JBL MA754 4-Channel Marine Amplifier 5x7 Inch Speakers and the equipment's signal-level requirements

and the equipment's signal-level requirements before connecting devices

Out of the box

while the subwoofer channel uses Class D amplification

The speaker's specified frequency response is 89 Hz to 20 kHz

JBL MA754 4-Channel Marine Amplifier 5x7 Inch Speakers and the equipment's signal-level requirementsThe JBL MA754 is a four channel marine amplifier designed to add controlled, full range power to a boat audio system. It provides four channels for front and rear marine speakers, with the option to bridge channel pairs for compatible 4 ohm subwoofer applications. Its compact footprint helps solve installation challenges where available mounting space is limited. At 14. 4V, the MA754 delivers 75 watts RMS to each of four 4 ohm channels, or 100 watts