Audiobahn ALUM15X
15″ subwoofer · 1,100 W RMS
| 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, 1,100 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 | 34 Hz |
| F3 (−3 dB, no cabin gain) | 32 Hz |
| Example box (outside) | 31 1/2″ × 18 1/8″ × 11 3/4″ |
Ported
deeper, louder| Tuning (Fb) | 30 Hz |
|---|---|
| Port | slot 2 3/4 × 16 11/16″, 31 5/8″ long |
| Port velocity at 1,100 W | 64 ft/s |
| F3 (−3 dB, no cabin gain) | 27 Hz |
| Example box (outside) | 31 1/2″ × 18 1/8″ × 18 1/8″ |
Deeper: 4.80 ft³ (136 L) tuned to 25 Hz, 31 1/2″ × 18 1/8″ × 23″ 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 | 1,100 W |
| Fs | 20.7 Hz |
| Qts | 0.49 |
| Qes | 0.54 |
| Qms | 4.98 |
| Vas | 4.77 ft³ |
|---|---|
| Re | 5.5 Ω |
| Sd | ≈ 124 in² |
| Xmax | 0.75″ |
| EBP | 38 — suits sealed calc. |
| Sensitivity, 1 W / 1 m | 85.5 dB calc. |
Mounting dimensions
| Cutout diameter | 14″ |
|---|---|
| Mounting depth | 7 1/4″ |
| 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 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
- Audiobahn AW1500X 15″
Similar 15″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Rockford Fosgate Punch P3D2-15 3.14 ft³ sealed · 2.40 ft³ ported
- Dayton Audio MX15-22 1.91 ft³ sealed · 3.78 ft³ ported
- JL Audio 15W0v3-4 2.79 ft³ sealed · 2.75 ft³ ported
- URAL Decibel 15 (1+1) 1.91 ft³ sealed · 3.18 ft³ ported
- Ground Zero GZRW 15D4 (2x4 Ohm) 2.37 ft³ sealed · 3.67 ft³ ported
- Orion XTR154D / XTR15D4 (XTR 15" DVC 4ohm) 2.58 ft³ sealed · 3.00 ft³ ported
FAQ
What box does the Audiobahn ALUM15X need?
Recommended net volume: 2.83 ft³ sealed, 3.67 ft³ ported tuned to 30 Hz — for one sub in a sedan at 1,100 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Audiobahn ALUM15X Thiele/Small specs?
Fs 20.7 Hz, Qts 0.49, Vas 4.77 ft³, Xmax 0.75″.
What is the Audiobahn ALUM15X mounting depth?
Mounting depth is 7 1/4″, cutout diameter 14″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Audiobahn ALUM15X handle and how do I wire it?
RMS power rating: 1,100 W. Wiring for several subs and amp power — in the wiring calculator.