I know it is not an Airliner but..... the noisiest (and most beautiful) aircraft ever built was the stunning North American XB-70A Valkyrie. Had no less than 6 YJ93-GE-3 afterburning turbojets. 2 were built in the 60s when fuel was cheap and no one complained about noise. Go here for a look see..
http://www.dfrc.nasa.gov/Gallery/Photo/XB-70/