Really exciting news!

Quote:
Originally Posted by Acix 
Did Sennheiser post a FR graphs for the HD800???
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Quote:
Originally Posted by ericj 
The driver is a little interesting, but only a little. It's a dome driver with a big coil and two rolls. By 'roll' i mean the donut. There's two of 'em. Which is a little interesting because it solves the problem of controlling that big dome when you have a big coil diameter.
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It's not a dome driver, but a ring radiator. AFAIK the first application of this dynamic-driver variant in a headphone. So far I only know of ring-radiator tweeters (Vifa, several horn tweeters).
The specs from the brochure:
Transmission range: 6-52,000 Hz -10 dB / 14-44,100 Hz -3 dB
Transducer principle: dynamic, open
Frequency response: diffuse-field equalized
Nominal impedance: 300 ohm
Sound pressure level at 1 kHz: 102 dB (1 Vrms)
Max. nominal long-term input power: 500 mW
Harmonic distortion: ≤0.02% (1 kHz, 1 Vrms)
Contact pressure: approx. 3.4 N (approx.)
Ear coupling: circumaural
Weight (without cable): approx. 330 g
jack plug: ¾" (6.3 mm) stereo
Connecting cable: silver-plated oxygen-free copper cable, symmetrical, kevlar reinforced, 3 m
Operating temperature: -10 to +55°C