I have a 5watt amp that sounds great through my marshall tv 4x12 w/greenbacks. I would like to make a 1x12 cab or combo with a 25w greenback that sounds similar for this amp. Is the air space the reason this cab sounds so good? Can a single 12 cab have that same tone as the big guy? I was thinking of dividing the volume of the 4 x 12 cab by 4 and building a 1x12 cab that way. Any thoughts?