Originally Posted by Dmac82
Quick questions guys, can the RX A870 handle 4ohm speakers ? Thinking of buying KEF Ci4100QL for L-C-R
I have a RX-A770 and I'm very interested in a pair LR speakers I saw a youtuber review. Then I found out they're 4-ohm.
On page 132 of A770 manual under "Changing the speaker Impedance setting" it says:
"Change the unit's speaker impedance setting depending on the impedance of speakers connected.
6 OHM MIN - Select this option when you connect 6-ohm speakers to the unit. You can also use 4-ohm speakers as the front speakers
If I understand correctly you're not to change the setting to 6-ohm
because that will reduce your power output and is there only to pass a UL test, some compliance/certification thing.
On the Yamaha product site for the 770 Specs under Amplifier Section the last item says:
Dynamic Power / Ch (Front L/R
/2 ohms)-130 / 170 / 195 / 240 W
Seems it's been tested for 4-ohm and even 2-ohm. But only for L R front speakers.
Audioholics FAQ has some guidelines - https://www.audioholics.com/frequent...r-or-amplifier
Keep it set for 8 ohms, watch excessive volume levels, no AVR in a cabinet/proper ventilation, high efficiency well designed speaker, risky with Mid-fi receiver.
I figure the Aventage fall under "High End receiver".