First off, English isn't my native language so please have mercy.
So, I got a nice pair of Pioneer Monitor 10 headphones from a relative (first and only owner) which look like new but it's sound is very disappointing. Others call the Monitor 10's "impressive" or "like no other" and other superlatives. I don't know if I have a bad pair or not but I don't think this is normal. The right side plays very weak (problem located in the jack, fiddling with the cable confirmed it) but that can be fixed. The real problem is it's 'canny' sound (both sides), higher frequencies are also a bit harsh (not sure if it's normal or it's just me) and the (mid)-lower frequencies are lacking. It's difficult to explain what i'm hearing but's it's almost like I'm listening to the build-in speakers from an iMac... and voices sound like over a telephone. When listening to a frequency sweep I can confirm I do can hear every frequency starting from 25hz and up, but all frequencies below +/- 300hz are underrepresented (fall off at +/- 300hz).
When I really push them against my ears the sound is better, but squeezing them to my ears can't be the way to listen to these. My main headphone is a Sennheiser HD595 and the difference is just mind-blowing. I can simulate the sound (more or less) I get with the Monitors using my Sennheiser's and an equalizer by configuring it like this: Frequencies from 32hz to 250hz all the way down and 8000hz and 16000hz a bit up. I know it's not a very scientific approach and not entirely accurate, but I think you guys might get an idea how it appears to sound. I used different amps but the problem remains.
Any idea what might be wrong (blown? also the jack?)? Anything I can try to restore/repair them (if that's even possible)?
Edited by Chris5488 - 7/7/13 at 4:07pm