I have 2 sets of M650's coming in the mail tomorrow, they haven't even been delivered yet, but I already got one pair in that I installed, and noticed the other 2 pairs in my boat are 7.5's. So I know that these next 2 pairs aren't going to fit. My mistake is your gain.
•6-1/2" JL Audio Marine M Series 2-Way Speakers
◦Peak: 300 watts per pair / 150 watts each
◦RMS: 150 watts per pair / 75 watts each
•Injection-molded mica-filled polypropylene cone
•Dust cap profile engineered for smooth upper-end response
•Synthetic fiber spider with progressive roll design and made specifically for marine applications
•Synthetic rubber surrounds
•UV-resistant polymer baskets encapsulate motor structure
•1" Silk dome diaphragm tweeter
•Ferrofluid-cooled and damped tweeter for improved response and power handling
•Tweeter/supertweeter size and type (if any)
•True two-way crossover with 1st order low-pass filter and 2nd order high-pass filter
•4 ohms impedance
•Frequency Response: 55-25,000 Hz
•Top-mount depth: 3"
•Desgined for free-air application
•Not designed for small enclosures
•Color is White
•Includes the Classic grills
$240.00 for each pair..
$450.00 for the 2 pairs..