The schematic demonstrates that the two enhancers on the gathering are driven 180 degrees out of stage. Note from the physical format that the two circuits are cautiously coordinated (length of transmission lines) with the goal that the two yields will 180 degrees out of stage and are then used to push/pull drive the yield transmission line.
It appears that you could join 2, 3, or 4 congregations together, which would require ensuring the data sources were in stage and the speakers were altogether coordinated to one another in gain and deferral with the goal that the yields would likewise be in stage.
Along these lines, in principle, I trust it very well may be done however with watchful thoughtfulness regarding RF circuit plan format standards. The more enhancers that are paralleled, the lower the yield impedance of the mix. For ideal power exchange, the yield impedance of the get together of speakers should coordinate the impedance investigating the heap which will likely require a type of coordinating system.