Time to make standards "law?" (1 Viewer)

[RichardMA]

Maybe it's time to tighten up the rules regarding
standards for audio/video equipment. Case in point;
Channel separation. Here is the spec from a hometheater
receiver:
Channel Separation (Vol. -30dB, Effect off)
PHONO MM, Input Shorted, 1kHz/10kHz 72dB/60dB
CD Input shorted, 1kHz/10kHz 72dB/60dB

IMO, who cares about "phono" channel separation?
We know what CD separation is likely to be, but why
no listing of channel separation for the 5.1-6.1
channels, the ones that matter? Also, what effect
do all the DSP modes have on channel separation?
Well, I know the effect, but I'd like to see the
numbers anyway.

Like questionable claims for power amplification,
channel separation is another area that needs
"attention" and more information from the mfgs.
-Rich

 

[Saurav]

We know what CD separation is likely to be, but why no listing of channel separation for the 5.1-6.1 channels, the ones that matter?

Maybe because those are line level inputs too, so you'd expect similar numbers as the CD input, since that is also line level? A phono input goes through about a thousand-fold more amplification than a line level input (since a phono cartridge's output is much weaker than a CD player's/tuner's/etc.), so it makes sense to list that separately, because one would expect different performance numbers for that input.
That's just a guess.

 

[Doug_Wes]

I'd sure like to see the FTC or somebody establish standards for home theater amplifier power ratings. There's nothing wrong with rating an amp with just 2 or 3 channels driven, since that figure can be meaningful if you're like me and listen to stereo music a lot. But after reading some of the experiences of folks in this forum, I'd like to know the power ratings with ALL the channels driven too. And it should be displayed prominently in advertising, brochures, etc.