I didn't mean to hijack a thread, so I started a new one.
How do you make a speaker output a square wave?
Quote from Bill Fitzpatrick
If you go active xovers to eliminate the the passive xovers, you still have the frequency dependent phase shift.
If you run bandpass boxes with no xovers, you still have frequency dependent phase shifts associated with the inductive and capacitive components of a speaker in a box.
It doesn't make sense to make a multiway system with full range drivers. That might get you close in the speakers bandpass, but the system wouldn't sound very good.
There is no reasonable way to eliminate the frequency dependent phase shifts of analog circuits.
The only way that I can think of is digital FIR filters and digital time delays to contend with variations in the acoustic centers of the drivers. Even then, I fear that the best you'll get is a rough approximation of the original square wave, but if this could result in a phase coherent reproduction of the leading edge of the square wave, I would be very happy with that.
ok? Did I miss anything?
Rodd Yamas***a
How do you make a speaker output a square wave?
Quote from Bill Fitzpatrick
Square wave. The fundamental frequency plus all odd order harmonics. Now this you can reproduce. What I can't see is how to reproduce the harmonics with their original phase relationship to the fundamental frequency with a multi-way system.Now, tell me why YOU think I need to go digital and time delays to get a square wave.
If you go active xovers to eliminate the the passive xovers, you still have the frequency dependent phase shift.
If you run bandpass boxes with no xovers, you still have frequency dependent phase shifts associated with the inductive and capacitive components of a speaker in a box.
It doesn't make sense to make a multiway system with full range drivers. That might get you close in the speakers bandpass, but the system wouldn't sound very good.
There is no reasonable way to eliminate the frequency dependent phase shifts of analog circuits.
The only way that I can think of is digital FIR filters and digital time delays to contend with variations in the acoustic centers of the drivers. Even then, I fear that the best you'll get is a rough approximation of the original square wave, but if this could result in a phase coherent reproduction of the leading edge of the square wave, I would be very happy with that.
ok? Did I miss anything?
Rodd Yamas***a