Mackie has unveiled its new SRMv2 portable active loudspeakers that boast new Class-D Fast Recovery amplifiers. The SRM350v2 and SRM450v2 speakers both feature a switching power supply as well as new transducers, while the SRM450v2 includes a neodymium woofer with a 3-inch voice coil and titanium compression driver. Lighter than the original SRM sp