Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

ok so i put some new speakers in the doors the other day they sound very nice and went in easy enuff but now my doors rattle like mad with the sound of the bass ive checked the waterproff membrain n the door its sealed all the way round and ive tightened up all the screws on the door card and door pocket but its still doing it is there anything in the mechanics of the door that could work its way lose and vibrate/rattle and if so can it be tightened?

It's probably the door frame and door skin. Corsa's have very little sound deadening and the panels flex with the bass, get some dynamat or equivalent, stick it on the inside of the door skin and that should reduce it for you.