Passive tone control combined. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Tone, volume controls
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Resistor R2 controls the inflection frequency of the frequency response, and R4 - its slope. The combined action of regulators allows you to get significant limits and greater control flexibility.
A variant of the tone block with frequency response control in the low-frequency region is shown in the upper figure, and its LFC - in the lower figure.
Author: A. Shikhatov; Publication: bluesmobile.com/shikhman
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