I’m new to the forum, this is my first post.
I’m in the process of restoring a pair of 4412 monitors. While looking for information on recapping the crossovers I became interested in charge coupling them instead. I read Greg Timbers article and many posts on the subject on this forum and elsewhere and looked at some schematics using this method and decided it may be doable. I’m hoping someone here would look at my plan and make suggestions for improvements.
One question I have, is since these crossovers already have bypass caps, are there still gains to be had by biasing them?
I’d like to keep this as simple as possible, the current plan is to remove the electrolytic, mylar and bypass caps, solder some leads in place of the electrolytic and mylar, and connect them to poly caps mounted on a separate board, reusing the other existing components.
I redrew the N 4412 schematic to show the changes and included a drawing of what the modified crossover would look like.
I had to parallel two caps in most cases to exactly double the value of the originals, which makes for a lot of parts. I’m using a 2.2 meg ohm .25-watt resistor on the battery simply because that’s what was shown in the article, and on the Century Gold schematic.
Any help and advice would be greatly appreciated
Bill
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