As above I am looking for a subwoofer to match the dynamics of b&w dm601 s2 pair I already have. It will be primarily for stereo audio, not home theatre. Ideally something fast and punchy..so I am thinking 10" driver, sealed enclosure and I do not want to break the bank. £200 or less. It will be run of a Cyrus 3 psxr combo. Thanks in advance for any advice. Room is 5x5m.