4) NEW BOSS MR6B 6.5" 360W Dual Cone Black Marine Audio Speakers 180 Watt 2 PAIR Total Power: 180 Watts per pair (360 Watts per 2 Pair) Voice Coil Material: Kapton and Cone Material: Poly CARBON Frequency Response: 80 Hz to 20 Hz SPL (1 Watt / 1 Meter): 89 dB Mounting Hole Depth: 2.1875