How about this:
a lot of dynaudio diy speaker have a small network for the tweeter for a short time delay, in this case 5 cm.
Positive: no slope (easy building)
Negative: "lot"of components
Ralph
An externally hosted image should be here but it was not working when we last tested it.
a lot of dynaudio diy speaker have a small network for the tweeter for a short time delay, in this case 5 cm.
Positive: no slope (easy building)
Negative: "lot"of components
Ralph
This is a 2.5 way that uses a 24db treble cross with a notch filter.To use more components for time delay I think would not be worth while.I guess what my question should be is .35ms of delay going to make enough difference to even worry about?As you said sloping front baffle makes alot more work.
Whether or not a displacement in the acoustic center is significant will depend on the crossover design and your design goals. If you're trying to make a speaker that is linear phase (of questionable audible merit, and pretty much impossible except at one point in space), then yes, you'll need to tilt the baffle or step it. And lose that 4th order filter.
But it's easy when doing the xover design to account for the acoustic displacement. And the 4th order xover is much less sensitive to that displacement than others. Are you doing a simulation in a speaker CAD program?
But it's easy when doing the xover design to account for the acoustic displacement. And the 4th order xover is much less sensitive to that displacement than others. Are you doing a simulation in a speaker CAD program?
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