opaqueice wrote: > 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.
Not at all. You're assuming ideal speaker behaviour. In the real world, the mass of the floating part of the speaker has an influence on the sound produced. Sure, both speakers will oscillate at the same frequency, i.e. the cones will move at the same velocity. But, the larger one will have more inertia and will take longer to get going. > 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). The speed of the cone doesn't come into it - all speakers must vibrate at the same speed to produce the same frequency and, apart from non-linearities, that speed is constant over the whole are of the driver. A speaker driver is designed to approximate a piston moving in 2-dimensional space. R. _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
