I understand that a driver's ohm changes as it plays. but if at a rest if they are 3.4 ohms that is it. Most 2,4,8 ohm measured at the driver do not read 2 ohm (1.8) 4 ohm (3.4). and so on. If the RF7ii read 3.4 ohm I would take it that when I'm comparing AVR or separates amps. It would be best to look at the 4 ohm. This is important to me due to not all amp scale power output the same from 8 to 4 ohm. So if amp A has a good 8 ohm watt output (135w @8 & 160w @4) but amp B has (125w@ 8 & 180w @4). This is why knowing is so important.