ok thank you ,i'll get a handle on this yet,lol does the size or the driver have any thing to do with the sound or output ,other then lows.i know a single 3.5" driver is not going to put out as much sound or spl as a 5.25" or 6.5" even , but i would be moving the same cone space on my speakers ,weather its the 3.5" or 5.25" ,just more or less drivers to make up the 84". so back to my question if size matters?