After replacing our Sony HGTV with a newer model I also replaced our Denon AVR with a newer Denon more in-line with the new Sony's capabilities plus i had to replace my right 50's network. Due to a number of factors I had a tech come to setup everything. Following his adivce i choose not to biamp my 50's. He suggested not to biamp my 50's due to the odd shape of our room. Another change from previous setups was we solely relied upon on our Denon's Audyssey MultEQ for audio management. I must admit I prefer Audyssey MultiEQ over the manual sound meter method. The young Tech did a fine job.
We have no plans to ever replace our Alphas.
Just my two cents worth.
LG OLED 55EG9100 HDTV, DirecTV HD DVR Genie HR44, DirecTV AM21 OTA Receiver, Sony BDPS6500 Blu-Ray, Bose Soundtouch 130 HTC (Sound Bar), Panamax MR5100 Power Manager, Harmony Ultimate One Remote, Monoprice AV Cables
LG OLED 55EG9100 Calibrated by Best Buy Geek Squad