I have an 2-channel amp Alpine MRV-F1507 powering one sub. I recently blew my sub and replaced it with a brand new sub but still no sound.
I have 3 status indicators on the amp: 1. PROTECTION 2. MUSIC 3.POWER. The protection and music indicators are both green but i have a constant RED light for the Power indicator. According to the manual it means i have a blown fuse or a poor battery connection. I replaced the fuse and checked the voltage. Readings were fine, 12.5 with the car off and 14.4v when running.