Ya everything's tight. Just think there should be foam between the speaker and cover...Did you check to make sure the mounting hardware is tight? Mine sounds good for what it is, no rattling here
I'm an audio snob and I think mine sounds great.Is it just me or does the alpine sub fuckin vibrate?? I thought it was blown but it just rattles so I lined the cover with soft foam, it's lessend the vibration but still there😒😒🤬 so annoying