Originally Posted by CharlesC
Thanks. That's interesting about the sensitivity. So much to learn.
Yea it is
Originally Posted by mikeaj
If you want lower impedance you need the voice coil to have fewer turns (less length on it) or be thicker (maybe means they can't pack it as tight as they want or perhaps the extra weight makes some difference) or something or other I'm forgetting. Hopefully you get some better responses than mine. That said, whatever Beyerdynamic did on their DT 770/880/990 line doesn't seem to affect all that much with the different impedance versions.
Sennheiser's also seemed to have said that they design their headphones aren't having high damping factor from the source, so making a higher headphone impedance would help ensure that. They need it, too, considering how pronounced the midbass resonant hump in impedance is on many of their models.
Practically speaking, Sennheiser's headphones aren't even that low sensitivity so say the HD 700 should be no more than 5 dB quieter than HD 598 out of any source as per InnerFidelity measurements (HD 800 no more than 9 dB). That's not some huge difference.
ZOMG I missed you PRINNY DOOD, sorry but he makes a good point. Ditch Sennhesier adn switch to Beyerdyanmic :3, we've got wonderful headphones in 32 ohms ;3 [no just kidding... but beyerdyanmic ftw]
also, truth b told the new AKG K812 is 32 or so ohms is it not? So You may enjoying upgrading to something like a Beyer Dynamic T90 [250 ohms] [Or the Dt 880 32 ohm] than an KAG K812.
Still, there are a LOT of very high end Amps that push out a TON of power, I think it's the common practice of pairing high end headphones with these uber powerful Amps that has lead to the higher ohms
also i read some where to that 600 ohms used to be an industry standard within the Audio Recording and manufacturing industry, so guys in recording studios could get all there gear from seperates OEMs and not have to worry about impedance mis matching, I could be wrong but
the Dt 880 32 ohm and AKG K 812 seem like upgrade to your current headphone, that offer low impedances