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Hi Pantysniffers, I remember when I used to post on SNA, a discussion about dipole panels. I was arguing that the rear wave is unwanted, unplanned and destructive, others were claiming it added to the ambience or room effect or some other such rubbish. Anyway I just measured my ESLs which are 1m from a hard corner (gyprock) and the other with heavy curtain going around the corner. The Frequency plot of the first is a sawtooth, the other is smooth, flat. Ok, now to this thread..... I need to deal with the rear wave of the first ESL, so I am thinking of putting a DIY panel behind it- a framed batt. Now the specialist acoustic batts are a little steep $$ but the common old ceiling batts are more reasonable. Has anyone ever tried them ? Any idea of their range of (in)effectiveness? Any better suggestments or alternatives??