Audiobahn AW1571T
15″ subwoofer · dual 4 Ω · 500 W RMS
The Audiobahn AW1571T is a 15″ subwoofer. With Qts 0.49 and EBP 51 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder. Modest excursion (Xmax 0.43″) — for clean sound at moderate levels, not for SPL competitions.
| Source | web.archive.org · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | complete |
| Mounting dimensions | 3 of 4 — missing: magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 500 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 · 0.81 |
|---|---|
| Fc | 46 Hz |
| F3 (−3 dB, no cabin gain) | 44 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 11 3/4″ |
Ported
deeper, louder| Tuning (Fb) | 31 Hz |
|---|---|
| Port | slot 1 3/4 × 16 5/16″, 18 1/16″ long |
| Port velocity at 500 W | 62 ft/s |
| F3 (−3 dB, no cabin gain) | 31 Hz |
| Example box (outside) | 31 1/2″ × 17 11/16″ × 16″ |
Deeper: 4.70 ft³ (133 L) tuned to 32 Hz, 31 1/2″ × 17 11/16″ × 19 15/16″ 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 | 500 W |
| Fs | 28.2 Hz |
| Qts | 0.49 |
| Qes | 0.55 |
| Qms | 4.65 |
| Vas | 4.66 ft³ |
| Re (one coil) | 3.2 Ω |
|---|---|
| Sd | 120.9 in² |
| Xmax | 0.43″ |
| Vd | 52.4 in³ calc. |
| Mms | 208 g calc. |
| BL | 14.6 T·m calc. |
| EBP | 51 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 89.3 dB calc. |
Mounting dimensions
| Cutout diameter | 13 7/8″ |
|---|---|
| Mounting depth | 6 7/8″ |
| Overall diameter | 15 3/8″ |
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.
- Excursion — behind the third row sealed and ported 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
- web.archive.org/web/20060317155859/http://www.audiobahn.com/Audiobahn06/images/t
- web.archive.org/web/20060317160229/http://www.audiobahn.com/Audiobahn06/images/t
- web.archive.org/web/20060317161924/http://www.audiobahn.com/Audiobahn06/images/t
Other Audiobahn 15″ models
- Audiobahn ALUM15N 15″ · dual 6 Ω
- Audiobahn ALUM15Q 15″ · dual 6 Ω
- Audiobahn ALUM15X 15″
- Audiobahn AW150Q 15″
- Audiobahn AW150T 15″ · 4 Ω
- Audiobahn AW150XS 15″
- Audiobahn AW151T 15″ · 4 Ω
- Audiobahn AW152N 15″ · 4 Ω
- Audiobahn AW152T 15″
- Audiobahn AW1500N 15″
- Audiobahn AW1500Q 15″
- Audiobahn AW1500V 15″ · dual 4 Ω
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Pride Junior 15 D2 2.44 ft³ sealed · 3.46 ft³ ported
- Swat SBT-15 2.44 ft³ sealed · 3.46 ft³ ported
- Gladen RS 15 FA Free-Air (SVC 4 ohm) 2.93 ft³ sealed · 3.81 ft³ ported
- Kicker CompVR 15" 4-Ohm DVC (52CVR154) 2.54 ft³ sealed · 3.99 ft³ ported
- JBL W15GTi MkII 2.58 ft³ sealed · 3.57 ft³ ported
- Bomber Bicho Papão 1200W 4+4 Ohm (SW15BP-1200-4+4) 2.90 ft³ sealed · 3.74 ft³ ported
FAQ
What box does the Audiobahn AW1571T need?
Recommended net volume: 2.75 ft³ sealed, 3.57 ft³ ported tuned to 31 Hz — for one sub in a sedan at 500 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Audiobahn AW1571T Thiele/Small specs?
Fs 28.2 Hz, Qts 0.49, Vas 4.66 ft³, Xmax 0.43″, Sd 120.9 in².
What is the Audiobahn AW1571T mounting depth?
Mounting depth is 6 7/8″, cutout diameter 13 7/8″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Audiobahn AW1571T handle and how do I wire it?
RMS power rating: 500 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 Audiobahn AW1571T better sealed or ported?
EBP 51: both work — sealed 2.75 ft³ is tighter and smaller, ported 3.57 ft³ tuned to 31 Hz is deeper and louder.
What port does the Audiobahn AW1571T need?
For the 3.57 ft³ ported box tuned to 31 Hz: slot 1 3/4 × 16 5/16″, 18 1/16″ long, area 28.9 in²; or a round port Ø6 1/16″, ≈ 18 1/16″ long. Port air speed at 500 W: 62 ft/s.
What box do two Audiobahn AW1571T subs need?
Two subs need twice the volume: 5.51 ft³ sealed, or 7.13 ft³ ported at the same 31 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.