Zetta Audio X-12 EVO 1600

12″ subwoofer · dual 4 Ω · 1,600 W RMS

Specs

27 HzFs

0.32Qts

1.59 ft³Vas

0.71″Xmax

All Thiele/Small parameters ↓

Weight & fit

≈ 5 7/8″Mounting depth

11 7/16″Cutout

1,600 WRMS · dual 4 Ω

Mounting drawing ↓

Box size

0.71 ft³ sealedoutside 14 9/16″ × 14 9/16″ × 9 9/16″ · F3 65 Hz

2.30 ft³ ported, 30 Hz31 1/2″ × 15 3/4″ × 17 9/16″ · port: slot 3 1/8 × 14 5/16″, 52 7/8″ long

Box details and plans ↓

The Zetta Audio X-12 EVO 1600 is a 12″ subwoofer. With Qts 0.32 and EBP 81 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder.

Open ported box in designer Open sealed box in designer

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, 1,600 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

0.71 ft³ (20 L)

Net volume

Bass character (Qtc)	Dry and tight · 0.58
Fc	49 Hz
F3 (−3 dB, no cabin gain)	65 Hz
Example box (outside)	14 9/16″ × 14 9/16″ × 9 9/16″

Open sealed box in designer

Ported

deeper, louder

2.30 ft³ (65 L)

Net volume

Tuning (Fb)	30 Hz
Port	slot 3 1/8 × 14 5/16″, 52 7/8″ long
Port velocity at 1,600 W	75 ft/s
F3 (−3 dB, no cabin gain)	28 Hz
Example box (outside)	31 1/2″ × 15 3/4″ × 17 9/16″

Open ported box in designer

Deeper: 1.48 ft³ (42 L) tuned to 29 Hz, 31 1/2″ × 15 3/4″ × 11″ outside — a bigger box with flatter deep bass. Open in the calculator

Where to buy Amazon

Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Size	12″
Voice coils	dual 4 Ω
RMS power	1,600 W
Fs	27 Hz
Qts	0.32
Qes	0.334
Qms	7.35
Vas	1.59 ft³

Re (one coil)	3.5 Ω
Sd	77.3 in²
Xmax	0.71″
Vd	54.8 in³ calc.
Mms	272 g calc.
BL	22 T·m calc.
EBP	81 — sealed or ported calc.
Sensitivity, 1 W / 1 m	86.2 dB calc.

Mounting dimensions

Cutout diameter	11 7/16″
Mounting depth	≈ 5 7/8″
Overall diameter	12 9/16″

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.

Bronco 4-door — behind the rear seat sealed and ported box
Wrangler 4-door, hard top — behind the rear seat sealed and ported box
Wrangler 4-door, soft top — behind the rear seat sealed and ported box
Silverado / Sierra Crew Cab — under the rear seat sealed box
Spare tire well sealed box
FJ Cruiser — behind the rear seat sealed and ported box
El Camino 1978–87 — behind the seat sealed and ported box
Cherokee XJ — cargo area, spare moved out sealed and ported box
Excursion — behind the third row sealed and ported box
Mustang 2015–2023 coupe — trunk sealed and ported box
Challenger / Charger — trunk sealed and ported box
Club Car Precedent — under the rear seat 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

Other Zetta Audio 12″ models

Zetta Audio M-12 450 12″ · 4 Ω
Zetta Audio S-12 700 (4 Ohm) 12″ · 4 Ω
Zetta Audio V-12 950 (4 Ohm) 12″ · 4 Ω
Zetta Audio V-12 950 (4+4 Ohm) 12″ · dual 4 Ω
Zetta Audio V-12 EVO 1100 12″ · dual 4 Ω
Zetta Audio V-12 EVO 1200 12″ · dual 4 Ω
Zetta Audio X-12 1500 12″ · dual 4 Ω
Zetta Audio X-12 EVO 1800 12″ · dual 4 Ω

Similar 12″ subwoofers from other brands

Close in Fs, Qts and Vas — a box of similar volume will suit them.

Dayton Audio SS12-22 0.76 ft³ sealed · 2.44 ft³ ported
Dayton Audio MX12-22 0.74 ft³ sealed · 2.37 ft³ ported
Gladen SQX 12 Extreme (SVC 2 ohm) 0.71 ft³ sealed · 2.26 ft³ ported
Audio System X12 EVO 0.71 ft³ sealed · 2.26 ft³ ported
Dayton Audio RSS315HO-4 0.74 ft³ sealed · 1.52 ft³ ported
Elemental Designs e12A (2003) 0.67 ft³ sealed · 1.31 ft³ ported

All 12″ subwoofers in our database →

FAQ

What box does the Zetta Audio X-12 EVO 1600 need?

Recommended net volume: 0.71 ft³ sealed, 2.30 ft³ ported tuned to 30 Hz — for one sub in a sedan at 1,600 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.

What are the Zetta Audio X-12 EVO 1600 Thiele/Small specs?

Fs 27 Hz, Qts 0.32, Vas 1.59 ft³, Xmax 0.71″, Sd 77.3 in².

How much power does the Zetta Audio X-12 EVO 1600 handle and how do I wire it?

RMS power rating: 1,600 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 X-12 EVO 1600 better sealed or ported?

EBP 81: both work — sealed 0.71 ft³ is tighter and smaller, ported 2.30 ft³ tuned to 30 Hz is deeper and louder.

What port does the Zetta Audio X-12 EVO 1600 need?

For the 2.30 ft³ ported box tuned to 30 Hz: slot 3 1/8 × 14 5/16″, 52 7/8″ long, area 45.1 in²; or a round port Ø7 9/16″, ≈ 52 7/8″ long. Port air speed at 1,600 W: 75 ft/s.

What box do two Zetta Audio X-12 EVO 1600 subs need?

Two subs need twice the volume: 1.41 ft³ sealed, or 4.59 ft³ ported at the same 30 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.