About the Focal 30A4

Highlights:
- 12" 4-ohm subwoofer
- dual fiberglass structure cone with butyl rubber surround
- high power 4-3/4" magnet
- spider decompression ventilated coil
- power handling: 50-250 watts RMS (500 watts peak)
- frequency response: 32-500 Hz
- sensitivity: 87 dB at 2.83 volts
- top-mount depth: 5-3/8"
- sealed box volume: 0.70-1.05 cubic feet
- ported box volume: 0.88-1.23 cubic feet
- grille not included
- warranty: 1 year
- MFR # 30A4
- Item # 09130A4
What's in the box:
- One 12" Single voice coil woofer
- Removable rubber mounting ring (installed)
- Eight 7/8" Self-tapping screws
- User manual (English/ French/ Russian)
- Focal window sticker
More details on the Focal 30A4

Features & specs
Features and Specs | ||
---|---|---|
Size | 12-inch | |
Impedance (Ohms) | 4 | |
Cone Material | DFS | |
Surround Material | Butyl Rubber | |
Basket Material | --- | |
Grille | None included | |
Free-Air | No | |
Dual Voice Coil | No | |
Sensitivity |
87 dB at 2.83 volts 84.18 dB at 1 watt | |
Frequency Response | 32 - 500 Hz | |
Max RMS Power Handling | 250 | |
Peak Power Handling (Watts) | 500 | |
Top Mount Depth (inches) | 5 3/4 | |
Bottom Mount Depth (inches) | N/A | |
Cutout Diameter or Length (inches) | 10 11/16 | |
Frame Width | 12.524 | |
Frame Length | 12.537 | |
Vas (liters) | 86.91 | |
Fs (Hz) | 24.7 | |
Qts | 0.671 | |
Xmax (millimeters) | 8.5 | |
Parts Warranty | 1 Year | |
Labor Warranty | 1 Year | |
Box Requirements | ||
Ideal Sealed Box Volume (cubic feet) | N/A | |
Minimum Sealed Box Volume (cubic feet) | 0.71 | |
Maximum Sealed Box Volume (cubic feet) | 1.06 | |
Ideal Ported Box Volume (cubic feet) | N/A | |
Minimum Ported Box Volume (cubic feet) | 0.88 | |
Maximum Ported Box Volume (cubic feet) | 1.36 | |
Port diameter (inches) | 3.5 | |
Port length (inches) | 13.75 |
Product Research
Features
Cone Material: The Dual Fiberglass Structure Membrane (DFS) is a light, rigid, woven glass fiber woofer cone. The butyl rubber surround is resistant to ultraviolet rays, temperature extremes, and humidity to add to the speaker's reliability and longevity.
Spring-Posts: The 30A4 uses spring-post speaker terminals for easy connection of single banana plugs, pin connectors, 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.
Sealed Box Volume: FOCAL recommends a sealed enclosure with a volume between 20 liters (0.71 cubic feet) and 30 liters (1.06 cubic feet).
Ported Box Volume: FOCAL recommends a ported enclosure with a volume between 25 liters (0.88 cubic feet) and 35 liters (1.24 cubic feet) using a single 3-1/2" diameter 13-3/4" long port tube.
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Customer Q&A
3 questions already asked
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Good price, good sub great brand.3
MrRoy from Loganville, GA