Focal 25A4 Sub Access Series 10 Inch 4 Ohm Single Voice Coil Subwoofer 200w RMS

Focal 25A4 Sub Access Series 10 Inch 4 Ohm Single Voice Coil Subwoofer 200w RMS

Focal 25A4

Access Series 10" 4-ohm subwoofer


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Product Information

Dream speakers

Perfect sound. Discreet style. Premium construction. These are the standards that define Focal – and that make listening to Focal speakers an absolute pleasure. The Access line offers a marriage of performance and affordability, allowing you to experience the best in sound with a guilt-free conscience.

Feel the bass

Bass gives your music fullness and texture. If you shortchange the bass, you're not hearing your music the way it's meant to be heard. This Focal Access Series 25A4 subwoofer uses an all-weather DFS (dual fiberglass structure) cone to deliver that depth of character you may be missing from your system. The cone's butyl rubber surround helps to ensure excellent strength, durability, and musical accuracy.

A unique ventilation system keeps the voice coil cool, allowing this sub to handle up to 200 watts RMS. Install this sub in a sealed box for tight, punchy bass, or in a ported enclosure for a little more boom.


  • Size    10 -inch
  • Impedance    4 ohms
  • Cone Material    DFS
  • Surround Material    Butyl Rubber
  • Ideal Sealed Box Volume (cubic feet)    N/A
  • Ideal Ported Box Volume (cubic feet)    N/A
  • Port diameter (inches)    3.5
  • Port length (inches)    13.75
  • Free-Air    No
  • Dual Voice Coil    No
  • Sensitivity    85.45 dB at 2.83 volts 
  • 82.45 dB at 1 watt 
  • Frequency Response    36 - 500 Hz
  • Max RMS Power Handling    200
  • Peak Power Handling (Watts)    400
  • Top Mount Depth (inches)    5
  • Bottom Mount Depth (inches)    N/A
  • Cutout Diameter or Length (inches)    9
  • Vas (liters)    49.85
  • Fs (Hz)    23.5
  • Qts    0.506
  • Xmax (millimeters)    8.5

What's Included

  • 10" Single voice coil woofer
  • Removable rubber mounting ring (installed)
  • Eight 7/8" Self-tapping screws
  • User manual (English/ French/ Russian)
  • Focal window sticker

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