Infinity Reference REF507F Speakers Powersport Source Units MAXI fuse set screws require

MAXI fuse set screws require 3 mm Allen wrench

uncluttered user interface with big text and large backlit controls

Superior audio performance with the DB Drive WDX PRO8000

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Designed for versatility and durability

Infinity Reference REF507F Speakers Powersport Source Units MAXI fuse set screws requireProduct info: 5 1 4" 2 way speakers (pair) Plus One+ polypropylene woofer cone with hi roll rubber surround 1 2" textile balanced dome tweeter True Four Ohm Impedance technology speaker's 3 ohm impedance combines with speaker wire impedance for a 4 ohm load compatible with virtually all factory or aftermarket car stereos handles up to 45 watts RMS (135 watts peak power) frequency response: 67 21,000 Hz sensitivity: 92 dB at 2. 83V volts top mount