Audiobahn AW800Q
8″ subwoofer · 300 W RMS
The Audiobahn AW800Q is a 8″ subwoofer. With Qts 0.28 and EBP 97 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder.
| 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, 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 · 0.49 |
|---|---|
| Fc | 51 Hz |
| F3 (−3 dB, no cabin gain) | 84 Hz |
| Example box (outside) | 10 1/4″ × 10 1/4″ × 8 1/2″ |
Ported
deeper, louder| Tuning (Fb) | 32 Hz |
|---|---|
| Port | slot 1 × 14 5/16″, 38 5/8″ long |
| Port velocity at 300 W | 66 ft/s |
| F3 (−3 dB, no cabin gain) | 30 Hz |
| Example box (outside) | 13″ × 15 3/4″ × 16 5/16″ |
Deeper: 0.57 ft³ (16 L) tuned to 30 Hz, 31 1/2″ × 15 3/4″ × 14 5/16″ 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 | 8″ |
|---|---|
| Voice coils | — |
| RMS power | 300 W |
| Fs | 29 Hz |
| Qts | 0.28 |
| Qes | 0.3 |
| Qms | 3.81 |
| Vas | 0.60 ft³ |
| Re | 4 Ω |
|---|---|
| Sd | 30.4 in² |
| Xmax | 0.47″ |
| Vd | 14.4 in³ calc. |
| Mms | 96 g calc. |
| BL | 15.3 T·m calc. |
| EBP | 97 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 83.4 dB calc. |
Mounting dimensions
| Cutout diameter | 7 1/4″ |
|---|---|
| Mounting depth | 4 3/8″ |
| Overall diameter | 8 1/2″ |
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.
- F-150 SuperCrew — under the rear seat sealed and ported box
- F-150 regular cab — behind the seat sealed and ported box
- Ram Crew Cab — under the rear seat sealed and ported box
- Ram regular cab — behind the seat sealed and ported box
- Tacoma Double Cab — under the rear seat sealed and ported box
- Tacoma Access Cab — behind the front seats sealed and ported box
- Bronco 4-door — behind the rear seat sealed and ported box
- Wrangler 4-door, hard top — behind the rear seat sealed and ported box
- Wrangler 4-door, soft top — behind the rear seat sealed and ported box
- Silverado / Sierra Crew Cab — under the rear seat sealed and ported box
- Silverado / Sierra regular cab — behind the seat sealed and ported box
- Spare tire well sealed box
- Polaris RZR / Ranger — under the seat sealed box
- Can-Am — under the seat sealed box
- Avalanche — under the rear seat sealed and ported box
- FJ Cruiser — behind the rear seat sealed and ported box
- El Camino 1978–87 — behind the seat sealed and ported box
- Cherokee XJ — cargo area, spare moved out sealed and ported box
- Excursion — behind the third row sealed and ported box
- Mustang 2015–2023 coupe — trunk sealed and ported box
- Challenger / Charger — trunk sealed and ported box
- Tesla Model 3 — well under the trunk floor sealed and ported box
- Club Car Precedent — under the rear seat 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/20060317161959/http://www.audiobahn.com/Audiobahn06/images/t
- web.archive.org/web/20050307032618/http://audiobahn.com/tech/2002/Sub%20Specs/Au
Other Audiobahn 8″ models
- Audiobahn ALUM8P 8″
- Audiobahn AW800X 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.
- Dayton Audio RSS210HO-8 0.32 ft³ sealed · 0.81 ft³ ported
- JBL GTO804 0.32 ft³ sealed · 0.53 ft³ ported
- Dayton Audio RSS210HO-4 0.32 ft³ sealed · 0.92 ft³ ported
- Infinity Reference 860W 0.32 ft³ sealed · 0.53 ft³ ported
- Ground Zero GZHW 8SPL-D2 FLAT (2x2 Ohm) 0.32 ft³ sealed · 0.53 ft³ ported
- Soundstream EXACT 8 0.28 ft³ sealed · 0.53 ft³ ported
FAQ
What box does the Audiobahn AW800Q need?
Recommended net volume: 0.28 ft³ sealed, 0.88 ft³ ported tuned to 32 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 AW800Q Thiele/Small specs?
Fs 29 Hz, Qts 0.28, Vas 0.60 ft³, Xmax 0.47″, Sd 30.4 in².
What is the Audiobahn AW800Q 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 AW800Q handle and how do I wire it?
RMS power rating: 300 W. Wiring for several subs and amp power — in the wiring calculator.
Is the Audiobahn AW800Q better sealed or ported?
EBP 97: both work — sealed 0.28 ft³ is tighter and smaller, ported 0.88 ft³ tuned to 32 Hz is deeper and louder.
What port does the Audiobahn AW800Q need?
For the 0.88 ft³ ported box tuned to 32 Hz: slot 1 × 14 5/16″, 38 5/8″ long, area 14.1 in²; or a round port Ø4 1/4″, ≈ 38 5/8″ long. Port air speed at 300 W: 66 ft/s.
What box do two Audiobahn AW800Q subs need?
Two subs need twice the volume: 0.57 ft³ sealed, or 1.77 ft³ ported at the same 32 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.