Headphone impedances: what the hell?
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Eagle_Driver

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And yet Grados seem much louder than Senns when both are driven directly from a weak portable player (even though the actual difference in the total sensitivity between the SR-325 and the HD600 from a near-zero-Ohm jack is less than 3 dBA). Why? Because the Grados have a substantial response peak in the upper mids and lower highs! (While most Senns are a bit recessed in that area.)
 
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post-842869
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terrible

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Well I can't argue about that. You guys lost me at the start( dare I say most of us )
 
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post-843039
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pedxing

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In the "lets do some math" part of this thread, where did the equations come from? I cannot derive the equations.
 
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