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It can be used as a pair on its own or combined with additional marine speakers and a compatible amplifier
5/8-Inch MDF Cabinet: Dense MDF construction provides a durable enclosure structure
The PMX-2 provides front and rear-or-subwoofer RCA preamp outputs for adding external amplification later
The four main channels use Class AB amplification
Its variable low-pass crossover operates from 50 Hz to 250 Hz
SoundXtreme ST-680 5x7/6x8" 3-Way Coaxial Speakers Crunch It can be used asThe SoundXtreme ST 680 is a pair of 5x7 6x8 inch 3 way coaxial car speakers designed as a practical replacement for worn or underperforming factory door or rear deck speakers. Their dual fit sizing is intended for vehicles that use either a 5x7 inch or 6x8 inch speaker opening. The pair uses a 4 ohm design for connection to compatible car audio systems. These speakers are suited to everyday listeners who want a straightforward full range speaker
