A mid-assortment speaker is a loudspeaker driver that reproduces a band of frequencies usually involving 1–six kHz, or else known as the mid frequencies (amongst the woofer and tweeter). Mid-array driver diaphragms is often product of paper or composite resources and may be immediate radiation motorists (rather like smaller woofers) https://speaker21729.thelateblog.com/30255510/little-known-facts-about-speaker