I've thought a bit about the reason behind bass porting in an in-ear headphone, and here's another idea: Perhaps the tight seal between an earphone driver and the ear canal may apply an excessively high acoustic impedance to one side of the driver, causing its very deep bass output to be...

Awesome looking photos! What do you use as a background when taking your pictures?

Chiming in here... I recently came into a set of the Bose TriPort IE earphones, and after hearing them in person, I don't think I would have bought them for myself. The bass (circa 50-120 Hz) is so overpowering that it overpowers everything else, and I'd characterize the mids as 'muddy' and...

I think the Groove PM20s are based around a single full-range driver, instead of the ProMedia 2.0's dual 2.5" midbass drivers and horn-loaded mylar balanced-dome tweeter. There also seems to be quite a bit less amplifier power. The Groove PM20s seem to be more positioned to compete with smaller...

Thanks, everyone, for all the insights. It sounds like I shouldn't be nearly as worried about this as I have been. If this last course of antibiotics doesn't resolve things by the end of May (the six-month mark), then I'll just jump ahead and have the tympanostomy done. I also want to prevent...

Hi, everyone. For the last five months, I've been suffering from a chronic middle-ear infection in one ear that has produced a great deal of inflammation (impairing my upper-range hearing and producing a lesser, general broadband attenuation, and some continuous pus drainage down my...

Is there a Wikipedia article about this? If there isn't, there should be. It seems like Wikipedia material to me - and you've already got sources.

How would the HeadRoom Total Airhead work with these, do you think? I don't mind a battery-powered headphone amp - I can just do rechargeable batteries. However, even though I've built my own speakers, I'm not so sure about building a headphone amp, and I think I'd be willing to do the $99 Total...

Hi. I'm new to head-fi (in the general sense, and these forums specifically as well). I recently had the chance to live with some Ultrasone HFI-700 headphones, and I grew to like their sound after a lengthy break-in, but when it came time to consider my own headphone selection, the...