Zetta Audio V-15 1300
15″ subwoofer · dual 4 Ω · 1,300 W RMS
The Zetta Audio V-15 1300 is a 15″ subwoofer. With Qts 0.52 and EBP 63 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder.
| Source | zettaaudio.com.br · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 2 of 4 — missing: mounting depth, magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 1,300 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) | 51 Hz |
| Example box (outside) | 18 1/8″ × 18 1/8″ × 11 1/16″ |
Ported
deeper, louder| Tuning (Fb) | 34 Hz |
|---|---|
| Port | slot 2 3/16 × 17 1/2″, 39 3/16″ long |
| Port velocity at 1,300 W | 65 ft/s |
| F3 (−3 dB, no cabin gain) | 33 Hz |
| Example box (outside) | 31 1/2″ × 18 7/8″ × 12 1/16″ |
Deeper: 4.34 ft³ (123 L) tuned to 30 Hz, 31 1/2″ × 18 7/8″ × 21 1/8″ 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 4 Ω |
| RMS power | 1,300 W |
| Fs | 35 Hz |
| Qts | 0.52 |
| Qes | 0.555 |
| Qms | 7.97 |
| Vas | 1.91 ft³ |
| Re (one coil) | 4.2 Ω |
|---|---|
| Sd | 124.6 in² |
| Xmax | 0.63″ |
| Vd | 78.5 in³ calc. |
| Mms | 351 g calc. |
| BL | 24.2 T·m calc. |
| EBP | 63 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 88.2 dB calc. |
Mounting dimensions
| Cutout diameter | 14 15/16″ |
|---|---|
| Mounting depth | ≈ 7 1/16″ |
| Overall diameter | 15 3/8″ |
“≈” 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
- zettaaudio.com.br/wp-content/uploads/2026/07/Manual-Subwoofer-Zetta-Audio-V-15.p
- zettaaudio.com.br/suporte/manuais/
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Rockville DESTROYER 15D2 1.57 ft³ sealed · 1.94 ft³ ported
- Sundown Audio SAv2-15 D2 1.38 ft³ sealed · 3.00 ft³ ported
- Fi Audio Alpha v1 15 S1 1.62 ft³ sealed · 2.01 ft³ ported
- Fi Audio Alpha v1 15 S2 1.62 ft³ sealed · 2.01 ft³ ported
- Fi Audio Alpha v1 15 S4 1.62 ft³ sealed · 2.01 ft³ ported
- Rockville DESTROYER 15D1 1.57 ft³ sealed · 1.94 ft³ ported
All 15″ subwoofers in our database →
FAQ
What box does the Zetta Audio V-15 1300 need?
Recommended net volume: 1.38 ft³ sealed, 1.98 ft³ ported tuned to 34 Hz — for one sub in a sedan at 1,300 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Zetta Audio V-15 1300 Thiele/Small specs?
Fs 35 Hz, Qts 0.52, Vas 1.91 ft³, Xmax 0.63″, Sd 124.6 in².
How much power does the Zetta Audio V-15 1300 handle and how do I wire it?
RMS power rating: 1,300 W. Dual 4 Ω voice coils: series gives 8 Ω, parallel gives 2 Ω at the amp. Wiring for several subs and amp power — in the wiring calculator.
Is the Zetta Audio V-15 1300 better sealed or ported?
EBP 63: both work — sealed 1.38 ft³ is tighter and smaller, ported 1.98 ft³ tuned to 34 Hz is deeper and louder.
What port does the Zetta Audio V-15 1300 need?
For the 1.98 ft³ ported box tuned to 34 Hz: slot 2 3/16 × 17 1/2″, 39 3/16″ long, area 37.9 in²; or a round port Ø6 15/16″, ≈ 39 3/16″ long. Port air speed at 1,300 W: 65 ft/s.
What box do two Zetta Audio V-15 1300 subs need?
Two subs need twice the volume: 2.75 ft³ sealed, or 3.96 ft³ ported at the same 34 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.