Hi- for the IRS Beta x-over, a Non-inverted signal source,set this front panel control to 0. For an inverted signal, set the control to its 180 position on the front panel.(low freq phase)
Rear panel(low freq servo out)-0 jacks for amps that are inverting. +0 jacks are used to connect amps that are non-inverting. Hope this helps.
Rear panel(low freq servo out)-0 jacks for amps that are inverting. +0 jacks are used to connect amps that are non-inverting. Hope this helps.