Conclusion: I put 4 of them in a 120qt cooler! Haha, they are being pushed by a dj marine 4 ch amp. Also bought from Sonic. They sound fantastic! With the crossover set at 80hz they jam hard with no distortion. I can hear them clearly over the boat motor all out, plus waves,plus my wife. Get these jbl's.
Conclusion: Excellent Speaker for the Money. The speaker covers on my Pioneer MR-1640 kept coming off underway on our 40ft sailboat, and eventually cracked and broke. It was less expensive to buy the JBl's. which were on sale at a very nice discount, than it was to buy new speaker covers from Pioneer.
Conclusion: Replaced the existing Sony radio because it was not working when I bought the boat pre-owned. I researched the radios and found a lot of consumers stating this model stops working consistently.
Conclusion: I chose these speakers based on the range specifications and price compared to other units. Very happy with my choice, these have excellent sound, even at relatively low volume. Very crisp and clean.