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Can someone explain properly what these specs mean. - Page 2

post #16 of 18
Does it specify the impedance used when measuring the voltage swing then? If not you can't make calculations like that--I mean if you take an 8 ohm headphone and still say the jack swings 305mV, you'd get 12mW instead of 3 or something like that...
post #17 of 18
Thread Starter 
Ok you all stand in line...I want to label all of you geeks.

From a simple question you guys took it so far

You guys never fail to amuse me

Intresting math...now just give me a few days to figure out what you mean by it
post #18 of 18
Quote:
Joe Bloggs said:
Does it specify the impedance used when measuring the voltage swing then? If not you can't make calculations like that--I mean if you take an 8 ohm headphone and still say the jack swings 305mV, you'd get 12mW instead of 3 or something like that...
It's true, the calculation assumes that the unit can deliver 305 mV into a 32-ohm load. However, since many (most?) headphones for portable applications are in that impedance range, I think it's a reasonable assumption. But you're right, without a manufacturer-specified impedance rating it's not possible to definitively determine the power output.
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