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Simple, Easy Parametric

2015-01-12 12:07  
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greq Simple, Easy Parametric & Graphic EQ`s, Plus Peaks & Notches

Simple, Easy Parametric & Graphic EQ`s, Plus Peaks & Notches…[more]

Soft Switching Amplifier With Tone Controls

Stereo Width Controllers

Subwoofer Equalizer: The Linkwitz transform circuit is a hugely flexible way to equalize the bottom end of a sealed loudspeaker enclosure. A speaker that is corrected using this method is flat from below resonance to the upper limit of the selected driver. The low frequency roll off point is determined by the parameters of the transform circuit. Should the enclosure size be too small and cause a lump in the response before roll off, this is also corrected. A conventional active crossover netw1ork is then used to divide the subwoofer signal from the main channel signals. Note that there is also a separate spreadsheet calculator available for calculating component values for different situations not handled by the original circuit.

Subwoofer Filter: 12 dB/octave low pass filter for subwoofer, includes subsonic filter

Three Band Active Tone Control

Three Band Equalizer

Tone Control #2

Tone Controls With 2x NE 5532: check also PCB design and notes

Tone Detector

Tone Generator


Use Rotary Potentiometer To Drive Solid State Volume Control: 01/20/03 Electronic Design – Ideas for Design / This design idea details how a standard volume control can be replaced by its solid-state equivalent. Digital potentiometers are often advertised as replacements for rotary volume controls. To simulate these controls, many circuits employ up/down…

Voltage Controlled Panner: variable gain amplifier circuit

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