Audiobahn AW800X
8″ subwoofer · 300 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, 300 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) | Dry and tight · 0.57 |
|---|---|
| Fc | 53 Hz |
| F3 (−3 dB, no cabin gain) | 71 Hz |
| Example box (outside) | 10 1/4″ × 10 1/4″ × 9 1/4″ |
Ported
deeper, louder| Tuning (Fb) | 39 Hz |
|---|---|
| Port | slot 1 9/16 × 14 5/16″, 36 3/16″ long |
| Port velocity at 300 W | 49 ft/s |
| F3 (−3 dB, no cabin gain) | 34 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 8 1/8″ |
Deeper: 0.64 ft³ (18 L) tuned to 36 Hz, 17 13/16″ × 15 3/4″ × 6 7/8″ 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 | 8″ |
|---|---|
| Voice coils | — |
| RMS power | 300 W |
| Fs | 35.8 Hz |
| Qts | 0.39 |
| Qes | 0.42 |
| Qms | 4.7 |
| Vas | 0.39 ft³ |
|---|---|
| Re | 3.2 Ω |
| Sd | ≈ 33.3 in² |
| Xmax | 0.47″ |
| EBP | 85 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 82.8 dB calc. |
Mounting dimensions
| Cutout diameter | 7 1/4″ |
|---|---|
| Mounting depth | 4 3/8″ |
| Overall diameter | 8 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 8″ models
- Audiobahn ALUM8P 8″
- Audiobahn AW800Q 8″
- Audiobahn AW831Q 8″
- Audiobahn AW831SE 8″
- Audiobahn AW831T 8″ · dual 4 Ω
- Audiobahn AW831X 8″
Similar 8″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- Rockford Fosgate Punch HE2 RFP4208 0.28 ft³ sealed · 0.92 ft³ ported
- Focal Slatefiber SUB 20 SF (SVC 4 ohm) 0.28 ft³ sealed · 0.92 ft³ ported
- Rockford Fosgate Punch HE2 RFP4108 0.28 ft³ sealed · 0.92 ft³ ported
- Rockford Fosgate Punch HE2 RFP2208 (2000) 0.32 ft³ sealed · 0.99 ft³ ported
- Elemental Designs e8A 0.32 ft³ sealed · 0.53 ft³ ported
- Infinity Kappa 800W 0.32 ft³ sealed · 0.53 ft³ ported
FAQ
What box does the Audiobahn AW800X need?
Recommended net volume: 0.32 ft³ sealed, 0.99 ft³ ported tuned to 39 Hz — for one sub in a sedan at 300 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Audiobahn AW800X Thiele/Small specs?
Fs 35.8 Hz, Qts 0.39, Vas 0.39 ft³, Xmax 0.47″.
What is the Audiobahn AW800X mounting depth?
Mounting depth is 4 3/8″, cutout diameter 7 1/4″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Audiobahn AW800X handle and how do I wire it?
RMS power rating: 300 W. Wiring for several subs and amp power — in the wiring calculator.