Hei!
Jeg har en 600E, og jeg mener at det står at man ikke skal koble på høyttalere med lavere impedans enn 6 ohm på denne receiveren. Her er noe jeg fant på Onkyo sine hjemmesider som kanskje kan hjelpe:
Can my ONKYO amplifier or receiver drive 4 ohm speakers?
Our amplifiers and receivers are equipped with high quality material and technical concepts to provide best sound quality and safe listening environment to enjoy music and movie for many years. But basically and due to CE configuration regulation we can only guarantee safe use at minimum 6 ohm speakers. however, many speakers have 4 ohms, but some of those speakers drop at certain frequencies even below 4 ohms. In combination with several circumstances both speakers and amplifiers could be seriously damaged or even be destroyed: · The 4 ohm speaker drops significantly below 4 ohms at certain frequencies · you are listening to the music very loud · you are playing extreme dynamic music (in example, CD's with high level equalization or recording like "Tschaikowsky 1812" or "Charly Antolini- Knock Out" or other high dynamic material). This combination can be very dangerous and should be avoided. Please contact your dealer or distributor to find out about the impedance response of your speaker (regarding complete frequency range!!!). Unfortunately it is our experience that some speakers do have difficulties in their impedance response. Also please note that using 50 to 60% of the maximum volume indication set with the volume know will give you already full clean power output of the power stage. Turning the volume up further will not increase the volume but will increase distortions which could endanger your amplifier and your speakers.
Dette forklarer jo hvorfor Onkyo ofte oppgir effekten på forsterkerne i 6 ohm, istedet for 4 eller 8 ohm.
/J