In Reply to: Pi 500 Hz Xover for 515B/511B??? posted by AstroSonic on May 30, 2003 at 10:49:47:
Check your E-Mail because I've sent the π crossover schematics to your E-Mail address. There are crossovers listed with 500Hz, 600Hz, 800Hz and 1.6kHz crossover points. You'll find a chart of values for different amounts of attenuation/augmentation included with each schematic, and all these were worked out using Spice. If you're interested, there's also a 1kHz π crossover discussed in an earlier post called "1kHz crossover values."Lots of people have built π speakers using Altec horns, and the π crossover works very well in this application. I suggest that the 6dB version be used for flattest on-axis response, but that usually leaves the HF horn about 4dB louder than the LF subsystem, if it is a direct radiator or undersized horn. One way to get around this is to use the π cornerhorn configuration and I highly recommend this approach.
Follow Ups: