About the Focal P 20 FSE

Product highlights:
- Featured in our articles: Best shallow-mount car subwoofers for 2025 and Best 8" car subwoofers for 2025
- 8" 4-ohm component subwoofer
- shallow-mount design
- glass fiber/flax/glass fiber laminate cone with rubber surround
- power handling: 200 watts RMS (400 watts peak)
- frequency response: 35-400 Hz
- sensitivity: 86 dB
- top-mount depth: 3"
- sealed box volume: 0.21-0.38 cubic feet
- grille not included
- warranty: 1 year
- MFR # P20FSE
- Item # 091SUBP20S
What's in the box:
- One 8" Shallow mount single voice coil subwoofer
- Rubber trim ring/gasket (installed)
- Six 7/8" Screws
- User manual (English/ French/ German/ Italian/ Spanish/ Portuguese/ Dutch/ Polish/ Russian/ Chinese/ Korean/ Japanese)
- Specifications printed on the box
More details on the Focal P 20 FSE

Features & specs
Features and Specs | ||
---|---|---|
Size | 8-inch | |
Impedance (Ohms) | 4 | |
Cone Material | Flax/Glass | |
Surround Material | Rubber | |
Basket Material | Steel | |
Grille | None included | |
Free-Air | No | |
Dual Voice Coil | No | |
Sensitivity |
86 dB at 2.83 volts | |
Frequency Response | 35 - 400 Hz | |
Max RMS Power Handling | 200 | |
Peak Power Handling (Watts) | 400 | |
Top Mount Depth (inches) | 3 | |
Bottom Mount Depth (inches) | N/A | |
Cutout Diameter or Length (inches) | 7 3/16 | |
Frame Width | 8.375 | |
Frame Length | 8.375 | |
Vas (liters) | 9 | |
Fs (Hz) | 35 | |
Qts | 1.3 | |
Xmax (millimeters) | 11 | |
Parts Warranty | 1 Year | |
Labor Warranty | 1 Year | |
Box Requirements | ||
Ideal Sealed Box Volume (cubic feet) | 0.28 | |
Minimum Sealed Box Volume (cubic feet) | 0.21 | |
Maximum Sealed Box Volume (cubic feet) | 0.38 | |
Ideal Ported Box Volume (cubic feet) | N/A | |
Minimum Ported Box Volume (cubic feet) | N/A | |
Maximum Ported Box Volume (cubic feet) | N/A | |
Port diameter (inches) | N/A | |
Port length (inches) | N/A |
Product Research
Features
Cone: The woofer cone is a sandwich design, with a flax center between two glass layers. This combination of materials results in a neutral sound without coloration.
Surround: The rubber surround is resistant to ultraviolet rays, temperature extremes, and humidity to add to the speaker's reliability and longevity.
Spring-Posts: The spring-post speaker terminals offer easy connection of single banana plugs or bare wire up to 10 gauge.
Rubber Gasket: The gasket/mounting-ring ensures better chassis damping and prevents air leakage. The rubber gasket is removable.
Enclosure: Focal recommends a sealed enclosure volume of 0.28 ft³ (examples are given from 0.21 ft³ to 0.32 ft³). Sealed enclosures provide the most control over a woofer, will handle a lot of power, and provide accurate sonic reproduction, making them suitable for all types of music.
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Customer Q&A
5 questions already asked
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Installed as a replacement for the factory sub in my 2018 Honda Ridgeline. Tremendous improvement over the stock sub. High quality materials and construction. Very satisfied with the Focal product and will definitely swap the other factory speakers with a Focal product.
Tracy from Clyde, OH