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Acoustical Room Treatment
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Fatmangolf View Drop Down
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Joined: 23 Dec 2009
Location: Middlesbrough
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Points: 9695 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Fatmangolf Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2014 at 7:14pm
Originally posted by Fatmangolf Fatmangolf wrote:

I assumed the ceiling's boarding/insulation construction tamed the modes of the almost square cross-section as well as giving valuable storage space above. The many shelves and boxes helped to diffuse the sound and avoid slap back echoes. Real rooms, real solutions.


That wasn't an accident. Graham, John, and Leo have more years experience designing and installing audio and hi-fi systems than I would have candles on my next birthday cake.
Jon

Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC.
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Fatmangolf View Drop Down
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Points: 9695 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Fatmangolf Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jul 2014 at 11:06pm
This waterfall graph below may help to explain things. It shows the slightly uneven response (it won't be flat with speakers in a room) and the rates of decay of the various frequencies. Despite the careful positioning of things in the room and bass trapping, you can see peaks that relate to the room dimensions e.g. 70Hz for my ceiling height and about 40Hz for my room's width and length, which is hard to absorb.

I used REW to measure and plot this. The mic isn't laboratory calibrated so don't worry about the stuff under 20Hz.
Jon

Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC.
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