Yamaha RX-V2600 Benchmark Performance Tests
We measured the Yamaha RX-V2600's output impedance vs. frequency at 1W. It varies about +/- 0.01 mohms throughout the audible bandpass and then climbs a bit starting around 15kHz. The Yamaha receiver should not have a problem driving a wide range of loudspeakers - even those with an inconsistent impedance profile. It comfortably met our benchmark goal of 100mohms or less through the entire audio band almost twofold!
The damping factor of the receiver hovered for the most part around 250 and went as high as 400 from between 2500Hz and 10kHz. Anything above 50 throughout the audio band is excellent. Kudo's here especially when compare to this receivers predecessor models, the RX-V2400 and RX-V2500, respectively.
Measuring attenuation versus frequency, the Yamaha shows itself to be a pretty smooth player, with only 0.5 dB variance at the low end and 0.25dB variance at the upper limits of human hearing (some of which is attributed to instrumentation error).
We measured CONTINUOUS unclipped power into 4-ohms and showed that the Yamaha could easily drive a single channel from 20Hz to 20kHz at around 185Wrms (20Hz was showing 162wpc). At 8-ohms that measurement fell to around 127wpc (20 Hz was around 113wpc). With two channels driven, the Yamaha only lost a little power, coming in at around 122wpc with two channels at 8-ohms. These tests were conducted unclipped with distortion no greater than 0.5%. So in reality these are not max power figures but real world, clean continuous power measurements.
We tested the preamp section of the Yamaha RX-V2600 and were able to drive over 4V RMS. This is a welcome change for Yamaha as prior models such as the RX-V2400 and RX-V2500 weren't even able to achieve 2V RMS unclipped. Max input voltage before clipping was a whopping 4.550Vrms. This means you can pretty much drive any power amp on the market to full power, without the Yamaha preamp section adding any unwanted harmonic distortion.
All power tests were done with all testing equipment and the receiver plugged into an APC S-15 and S-BATT unit.
