Audiobahn AW1500X
15″ subwoofer · 800 W RMS
The Audiobahn AW1500X is a 15″ subwoofer. With Qts 0.47 and EBP 52 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder. Modest excursion (Xmax 0.55″) — for clean sound at moderate levels, not for SPL competitions.
| Source | web.archive.org · manufacturer data |
|---|---|
| Checked against source | October 2026 |
| Thiele/Small parameters | not in the spec sheet: Sd — typical value for the size used |
| Mounting dimensions | 3 of 4 — missing: 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) | Tight and punchy · 0.80 |
|---|---|
| Fc | 46 Hz |
| F3 (−3 dB, no cabin gain) | 44 Hz |
| Example box (outside) | 17 5/16″ × 17 5/16″ × 14 7/16″ |
Ported
deeper, louder| Tuning (Fb) | 30 Hz |
|---|---|
| Port | slot 1 15/16 × 16 11/16″, 32 1/8″ long |
| Port velocity at 800 W | 61 ft/s |
| F3 (−3 dB, no cabin gain) | 30 Hz |
| Example box (outside) | 31 1/2″ × 18 1/8″ × 13 7/8″ |
Deeper: 4.80 ft³ (136 L) tuned to 27 Hz, 31 1/2″ × 18 1/8″ × 21 13/16″ 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 | — |
| RMS power | 800 W |
| Fs | 27.2 Hz |
| Qts | 0.47 |
| Qes | 0.52 |
| Qms | 4.7 |
| Vas | 3.32 ft³ |
|---|---|
| Re | 3.2 Ω |
| Sd | ≈ 124 in² |
| Xmax | 0.55″ |
| EBP | 52 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 87.6 dB calc. |
Mounting dimensions
| Cutout diameter | 14″ |
|---|---|
| Mounting depth | 7 1/8″ |
| Overall diameter | 15 1/2″ |
“≈” 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 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.
- Soundstream T5-15 (2009) 1.66 ft³ sealed · 2.40 ft³ ported
- Alpine SWS-15D2 (Type-S) 2.12 ft³ sealed · 3.04 ft³ ported
- Polk Audio MM1540 2.33 ft³ sealed · 2.83 ft³ ported
- Polk Audio MM1540DVC 2.33 ft³ sealed · 2.83 ft³ ported
- Rockford Fosgate Power T115D4 (2004) 2.19 ft³ sealed · 2.51 ft³ ported
- Magnum MBW 15-22SF 2.01 ft³ sealed · 3.04 ft³ ported
FAQ
What box does the Audiobahn AW1500X need?
Recommended net volume: 1.73 ft³ sealed, 2.65 ft³ ported tuned to 30 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 Audiobahn AW1500X Thiele/Small specs?
Fs 27.2 Hz, Qts 0.47, Vas 3.32 ft³, Xmax 0.55″.
What is the Audiobahn AW1500X mounting depth?
Mounting depth is 7 1/8″, cutout diameter 14″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Audiobahn AW1500X handle and how do I wire it?
RMS power rating: 800 W. Wiring for several subs and amp power — in the wiring calculator.
Is the Audiobahn AW1500X better sealed or ported?
EBP 52: both work — sealed 1.73 ft³ is tighter and smaller, ported 2.65 ft³ tuned to 30 Hz is deeper and louder.
What port does the Audiobahn AW1500X need?
For the 2.65 ft³ ported box tuned to 30 Hz: slot 1 15/16 × 16 11/16″, 32 1/8″ long, area 32.9 in²; or a round port Ø6 7/16″, ≈ 32 1/8″ long. Port air speed at 800 W: 61 ft/s.
What box do two Audiobahn AW1500X subs need?
Two subs need twice the volume: 3.46 ft³ sealed, or 5.30 ft³ ported at the same 30 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.