Okay, well i just got an Alpine CDA-9851, Type S components, and 6x9's in the rear with a MRP-F240 or w/e that 40x4 watt amp. So i turn it on, and it was installed by a professional and everything works great... it just happens when i turn the volume around 14 / 15 + it starts to cut off in parts of the song? i assume its to protect the speakers or something? or is it just a defect? and how do i get rid of it cause 15 isnt loud at all to me..? Whats the problem?