Skunk;191180 Wrote: > > Again, not trying to insist I'm right on this, but even creative part > says: "The ribbon is only moving very slightly. So, it can respond very > quickly to a signal". So what is this effect that causes opposite > results in large ribbons versus large woofers?
Yeah, I share your confusion - I still have no idea what people are trying to say. Compare two cones, one large and one small, with a pure tone input, but amplified differently so that both speakers produce the same SPL. First of all, both will oscillate at exactly the same frequency, so neither of them returns to rest sooner than the other - that would be impossible. Second, all else being equal the larger cone will have a smaller x_max, which means for example that the max speed achieved at the center is lower than for the smaller speaker. Somehow I doubt that this is what's meant by fast, especially considering the Quads have an enormous area (and hence probably move quite slowly). All that remains is phase. It is true that as you make the speaker larger and larger, it will become more and more damped, and its phase at a given frequency will approach pi/2. But remember that what matters for a speaker is the phase response, in particular the *difference* in phase as the input frequency is varied, which depends on many factors other than the size of the speaker (like the crossover, for example). Is this what is meant by "fast" - speakers with a nearly level phase response are called fast? -- opaqueice ------------------------------------------------------------------------ opaqueice's Profile: http://forums.slimdevices.com/member.php?userid=4234 View this thread: http://forums.slimdevices.com/showthread.php?t=33981 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
