Polk 5.25" Coaxial Speaker 135 Watts max

5-1/4"; 2-way cars speakers (pair)
Dynamic Balance polymer/mica composite woofer with butyl rubber surround
3/4"; pivoting liquid-cooled silk/polymer composite dome tweeter
Neodymium tweeter magnet
Kapton voice coil
built-in 2-way crossover network
ABS wheel-design grilles
stainless steel mounting hardware
certified for marine use
power range: 4-45 watts RMS (135 watts peak power)
frequency response: 60-22,000 Hz
sensitivity: 93 dB
top-mount depth: 2-3/8";