During the focused R&D period of perfecting the PRO-X line, DS18 identified the opportunity to spawn off another line since there was a division amongst competition audiophiles and concert/"voceteo" audiophiles.
Therefore, DS18 created the PRO-X audio line, which features a wide variety of midranges that produce concert-like sounds that will knock the wind out of you!
DS18's most sold series of High Powered pro audio now offered in SLIM so you can fit them in most tight spaces.
Great DS18 design of high durability parts including strong ferrite magnet, pressed paper cone, and CCA voice coils to get you maximum loudness with great sound quality.
BM stands for BULLET! This includes a resonator (tweeter) with red bullet design to give the speaker a much higher range of frequencies.