Hi guys. This has me baffled. When I installed a new head unit maybe 6 months ago my drivers speaker failed shortly after making only a tiny tinny sound. I then replaced the speaker for new pioneer aftermarket speaker. This made no difference and I have the exact same sound output. so I assumed wiring or head unit to fault. I have now installed a brand new head unit and also rewired the said speaker and it is still exactly the same very very quiet sound???? How is this possible as I now have a new head unit New wiring and a new speaker? Baffled.