Hi, as selfmade said you can use the matrix to feed delays and front fills etc…..

Assign inputs to your L-R buss and assign these(L-R) to matrixes, then in turn patch the matrixes out to you speakers as needed…..so you feed the matrixes from the L-R masters……

I always use matrixes to feed my FOH, I run most everything to L-R and these in turn feed the top flown PA w/stereo matrix, the bottom stacked PA also stereo matrix, mono delays, mono center cluster,mono front fills, subs in stereo or mono, mono spots etc……….invaluable

You can also assign Groups /Auxes to matrixes……

RayS

R-72/iDR32/iPS10