McPanse
100+ Head-Fier
One of my power tubes is failing, causing a volume mismatch between the left and right channels.
My lower impedance headphones (Denon D5000 at 25 ohms) were the first to register the loss of volume and eventually produce massive distortion in the effected channel as the problem progressed.
My HD650s (300 ohm) still play distortion-free but register the volume mismatch and all the loss of sound quality that entails.
Can anyone explain why the lower impedance headphones would the canary in the coal mine here? (my PX100 portable, at 32 ohms, were slightly slower than the D5000 to produce distortion. Both headphones, by the way, still sound fine paired with my healthy solid-state amps).
Lastly, could the Denon's have caused the amp's power tube to fail prematurely? The amp is rated for use with headphones 32 ohms and up. The D5000s are 25 ohms. Does this present a problem?
My lower impedance headphones (Denon D5000 at 25 ohms) were the first to register the loss of volume and eventually produce massive distortion in the effected channel as the problem progressed.
My HD650s (300 ohm) still play distortion-free but register the volume mismatch and all the loss of sound quality that entails.
Can anyone explain why the lower impedance headphones would the canary in the coal mine here? (my PX100 portable, at 32 ohms, were slightly slower than the D5000 to produce distortion. Both headphones, by the way, still sound fine paired with my healthy solid-state amps).
Lastly, could the Denon's have caused the amp's power tube to fail prematurely? The amp is rated for use with headphones 32 ohms and up. The D5000s are 25 ohms. Does this present a problem?