Speaker behind drivers seat

[johnz3]

The speaker behind the drivers seat 'vibrates' when the radio is on. Only when say reasonable loud or louder. The 'vibration' can be made to disappear if you lower the volume. Any ideas please.

[BladeRunner919]

Probably a blown speaker.

[lightning]

Fit a pair of Rockford Fosgate Prime.

Not too dear and really good sound. Don't buy the "Punch" which look similar, as they don't come with grilles.

[Southernboy]

"Blown speaker".......... Have you checked for a politician hid behind your seat.....