I need 5 hours working the sub, i know tone test is very diferent to real music audio data and i know there is peaks in data music and nominal data in music ,i am trying to find how much is too much power and how much is a waste for the sub , i have never used 6 inch voice coils in subs and never have used 2000 rms subs ,in the past i aleays used 4 inch voice coils for 18 inch subs and crown macrotech 2400 , now im using crown itech 9000 in mono for 2 21 inch subs