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RE: Electro-Voice Regal lll

Posted by Paul Eizik on January 26, 2017 at 19:06:23:
Craig

This starts to explain some of the mystery of why the parts values n the original crossover didn't seem to make sense, and the nominally 100 Ohm L-pads seem to account for the missing Ohms to match the parts. As to why they did it that way I can only speculate. In the page of the 70's EV catalog I posted here they were expecting that DIY'ers would use a "building block" approach which would mean starting with a "full range" woofer in a suitable box which would be made. Later you would add a tweeter for some highs. After you had that awhile you would add a midrange horn for "presence". The mid horn and tweeter were presented as add on tone controls.

As you'll be nearing a time when you can compare the new crossover to the old one, it might be time to move this up page to a new thread, as we're stretching the limit of how far we can go to the right down here. Hopefully the speakers sound better!

Paul