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RE: Electro-Voice Regal lll

Paul,
Thanks for the schematic! Just curious, what did you use for the low and high crossover frequencies?

I was hoping I could keep the speakers original in design but update it with new caps. That's not turning out to be the case. I checked with Bob Crites. He says he has NOS 16 ohm T35 diaphragms but wants $100 each installed. Through my research I have come to believe the MR-10 horns were 16 ohms in the Regal III. That would make the 5.7uF mid cap a little closer to what is expected. Since I'm not willing to drop $200-$400 on new 16 ohm diaphragms and since mine measure 8 ohms and new 8 ohm ones are readily available it makes sense to change the crossover & L-Pads to work with what I have.

What is the reason for the 16 ohm and why did 8 ohm become common? The following are the parts I'm considering. The L-Pads have me a little confused. There are different wattages & mono vs stereo.

https://www.parts-express.com/dayton-audio-dmpc-56-56uf-250v-polypropylene-capacitor--027-425#!

https://www.parts-express.com/dayton-audio-dmpc-20-20uf-250v-polypropylene-capacitor--027-436

https://www.parts-express.com/jantzen-audio-037mh-18-awg-air-core-inductor-crossover-coil--255-222

https://www.parts-express.com/jantzen-audio-065mh-18-awg-air-core-inductor-crossover-coil--255-236

https://www.parts-express.com/speaker-l-pad-attenuator-15w-mono-1-shaft-8-ohm--260-250

Craig

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