wrapping

I built some QRD N7 panels for my room and would rather cover them with black fabric to match my absorption panels. As long as I use a breathable fabric would this have alot of negative affects on the performance values? My "diffusion" range is 750hz - 4khz. How much of a negative would this...

So I just visited a local custom Audio/Video shop here in the same town where I work - I was alittle let down by what I saw in the manner of employee knowledge and willingness to allow me to properly audition the speakers they did have (PSB & Atlantic Technologies were the two names of...

As long as you use fire-retardant, acoustically transparent fabric, is it OK to wrap over existing fabric or would you recommend removing the existing fabric? Thanks, Jim