Pagel

I have a 2005 maxima and it has the 8 speaker bose system and the stock subwoofers will work fine and then all of the sudden they will pop a little bit then stop working. if i turn the radio down a little bit they will eventually turn back on. it will also do it when the radio isnt very loud! idk if i need to replace the amp or what the deal is. any input would be greatly appreciated. thank you