B5 A4 Bose Audio Issues

[justinp95]

Mine does it too.

[dcc236]

If you've replaced the speaker with a new stock one, the next items to check are the head unit and Bose amp.
If you want to replace the h/u, they're rather cheap from the likes of ECS, ie. less than $50.
If it's still faulty, the Bose amp is playing up. You could try tracking down a used one, they regularly come up for sale in the classifieds.