Thiele/Small specs?
Fs 28 Hz, Qts 0.44, Vas 10.91 ft³, Xmax 0.25″, Sd 128 in².
What is the Orion Cobalt 15 DVC (original) 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″.