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Author Topic: DIY sound absorption panels Dan Chilton Expert Film Handler Posts: 191 From: Springfield, MO Registered: Mar 2004 posted 03-03-2008 04:34 PM                        Has anyone had experience building their own sound panels to cut the echo in an all concrete screening room? What type of material will deliver the best results for the least amount of money? I've heard good defenses for covered rockwool insulation slabs, as well as canvas covered MDF board. Any other suggestions?  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 03-03-2008 04:48 PM                       The canvas covering or burlap works well. So does short pile carpeting glued to the wall about half way up. Then trim with scattered canvas panels. Leave some exposed concrete wall sections on the sides, of course, as you don't want it totally dead.  |  IP: Logged Cameron Glendinning Jedi Master Film Handler Posts: 845 From: West Ryde, Sydney, NSW Australia Registered: Dec 2005 posted 03-03-2008 04:59 PM                     Well the first question is are the speakers installed properly? The Horn loaded design of the typical cinema speaker if installed and angled properly, can in many situations, stop the refections off the walls before they even start. Personally I have used black tissue faced fiberglass duct liner aprox 3.2 kilos per square metre, hung a few inches off the wall. (ie air gap behind is good). As most cinemas have the most audio reflection problems backstage, I tend to put the fiberglass there, not in the auditorium. To break up sound and early reflections all that is needed is random 3d patterns and angles. Speakers aimed at flat surfaces tend to cause the bounce problems.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 03-03-2008 06:18 PM                        Made out own covering in London, Ky using "duct liner" (see above) 100% coverage above 40". Louis  |  IP: Logged Blake Zaugg Film Handler Posts: 57 From: Lafayette, LA Registered: Sep 2002 posted 04-04-2008 12:14 AM                     We did this at a theatre I was at previously. The frame was 2x4's and then just regular insulation inside, covered with fabric. Was surprising the difference it made. Fabric had to be special non-flamable type.  |  IP: Logged

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