This is an Altec Lansing ATP4 4 + subwoofer speaker system I have used it for a few years attached to my office PC but have decided that I dont need anything so sophisicated to listen to the normal clicks and bumps from my computer. The sub woofer measures approx 46 cms long x 21 cms wide and 27 cms high. The mains lead is fixed to this and all the satellite sspeakers attach to this using colour coded plugs for each speaker. The location for each speaker is printed on the back. The satellite speakers all measure approx 24 cms high and stand on an 11 cm diameter base. Looking closely at these speakers I think the base holds a downward facing woofer and there are 2 tweeters in the column. The right front speaker has all the controls for different modes, vulume, bass, treble and on-off button. Condition is very good with a small number of minor scuffs. I have taken lots of pictures to show all these details. These can be used for most stereo sources such as PC, laptop, TV stereo radio etc. This is all very heavy so is best collected from my home in Cold Ashby, Northamptonshire. If that is not possible I could pack it into a large box which would be quite heavy so postage would be by Parcel Force in UK only for £12.50