What is the role of the capacitor in Simpl48 circuit?

renthomsen All Messages By This Member #37137 A couple of years ago, Martin Kantola shared his simple P48 without a capacitor. Pure genius! Do a search for: ? One resistor P48 electret mic ? Different pros and cons compared to SimpleP48.
Jerry Lee Marcel All Messages By This Member #37136 开云体育 Le 05/02/2025 à 07:31, Adam Jo5eph via groups.io a écrit?: Dear All, My questions are, In the simpl48 circuit, what is the role of the capacitor? Tj=he role of the capacitor is to conduct AC signal whilst isolating DC. What happens if it is not used? Not used, as in "not there" or as in "replaced with a short"? In the former case, very low signal, in the latter case, too low DC voltage on the capsule, so no signal. What are the results at different values? The capacitor acts as a high-pass filter, in conjunction with the mic preamp input impedance. Small cap-> no bass. Many thanks. ? ? ? ?
Johan Vandermaelen All Messages By This Member #37135 The capacitor blocks the 48V to your mic. The 48V via pin 3 is limited to a safe voltage by the resistor. Smaller values will make a 6dB/octave HP filter in the audio range. Mostly nor desired.
Adam Jo5eph All Messages By This Member #37134 Dear All, My questions are, In the simpl48 circuit, what is the role of the capacitor? What happens if it is not used? What are the results at different values? Many thanks. ? ? ? ?

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