<font color='#000000'>I read the technical funtion of the impedance switch on this site. I have an old Yamaha RX-V3000 receiver. The receiver have plenty of ventilation. The rear speakers and front center are 4 and 6 ohms. Is safe to leave the switch at 8 ohms possition or Yamaha quality is so bad that I must set the switch at 4 ohms?
I will appretiate you comments.</font>