Timpano TPT-T1500-15 D4
15″ subwoofer · dual 4 Ω · 1,600 W RMS
| 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| Bass character (Qtc) | Boomy, with a bump · 1.00 |
|---|---|
| Fc | 48 Hz |
| F3 (−3 dB, no cabin gain) | 39 Hz |
| Example box (outside) | 31 1/2″ × 18 1/8″ × 11 3/4″ |
Ported
deeper, louder| Tuning (Fb) | 34 Hz |
|---|---|
| Port | slot 2 3/16 × 16 11/16″, 37 5/16″ long |
| Port velocity at 1,600 W | 63 ft/s |
| F3 (−3 dB, no cabin gain) | 35 Hz |
| Example box (outside) | 31 1/2″ × 18 1/8″ × 12 1/4″ |
Deeper: 4.80 ft³ (136 L) tuned to 33 Hz, 31 1/2″ × 18 1/8″ × 23 5/16″ 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 | 1,600 W |
| Fs | 36 Hz |
| Qts | 0.75 |
| Qes | 0.82 |
| Qms | 8.84 |
| Vas | 2.23 ft³ |
|---|---|
| Re (one coil) | 3.4 Ω |
| Sd | ≈ 124 in² |
| Xmax | 0.63″ |
| EBP | 44 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 87.6 dB calc. |
Mounting dimensions
| Cutout diameter | ≈ 14″ |
|---|---|
| Mounting depth | ≈ 7 1/16″ |
“≈” 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 Timpano 15″ models
- Timpano TPT-T2500-15 D4 15″ · dual 4 Ω
- Timpano TPT-T3500-15 D2 15″ · dual 2 Ω
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Quantum Audio QWX4000/15D4 2.83 ft³ sealed · 1.98 ft³ ported
- Memphis Car Audio MJP1522 (MOJO Pro 15" DVC 2ohm) 2.93 ft³ sealed · 2.05 ft³ ported
- Machete MF-15 D4 2.83 ft³ sealed · 1.98 ft³ ported
- Machete MF-15 D2 2.83 ft³ sealed · 2.01 ft³ ported
- Massive Audio GTX154 2.86 ft³ sealed · 2.01 ft³ ported
- B2 Audio IS15 D4 v3 2.83 ft³ sealed · 1.98 ft³ ported
FAQ
What box does the Timpano TPT-T1500-15 D4 need?
Recommended net volume: 2.83 ft³ sealed, 1.98 ft³ ported tuned to 34 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-T1500-15 D4 Thiele/Small specs?
Fs 36 Hz, Qts 0.75, Vas 2.23 ft³, Xmax 0.63″.
How much power does the Timpano TPT-T1500-15 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.