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I have searched through the various threads on this and just have a couple of questions. Around the parameter of the speaker box would it be okay to use an 8mm rubber to help isolate the speaker from the frame? Also would it help to use this rubber on the top and bottom of the front soffit frame? I will attach pic of rubber. photo-30.JPG
Also in Johns design the speaker box is fixed to the front frame. In that drawing you can see the space left behind the speaker for it to breathe, does the front frame stay isolated from the back framing altogether? How big does the hole at the top of the soffit box need to be for air circulation? Would 2 to 3 inches be enough?photo.PNG
One last thing. As it has been mentioned the 824's have a switch that allow you to select the placement of the speaker within the room, but it also has a 80 hz cut. Would you recommend to engage this when soffit mounting or is that going to cut out to much of potential low end information? I work mostly with singer songwriter material. mackie.HR824.Rear.LRG.jpg
Thanks in advance for any help!Fra