Polk Audio EX10 (EX Series II)
10″ subwoofer · 4 Ω · 150 W RMS
The Polk Audio EX10 (EX Series II) is a 10″ subwoofer. With Qts 0.45 and EBP 68 it works both sealed and ported: sealed is tighter and smaller, ported is deeper and louder. Modest excursion (Xmax 0.18″) — 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 | 2 of 4 — missing: frame outer diameter, magnet diameter; the designer will use an estimate |
Recommended box
For a sedan, one sub, 150 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 | 57 Hz |
| F3 (−3 dB, no cabin gain) | 54 Hz |
| Example box (outside) | 12 3/16″ × 12 3/16″ × 13 3/8″ |
Ported
deeper, louder| Tuning (Fb) | 36 Hz |
|---|---|
| Port | slot 1 9/16 × 14 5/16″, 32 11/16″ long |
| Port velocity at 150 W | 30 ft/s |
| F3 (−3 dB, no cabin gain) | 35 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 9 1/8″ |
Deeper: 2.05 ft³ (58 L) tuned to 33 Hz, 31 1/2″ × 15 3/4″ × 11 1/2″ 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 | 10″ |
|---|---|
| Voice coils | 4 Ω |
| RMS power | 150 W |
| Fs | 32.5 Hz |
| Qts | 0.45 |
| Qes | 0.48 |
| Qms | 8.27 |
| Vas | 1.57 ft³ |
|---|---|
| Re | 3.34 Ω |
| Sd | ≈ 52.7 in² |
| Xmax | 0.18″ |
| EBP | 68 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 87 dB calc. |
Mounting dimensions
| Cutout diameter | 9 1/16″ |
|---|---|
| Mounting depth | 4 3/4″ |
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
- Ram Crew Cab — under the rear seat sealed and ported box
- Tacoma Double Cab — under the rear seat sealed and ported box
- Tacoma Access Cab — behind the front seats sealed 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
- 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 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 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
Other Polk Audio 10″ models
- Polk Audio db104 10″ · 4 Ω
- Polk Audio db104DVC 10″ · dual 4 Ω
- Polk Audio db1040 10″ · 4 Ω
- Polk Audio db1040DVC 10″ · dual 4 Ω
- Polk Audio dX10-4 10″ · 4 Ω
- Polk Audio dX10-8 10″ · 8 Ω
- Polk Audio DXi104 DVC 10″ · dual 4 Ω
- Polk Audio DXi104 SVC 10″ · 4 Ω
- Polk Audio GXR104 10″ · 4 Ω
- Polk Audio MM100-4 10″ · 4 Ω
- Polk Audio MM104 (Polk/MOMO) 10″ · 4 Ω
- Polk Audio MM1040 10″ · 4 Ω
Similar 10″ subwoofers from other brands
Close in Fs, Qts and Vas — a box of similar volume will suit them.
- URAL AS-D10.3D2 (2+2) 0.85 ft³ sealed · 1.31 ft³ ported
- Ground Zero GZIW 250X (4 Ohm) 0.67 ft³ sealed · 1.24 ft³ ported
- Machete M10 D4 0.60 ft³ sealed · 1.06 ft³ ported
- Alpine SWA-10S4 (Atom) 0.53 ft³ sealed · 1.17 ft³ ported
- Gladen Zero 10 Pro (SVC 4 ohm) 0.81 ft³ sealed · 1.34 ft³ ported
- PowerBass S-1004 0.49 ft³ sealed · 1.52 ft³ ported
FAQ
What box does the Polk Audio EX10 (EX Series II) need?
Recommended net volume: 0.74 ft³ sealed, 1.27 ft³ ported tuned to 36 Hz — for one sub in a sedan at 150 W. Fit the box to your space and amp in the free calculator, with plans and a cut sheet.
What are the Polk Audio EX10 (EX Series II) Thiele/Small specs?
Fs 32.5 Hz, Qts 0.45, Vas 1.57 ft³, Xmax 0.18″.
What is the Polk Audio EX10 (EX Series II) mounting depth?
Mounting depth is 4 3/4″, cutout diameter 9 1/16″. The inside depth of the box must exceed the mounting depth by at least 1″.
How much power does the Polk Audio EX10 (EX Series II) handle and how do I wire it?
RMS power rating: 150 W. Wiring for several subs and amp power — in the wiring calculator.
Is the Polk Audio EX10 (EX Series II) better sealed or ported?
EBP 68: both work — sealed 0.74 ft³ is tighter and smaller, ported 1.27 ft³ tuned to 36 Hz is deeper and louder.
What port does the Polk Audio EX10 (EX Series II) need?
For the 1.27 ft³ ported box tuned to 36 Hz: slot 1 9/16 × 14 5/16″, 32 11/16″ long, area 22.6 in²; or a round port Ø5 3/8″, ≈ 32 11/16″ long. Port air speed at 150 W: 30 ft/s.
What box do two Polk Audio EX10 (EX Series II) subs need?
Two subs need twice the volume: 1.48 ft³ sealed, or 2.54 ft³ ported at the same 36 Hz tuning with twice the port area. One shared chamber or one per sub — whatever fits your vehicle.