they setup very easily I just adjusted till the setting just started getting tight the sonic effect was so Good I really haven't tried any further adjustments. I added the lenses afterward the pzc are mostly too control the wall induced effects such as slap echo. Lenses are mostly too diffuse the direct sound from the speakers before it reflects off the wall which lessens the effect of the reflection that occurs. Alot of trial and error involved positioning the lenses. Got it 100% correct I seriously doubt it.
