I installed the system myself... The system never cut out at all until after a few weeks ago, one of my speakers went bad and I had to send it back to Wet Sounds and they replaced the Woofer and the driver. Ever since I got it back, it now will cut out on some songs if I have it turned up the 42 on my deck, which goes up to 50 (42 is as high as I turn my deck up to). When it cuts out, the Tower speakers go quiet for about 3 seconds and then come back on. After it cuts out I usually just would walk over to my boat and turn the deck down to about 39 and it wouldn't cut out again, and after a few songs I would walk over and turn it back up to 42 and it would play again for a while before it cut out again, and I would do the process all over again. I just read in the manual that when it cuts out that that light on the amp should do something, but have never watched it before. The next time I go out I will be sure to watch it to see what it does. My system has never been tuned by someone who knows what they are doing, but I tried to pay my local Wet Sounds dealer to tune it, and he listened to the boat and told me I didnt need to pay him anything, because he thought it sounded great and he couldnt do anything to it that I hadnt already done.
My system consists of:
2 - 8G31 AGM Deep Cycle DEKA Industrial batteries
Sony cdx-h910ui head unit
WS420SQ
JL RCA 18 ft RCA wires
JL 1/0 Guage Power and ground to a JL Distribution block which distributes to two 4 guage strands to an HT-6 and an SD-2
HT-6 Powers 4 Kicker KM-654LC 6.5 inch speakers on channels 1-4, using generic 16 gauge marine speaker wire from West marine, channel 5 and 6 is bridged to power a WS FS10FA using WS Wet Wire, 14 guage I believe.
SD-2 is powering 4 WS REV8's using a 4 conductor tower wiring kit that was purchased from Earmark Marine.
I have a Minn Kota - 345PC charger that I plug in at a dock every night after being at the sand bar all day. I turn the Battery selector switch to 1 to isolate the batteries from each other so they both get fully charged.
My Tower speakers dont cut out all the time, its only on some songs. I think it cut out on "Uma Thurman" on Labor Day, when I had only been at the sand bar for about an hour or so, but I do believe I forgot to turn my battery selection switch to "both", but I still would think that one battery should power it for an hour without any cutting out. I also just reinstalled my WS Sub Woofer, because one that I had installed previously the wire somehow broke at the solder joint on the negative terminal and the Sub stopped working, and it was replaced under warranty by my dealer.
My system is very loud, at my local Sand Bar there may be one or two boats that are as loud as mine. Most boats turn their radios off when I am there or request for me to link up with them so we can play the same music. I just assumed that the amp was getting hot and that it was a normal result, running it as hard as I run it. I will be taking the boat out again this weekend so hopefully I can duplicate the issue and find out the cause.
I will check all of my battery connections to ensure they are all tight. The key factor is if the tower speakers cut out again, I should watch the amp to see what warning it is sending out.