Edit: well dang, Shawn must have gotten in touch with Al. I see he posted to another thread and introduced himself. I'll leave this one up anyway. Maybe we can get a "guru chat" going.
Hey Jon, do you know a guy named Al Klappenberger? The Joseph filters came up on another forum. I mentioned your stuff and someone else mentioned Al's stuff. Looks like he's using Cauer filters in his replacement XO designs for vintage Klipsch stuff. I read through his whitepaper and his design target is 120dB/octave initial with the stopband ripple down 25dB. Maybe that makes sense for what he's doing as his primary goal is to overcome the time alignment problems of the old horns.
Hey Jon, do you know a guy named Al Klappenberger? The Joseph filters came up on another forum. I mentioned your stuff and someone else mentioned Al's stuff. Looks like he's using Cauer filters in his replacement XO designs for vintage Klipsch stuff. I read through his whitepaper and his design target is 120dB/octave initial with the stopband ripple down 25dB. Maybe that makes sense for what he's doing as his primary goal is to overcome the time alignment problems of the old horns.
The crossover I'm using is designed by Al Klappenberger. He is also an EE...specializing in filter design... primarily in the microwave area. I think his And Jon's filter designs are similar to each other. Not to many people doing filter design like this in the audio world.
Al details the filter designs on his site at:
In the Klipsch Upgrade section then in the Extreme Slope and in the DIY designs area. The ES600T is the network I'm using in my speakers.
Shawn
Al details the filter designs on his site at:
In the Klipsch Upgrade section then in the Extreme Slope and in the DIY designs area. The ES600T is the network I'm using in my speakers.
Shawn
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