I'm pleased,... but also a bit disappointed I received a new pair of Sennheiser PXC 250 noise cancelling headphones just the other day, and while I'm mostly happy with them, I'm hugely disappointed with one aspect, and that is the noise cancellation at low frequencies. It doesn't compare well...

I'm looking for a pair of headphones that will sound pleasant and non-fatiguing, especially in the midrange frequencies. I've DIYed a couple of loudspeakers, so I'm looking for info from a slightly different technical perspective. For me some of the most useful information that speaker...