http://zaphaudio.com/audio-speaker12.html
In this design, Mr Krutke says he has about 4.5dB of BSC on the woofer. But all he has in the woofer crossover is the inductor (1st order low-pass) and the LC notch filter (for the 8KHz breakup node).
I'm getting a tad confused
In this design, Mr Krutke says he has about 4.5dB of BSC on the woofer. But all he has in the woofer crossover is the inductor (1st order low-pass) and the LC notch filter (for the 8KHz breakup node).
I'm getting a tad confused
Khron,
The woofer driver is a complex impedance and judicious design with a minimal number of components can still yield the desired BSC curve. Take a look at the graph labeled "woofer filter effect." This shows the actual drive to the woofer and the shelving effect between 200-2000Hz that John was targeting.
You'll see this kind of thing a lot with well-designed crossover networks......the actual topology might not look "generic" (or what you'd expect) but it still accomplishes the goal.
Cheers,
Davey.
The woofer driver is a complex impedance and judicious design with a minimal number of components can still yield the desired BSC curve. Take a look at the graph labeled "woofer filter effect." This shows the actual drive to the woofer and the shelving effect between 200-2000Hz that John was targeting.
You'll see this kind of thing a lot with well-designed crossover networks......the actual topology might not look "generic" (or what you'd expect) but it still accomplishes the goal.
Cheers,
Davey.
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