Timpano TPT-TSUB12 D4
12″ subwoofer · dual 4 Ω · 800 W RMS
| Source | timpanoaudio.com · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | not in the spec sheet: Re, Sd — typical value for the size used |
| Mounting dimensions | 2 of 4 — missing: frame outer diameter, magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 800 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 · 1.35 |
|---|---|
| Fc | 55 Hz |
| F3 (−3 dB, no cabin gain) | 40 Hz |
| Example box (outside) | 14 9/16″ × 14 9/16″ × 18 11/16″ |
Ported
deeper, louder| Tuning (Fb) | 34 Hz |
|---|---|
| Port | slot 1 9/16 × 14 5/16″, 39 9/16″ long |
| Port velocity at 800 W | 65 ft/s |
| F3 (−3 dB, no cabin gain) | 34 Hz |
| Example box (outside) | 21 3/4″ × 15 3/4″ × 13 3/8″ |
Deeper: 2.93 ft³ (83 L) tuned to 37 Hz, 31 1/2″ × 15 3/4″ × 16 9/16″ 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 | 12″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 800 W |
| Fs | 45 Hz |
| Qts | 1.11 |
| Qes | 1.23 |
| Qms | 10.88 |
| Vas | 0.81 ft³ |
|---|---|
| Re (one coil) | ≈ 3.4 Ω |
| Sd | ≈ 76 in² |
| Xmax | 0.59″ |
| EBP | 37 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 84.3 dB calc. |
Mounting dimensions
| Cutout diameter | 11 1/4″ |
|---|---|
| Mounting depth | 6 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
Other Timpano 12″ models
- Timpano TPT-T1000-12 D4 12″ · dual 4 Ω
- Timpano TPT-T1500-12 D4 12″ · dual 4 Ω
- Timpano TPT-T2500-12 D4 12″ · dual 4 Ω
- Timpano TPT-T3500-12 D2 12″ · dual 2 Ω
Similar 12″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- DD Audio 1512d D2 1.55 ft³ sealed · 1.20 ft³ ported
- DD Audio 1512d D4 1.55 ft³ sealed · 1.20 ft³ ported
- BOSS Audio P120F 1.73 ft³ sealed · 1.24 ft³ ported
- Audio System R12 FA EVO 1.77 ft³ sealed · 1.24 ft³ ported
- Rockford Fosgate Power T1S2-12 (Slim) 1.98 ft³ sealed · 1.38 ft³ ported
- Swat SW R12D4 1.73 ft³ sealed · 1.20 ft³ ported
FAQ
What box does the Timpano TPT-TSUB12 D4 need?
Recommended net volume: 1.62 ft³ sealed, 1.20 ft³ ported tuned to 34 Hz — for one sub in a sedan at 800 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Timpano TPT-TSUB12 D4 Thiele/Small specs?
Fs 45 Hz, Qts 1.11, Vas 0.81 ft³, Xmax 0.59″.
What is the Timpano TPT-TSUB12 D4 mounting depth?
Mounting depth is 6 1/8″, cutout diameter 11 1/4″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Timpano TPT-TSUB12 D4 handle and how do I wire it?
RMS power rating: 800 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.