sorry to sound so ignorant on the subject, but i need some explaination of what exactly these two things are and what they mean to your speakers. the reason i ask is because i keep blowing my door speakers in my car. i have settings on my deck where i can change these two things, so i set it to where it sounds good to me. but evidently i am doing damage to my speakers. again, sorry to sound stupid, but i've got to find out if i am indeed killing my speakers because of the way i have my radio set. anybody care to explain? thanks in advance.