What's the easiest way to tell if the two subwoofers under the seats are working as they should? I tried playing some bass sounds, but I couldn't see the subwoofer moving at all. I have the bass setting on 9 from the beginning, but I never felt any bass under me and can only feel the bass from the door woofers. It's been the same since I got the car, by the way. So I'm just trying to know if they're working or not. My Stinger is the GT-Line with the Harman Kardon sound system.
No sound from subwoofers?
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Thanks! I don't know why I never thought of placing something on it
MerlintheMad
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Ah, the dollar bill test. I was worried too, until I placed a bill on the sub and turned on a YouTube bass test video. The bill leaped right off the sub. 
The floor subs are designed to use the floor of the car as a sounding board but you won't actually feel anything through the floor. The door subs vibrate with abandon, being mounted in flexible door cards, after all.
The floor subs are designed to use the floor of the car as a sounding board but you won't actually feel anything through the floor. The door subs vibrate with abandon, being mounted in flexible door cards, after all.
