Rockford Fosgate M5-800X4 4-Channel Marine Amplifier Tweeters a pair is needed for

a pair is needed for normal stereo left/right installation

An aluminum shorting ring is used to reduce inductance in the motor assembly

Gravity specifies an advanced air-flow cooling system for the G3-15D2

and bass-boost settings organized after setup

Rockford Fosgate M5-800X4 4-Channel Marine Amplifier Tweeters a pair is needed forThe Rockford Fosgate M5 800X4 is a compact four channel amplifier designed for marine, motorcycle, and powersports audio systems. It provides dedicated amplification for up to four full range speakers while using an Element Ready design suited to exposed installations. Its compact chassis helps solve mounting challenges where space is limited. This amplifier is intended for riders, boaters, and off road enthusiasts building a powered speaker system