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How would I go about simulating this cardiod only u87 style schematic? Every time I do, I get a 10dB or so drop at 1kHz that extends on up. The only way I get any of that back is by changing the 470nF capacitor to no cap! I know the 470nF, 120pF/1m is part of the HF nfb being fed back into the Jfet, but it seems to me when I sim it, I see none of that and the only component doing ANYTHING is the 470nF cap because as I said, without it it's a uniform frequency resonse and with it, it dips about 1kHz and up?

[QUOTE="Amled87, post: 1175097, member: 129988"] How would I go about simulating this cardiod only u87 style schematic? Every time I do, I get a 10dB or so drop at 1kHz that extends on up. The only way I get any of that back is by changing the 470nF capacitor to no cap! I know the 470nF, 120pF/1m is part of the HF nfb being fed back into the Jfet, but it seems to me when I sim it, I see none of that and the only component doing ANYTHING is the 470nF cap because as I said, without it it's a uniform frequency resonse and with it, it dips about 1kHz and up? [/QUOTE]

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