I have my 4 HLCD on a separate 2 channel 1000 watt kicker amp (should be plenty of power). Last night we rode for about 3.5 hours total. The amp never thermaled & didn’t seem overly hot too the touch. We were getting enough battery power due to the running boat. Every so often my speakers would let out an “air horn” noise during the music. I actually thought one of the fellow tubers was blowing an air horn at me but found it to be the speakers. I did find out I had a faulty speaker wire connection at the amp. Once I get the connection lined out I hope it clears this “horn” sound up. I’ve never heard of this can you provide any input as to why they would do this. I’m new to the HLCD technology. Thanks


P.S. I have my whole system (3 amps) on 3 different switches. So I turned my towers off & turned only the cabin speakers on they seemed fine so I dont think its the deck.