What is the ACTUAL Yamaha CR-1000 Receiver Power Rating?

GlobalWarming

GlobalWarming

Super Member
Hello to all......

Of all Yamaha receivers the CR-1000 seems to have the most diverse power ratings, so I ask what is the actual (oficial) power rating for this wonderful receiver.


I have seen it listed at 70, 85, 90 and 100 watts......


What would the reason or the confusion be for so many different power ratings?

How does it compare to the CR-1020?

Thanks!

Nel
 
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It is 70 wpc 20-20k at 8 ohms both channels driven. This is the rating standard for all quality amplifiers
 
grateful has it right.

The Federal Trade Commission mandated that all amplifiers be specified as:

Power per channel at an impedance with a bandwidth and a distortion, after a 30 minute 1/3 power warm up, in 1974. I was looking at a Crown DC-300a spec sheet online last week and a few of the graphs were deleted and a line stating that the graph was illegal effective with that date in 1974 when the FTC ruling took effect.

So this Yamaha is 70wpc @ 8Ω, 20-20kHz with less than 0.1% THD or at 4Ω:
85wpc@4Ω20-20k<0.1%THD

Many amps before that were rated in Institute of High Fidelity (IHF) standards which were higher numbers because the rating system used a peak output. That is why Yamaha has so many different numbers associated with it.

DIN was another number seen at times, but mostly on equipment produce in Europe. I'm sure ADVHamburg has seen this on lots of equipment spec sheets.
 
Thanks a lot for clarifying this issue one step further Blue Shadow.....

Yes, I have seen this DIN rating here in Germany; it also had me a little confused.....

When people posted something for sale I was never sure....
 
I hooked up mine to a scope at 1khz both channels driven in to two 8 ohm dummy loads this evening.

got 38V at clipping * .707 ^2 /8 = 90.2WPC

My manual says 75WPC both channels driven in to 8 ohms at 1khz

Not sure if it should be said that I replaced the relay, all electrolytic caps, any out of tolerance resistors, any fusing resistors, and set bias and offset prior to testing
 
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