The MPro MP418S is a compact,

single eighteen inch subwoofer in a

bass reflex enclosure. It is designed

to supplement and extend the lowfrequency

output of full-range

systems in a variety of portable and

fixed applications. Achieving the

power and performance

characteristics of the MP418S requires

the use of a woofer with very high

motor strength - the JBL 2241. This

woofer uses VGC (Vented Gap

Cooling) an exclusive JBL technology

that greatly reduces the loss of output

resulting from power compression