Features & specs
| Features and Specs | ||
|---|---|---|
| Size | 10-inch | |
| Impedance (Ohms) | 2, 8 | |
| Cone Material | Foam/Glass Fiber Sandwich | |
| Surround Material | Butyl Rubber | |
| Port diameter (inches) | 4 | |
| Port length (inches) | 21 | |
| Free-Air | No | |
| Dual Voice Coil | Yes | |
| Sensitivity | 87.5 dB at 2.83 volts 84.5 dB at 1 watt |
|
| Frequency Response | 25 - 800 Hz | |
| Max RMS Power Handling | 400 | |
| Peak Power Handling (Watts) | 800 | |
| Top Mount Depth (inches) | 4 5/16 | |
| Bottom Mount Depth (inches) | 4 11/16 | |
| Cutout Diameter or Length (inches) | 9 1/4 | |
| Frame Width | 10.63 | |
| Frame Length | 10.63 | |
| Vas (liters) | 28 | |
| Fs (Hz) | 31 | |
| Qts | 0.65 | |
| Xmax (millimeters) | 17 | |
| Parts Warranty | 1 Year | |
| Labor Warranty | 1 Year | |
| Box Requirements | ||
| Ideal Sealed Box Volume (cubic feet) | 1 | |
| Minimum Sealed Box Volume (cubic feet) | 0.35 | |
| Maximum Sealed Box Volume (cubic feet) | 1.2 | |
| Ideal Ported Box Volume (cubic feet) | 1.5 | |
| Minimum Ported Box Volume (cubic feet) | 1.1 | |
| Maximum Ported Box Volume (cubic feet) | 1.8 | |
Product Research
Features
TMD® Surround: The TMD® (Tuned Mass Damper) surround has a unique profile, designed to better control the effects of resonance and reduce the distortion associated with deformations of the cone.
Progressive Spider: The spider is designed to reproduce bass impact while optimizing linearity, precision, and dynamics.
Dual 4Ω Voice Coils: The dual 4Ω voice coils offer wiring flexibility; when wired in parallel the woofer presents a 2Ω load, when wired in series the woofer presents an 8Ω load.
Sealed Box: Focal recommends a sealed enclosure volume of 1.0 ft³, resulting in a -3 db point of 39 Hz. They also list the minimum volume as 0.35 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.
Ported Box: The recommended ported enclosure volume is 1.5 ft³ with a 4" diameter x 21" long port, which generates a -3 db point of 30 Hz. Ported (or vented) enclosures typically provide better overall efficiency than sealed, maximizing bass output for a given amplifier.
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