The Wharfedale Evo 4.S is a compact active subwoofer designed to complement the Evo 4 speaker range. It features a long-throw driver in a bass reflex enclosure with built-in amplification for deep, controlled bass extension in both stereo and home cinema systems.
| Type | Active subwoofer |
| Driver | 8 inch long-throw |
| Amplifier Power | 150W |
| Frequency Range | 30 Hz - 120 Hz |
