rhythmdevils
Member of the Trade: rhythmdevils audio
- Joined
- Feb 11, 2005
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Yeah, the internal damping foam. I'll send you a pm...
Quote:
Originally Posted by GuyMe
I've read this term "mechanical damping" thrown around usually to describe the YH1K, what does it mean? Like a car suspension made out of felt?
......
So now you see why I use the term mechanical damping. It's in contradistinction to electrodynamic damping, the kind you get with dynamic drivers and woofers. You increase electrodynamic damping by increasing magnet strength or decreasing the output impedance of the amp, neither of which affects isodynamic drivers.
Hmm. Not sure what to think about this one.
http://page11.auctions.yahoo.co.jp/jp/auction/n103344906
Hmm. Not sure what to think about this one.
I honestly don't know how to explain the flat-impedance-means-resistive-means-unaffected-by-source-impedance-thing to plin [and welcome to you as well-- we surely don't have many Greeks] any better than I already have. If there's not enough inductance to generate back EMF even when there's a big mechanical resonance, the amp's output has nothing to work on/against, bla bla bla. But I know plin isn't the only skeptic here, so does anyone have a better explanation? JazZ and setmenu nearly took over the thread in the first few posts discussing this, bringing in the example of the Magneplanar single-ended planar-magnetic loudspeaker. Anyone?
...So if there is a motion in the driver other than the one strictly produced by the amplifier itself (like a resonance), this motion should produce a respective current that should be apparent as a significant change in impedance curve.
I'm curious about something from a design point of view: are the magnet holes (or in the case of the newer LCD2/Hifiman orthos, the arrangements of the grid) arranged in such a way to account/optimize for the accoustic diffraction pattern of the sound passing through them? or does the diffraction not matter at such a short distance for audio frequencies?
Sounds like a question for the Audeze boys, or those close enough to them to've overheard diffraction-chat. My opinion is that the bad effects of diffraction, ie, having many tiny separate sources of sound which then interfere with one another and create roughness in the response curve and lobing in the polar response-- all things we find in box-type speaker design-- occur in a headphone over such tiny distances that the effects are almost all beyond the range of hearing.