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Originally Posted by lyons238
i need closed headphone and the k271 is lacking bass.
I thought the Denon was more a semi open head phone. I think the headroom charts will show the isloation is...
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Could somebody specify more precisely, at which frequencies these resonances occur?
The resonances in mine were at 450Hz:
AKG K701 resonance problem
Interesting posts about dampening the resonances. I returned a pair of k701s after 9 mponths due to resonance problems. In hindsight I could have dampened them (I tried opening them but did not know how to remove the grills). Anyway...
I noticed the same thing. I thought my head was changing but noticed the dents appeared only after using the headphones and went away in a day or two. The 701 appreciation thread has some simple headband mods.
When listening to my k701s, occasionally I get a buzz from the right channel. I ran a sine wave sweep and found it to occur around 450Hz. I can dampen or stop it by pressuring the case firmly so I don't think it's the driver.
Has...
A very easy and cheap mod which greatly improved my enjoyment of the k701 (reduced the 7-8kHz peak):
http://www.head-fi.org/forums/f4/akg...others-411268/
