1999 mustang gt mach 460 sound system has sound coming from all speakers but not bass only treble whats wrong?

Question

Only treble is coming from all of the speakers. This is normal via the tweeters but the door and back speakers lack bass and only play treble....please help

Answer 1

they could be blown, or the amp might be fried and not sending enough juice. Check connections from amp if there is one.

Answer 2

if this is a convertible most likely the right amplifier in the trunk is burn  sometimes water gets in there  before you pull it out check the woofer  with a meter they are 2 ohms

good luck