No it can't.
The zone two speakers connect to the surround back speaker terminals which you are not using in a 5.1 set up. That means that they have their own amps and don't affect any of the other amps.
Yes, but the owner manual said that if i use a 4 ohms speakers I have to decrease Ohms manually in my marantz.
Carry out the following settings when using a speaker with an impedance of 4 – 6
1. Press and hold the main unit’s ZONE2 SOURCE and STATUS for at least 3
“Video Format < PAL>” appears on the display.
2. Press DIMMER on the main unit twice.
“Sp.Imp. <8ohms>” appears on the display.
3. Press TUNER PRESET CH + or TUNER PRESET CH － on the main unit to
select the impedance.
6ohms: Select when the impedance for any of the connected speakers is
4ohms: Select when the impedance for any of the connected speakers is
4. Press the main unit’s STATUS to complete the setting.
Than; If I do this, all my channels will be decreased to Ohms? Even my 5.1 Speakers chanel will be decreased to 4 Ohms?
Appreciate your answer.
Sorry, but I am new in forum's,