Timpano TPT-T1500-10 D4

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

43 HzFs, resonance

0.59Qts

0.33 ft³Vas

0.63″Xmax

1,600 WRMS

Source	timpanoaudio.com · manufacturer data
Checked against source	October 2026
Thiele/Small parameters	not in the spec sheet: Sd — typical value for the size used
Mounting dimensions	0 of 4 — missing: cutout, mounting depth, frame outer diameter, 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

0.49 ft³ (14 L)

Net volume

Bass character (Qtc)	Flat and accurate · 0.76
Fc	55 Hz
F3 (−3 dB, no cabin gain)	54 Hz
Example box (outside)	12 3/16″ × 12 3/16″ × 9 11/16″

Open sealed box in designer

Ported

deeper, louder

0.85 ft³ (24 L)

Net volume

Tuning (Fb)	46 Hz
Port	2 round ports Ø3″, 18 3/4″ long
Port velocity at 1,600 W	176 ft/s
F3 (−3 dB, no cabin gain)	38 Hz
Example box (outside)	22 3/4″ × 15 3/4″ × 7 11/16″

At 1,600 W this example’s port will be noisy: air speed 176 ft/s, while the limit is 82 ft/s. It stays quiet up to about 340 W. Full power needs a port of at least 30.1 in², which means a bigger box than this example — size it in the designer.

Open ported box in designer

Deeper: 1.09 ft³ (31 L) tuned to 36 Hz, 28 1/2″ × 15 3/4″ × 7 11/16″ 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	10″
Voice coils	dual 4 Ω
RMS power	1,600 W
Fs	43 Hz
Qts	0.59
Qes	0.64
Qms	7.8

Vas	0.33 ft³
Re (one coil)	3.6 Ω
Sd	≈ 52.7 in²
Xmax	0.63″
EBP	67 — sealed or ported calc.
Sensitivity, 1 W / 1 m	82.6 dB calc.

Mounting dimensions

Cutout diameter	≈ 9 1/8″
Mounting depth	≈ 5 1/8″

“≈” 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

timpanoaudio.com/products/tpt-t1500-10-d4-10-inch-car-subwoofer

Other Timpano 10″ models

Timpano TPT-T1000-10 D4 10″ · dual 4 Ω
Timpano TPT-T2500-10 D2 10″ · dual 2 Ω

Similar 10″ subwoofers from other brands

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

DC Audio Level 4 10 D1 0.49 ft³ sealed · 0.85 ft³ ported
DC Audio Level 4 10 D2 0.49 ft³ sealed · 0.85 ft³ ported
DC Audio Level 4 10 D4 0.49 ft³ sealed · 0.85 ft³ ported
Skar Audio SVR-10 D4 0.46 ft³ sealed · 1.59 ft³ ported
SPL Dynamics SW-250D2 0.51 ft³ sealed · 0.78 ft³ ported
Skar Audio SVR-10 D2 0.46 ft³ sealed · 1.59 ft³ ported

FAQ

What box does the Timpano TPT-T1500-10 D4 need?

Recommended net volume: 0.49 ft³ sealed, 0.85 ft³ ported tuned to 46 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 Timpano TPT-T1500-10 D4 Thiele/Small specs?

Fs 43 Hz, Qts 0.59, Vas 0.33 ft³, Xmax 0.63″.

How much power does the Timpano TPT-T1500-10 D4 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.