For a good looking sub-woofer that's there when needed and discreet when not, the Cambridge Audio S90 is the ideal choice. The S90 sub-woofer is the perfect match for the S30 and S70 speakers. Finished in smooth Graphite with a matching front panel, the S90 sub looks every bit as contemporary as the rest of the S-range. Packing a long-throw 8" bass cone, the S90 may be discreet and compact, but it can certainly pack a punch when needed - right the way down to 40Hz. The rigid cabinet is complemented by spiked feet, ensuring that the S90's bass doesn't stay or "overhang" a moment longer than it should do. Magnetic shielding makes it easy to place and safe from interfering with magnetically recorded data.