Only one..Martin Audio S12 sub with 4" voicecoil and handles up to 400 watt RMS. Weight 20kg very good condition hardly used so it has to go.
New approx £540
£220 collected or £235 delivered by courier in UK.

http://proaudiostash.co.uk/product/audio/speakers/martin-audio-blackline/blackline-s12/1256.shtml