Great,great,great. Package received in 16 days by NPI,heavy.Installed and sounds great.Agree with comment that middle must be connected with back polarity( original scheme is creating out of phase(on pic: green vs blue lines).Sound is clear with high details.
Works since installation. Start to feel that sound too detailed,can hear everything in movies, makes strange feeling when rain starts and you think it is behind your windows
good quality product