I have an old Carvin 4X12 with 70 or 75 watt celestions. (or the carvin imitation P) I'm thinking about getting rid of it and getting a Mesa 2X12 with Vintage 30s and a closed back. Will I loose "something" by going the 2X12 route. Besides two less speakers P. Any opinions on 2X12 vs 4X12 in general? I really don't want a Mesa 4X12 because I don't need it, and its insanely heavy. (150 pounds) Any opinions or comments are welcome!