Kenwood KFC-XW10
10″ subwoofer · 4 Ω
Fs 33 HzQts 0.57Vas 1.81 ft³Xmax 0.29″
The published specs don’t add up:
- Fs, Vas and Sd don't match the moving mass of 167.3 g (they give 74 g) — one of the spec sheet values is probably wrong.
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
| Net volume | 1.20 ft³ (34 L) |
|---|---|
| Qtc | 0.90 |
| Fc | 52 Hz |
| F3 (−3 dB, no cabin gain) | 46 Hz |
| Example box (outside) | 12 3/16″ × 12 3/16″ × 20 3/16″ |
Ported
| Net volume | 2.05 ft³ (58 L) |
|---|---|
| Tuning (Fb) | 37 Hz |
| Port | slot 1 9/16 × 14 5/16″, 17 9/16″ long |
| Port velocity at 300 W | 57 ft/s |
| F3 (−3 dB, no cabin gain) | 33 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 11 1/8″ |
Thiele/Small parameters
| Fs | 33 Hz |
|---|---|
| Qts | 0.57 |
| Qes | 0.59 |
| Qms | 14.85 |
| Vas | 1.81 ft³ |
| Re | 3.1 Ω |
| Sd | ≈ 52.7 in² |
| Xmax | 0.29″ |
| EBP | 56 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 87 dB calc. |
General
| Size | 10″ |
|---|---|
| Voice coils | 4 Ω |
| RMS power | — |
Mounting dimensions
| Cutout diameter | ≈ 9 1/8″ |
|---|---|
| Mounting depth | 5 13/16″ |
The spec sheet's Sd of 79.1 in² is the area of a 10″ circle, not the cone's radiating area — not used.
“≈” 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 Kenwood 10″ models
- Kenwood KFC-PS2516W 10″ · 4 Ω
- Kenwood KFC-W2513PS 10″ · 4 Ω
- Kenwood KFC-XW1000F 10″ · 4 Ω