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So, first the caps... Using the simplified crossover schematic that
@PeterSchut posted in
reply #38, I have a couple questions.
1) In the VMR circuit, is there any reason not to replace the two parallel 4.5uF caps with a single 9.0uF part (as long as the voltage rating is high enough)? Seems like a good way to simplify things a little and maybe save a buck or two.
2) Also in the VMR circuit, any reason not to use an 18.0 uF +/-5% to replace the original 17.7uF +/-10%cap? That's only a difference of +1.7% in nominal value compared to the original, and with the tighter tolerance, the replacement will be well within the tolerance of the original cap.
3) in the woofer circuit, I was thinking about just using a big Dayton Audio DMPC-90 90uF 250V Polypropylene cap. I know I can combine smaller values in parallel, but prefer to keep things simple when possible. This is just a shunt cap in the woofer circuit and not in the signal path. In my limited experience, as long as these shunt caps are of the correct value, they don't seem to have much impact on signal quality - certainly not as much as the signal path caps in the tweeter and midrange circuits. In fact, in the past, I have often used Mundorf E-Cap NP electrolytics in these woofer shunt circuits as a way to save both money and space. That would be another option here. Any other recommendations?
