| gee, sorry.would feel wary about making recommendations to anyone.
There is a bit of wiggle room in some of this. eg, flow in qrdude is given as half/design frequency. Going on that, it suggests a DF of 800 hz which equals 195mm.
However, Flow from that is also a bit of a guesstimate, 'just better diffusion than a bare wall' rather than TRUE diffusion, if you follow.
I guess eight inches is a reasonable compromise?? One thing I think that is agreed upon, the deeper the better if you can (within reason) as that gives the lowest possible design frequency (hence closer/more effective diffusion points in the range).
white glue is cheap and common, do a series of tests to see how good it is. I don't know personally. |