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In Reply to: Re: Isn't the amplifier posted by Pat D on April 19, 2007 at 14:59:39:
...if you are going to determine the accuracy of an amplifier by measurements, then tell me this:You have two amplifiers -
One measures 3% distortion at 1000Hz.
The other measures 5% distortion at 100Hz.Which is the more accurate amplifier (both are well-designed, whatever that means)?
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"Opposition brings concord. Out of discord comes the fairest harmony."
------Heraclitus of Ephesis (fl. 504-500 BC), trans. Wheelwright.
> Insufficient data.>...and what more data do you need to determine amplifier accuracy?
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"Opposition brings concord. Out of discord comes the fairest harmony."
------Heraclitus of Ephesis (fl. 504-500 BC), trans. Wheelwright.
...a hypothetical situation - which is the more accurate of the two according to measurements.So make it 0.5% (@100Hz) and 0.3% (@1000Hz) distortion - which one?
And for much the same reason: you would have to show the distortion spectrum and assess it for audibility.
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"Opposition brings concord. Out of discord comes the fairest harmony."
------Heraclitus of Ephesis (fl. 504-500 BC), trans. Wheelwright.
...amplifier measurements alone don't tell you much about sound quality.
Nope. All this means is that THD isn't weighted for audibility.On the other hand, some magazines (Soundstage, Stereophile) give distortion graphs showing the different components.
____________________________________________________
"Opposition brings concord. Out of discord comes the fairest harmony."
------Heraclitus of Ephesis (fl. 504-500 BC), trans. Wheelwright.
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mkuller when you asked Pat D, ...and what more data do you need to determine amplifier accuracy? Did you mean besides Pat D's knowing what either Real JJ, Klaus, Dan Banquer, Aczel or whatever other objectivist Pat D happens to be following at the time, believes the correct answer is?Thetubeguy1954
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