Ah, I see the board is back up and our resident EE poobah is back in residence. :LOL:
JohnK just posted his latest effort in his search for the holy grail of transient perfect crossovers, i.e. pass a square wave that looks something like a square wave.
This one is a spreadsheet for doing Lipshitz and Vanderkooy's subtractive filters with time delay. The advantage over his previous stuff is you can use steep filter slopes. Have you poobahs tried this?
It would be trivial with a DSP box, somewhat harder with op amps, although doable at higher frequencies, and very difficult with passive components. The pic shows the basic DSP signal routing. I left off the EQ stuff. Separate from the crossover filters, you would need to EQ each driver as flat as possible (close mic'd) on each side of the crossover frequency and time align the two drivers' acoustic centers. Then you would probably do your baffle step and voicing on the input side.
JohnK just posted his latest effort in his search for the holy grail of transient perfect crossovers, i.e. pass a square wave that looks something like a square wave.
This one is a spreadsheet for doing Lipshitz and Vanderkooy's subtractive filters with time delay. The advantage over his previous stuff is you can use steep filter slopes. Have you poobahs tried this?
It would be trivial with a DSP box, somewhat harder with op amps, although doable at higher frequencies, and very difficult with passive components. The pic shows the basic DSP signal routing. I left off the EQ stuff. Separate from the crossover filters, you would need to EQ each driver as flat as possible (close mic'd) on each side of the crossover frequency and time align the two drivers' acoustic centers. Then you would probably do your baffle step and voicing on the input side.
Comment