or a new VP150, they have made many changes since your 150ti series to improve the performance/sound of the 150. Also, if you calibrate the speakers to the same SPL, using a meter, you might not notice this difference in levels.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85