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Hi-Fi DX Bass circuit - Electronic Circuits and Diagrams ...
https://www.circuitstoday.com/hi-fi-dx-bass-circuit
Description. Here is the circuit diagram of a passive DX bass circuit that can be used with almost all audio amplifiers. This circuit is designed by Mr. …
Audio Filters Circuits Projects - ElectroSchematics.com
https://www.electroschematics.com/tag/audio-filter/
DX Audio Filter Circuit Received by Email - 12/11/2009 Most universal radio receivers have a very wide bandwidth that is not particulary for radio amateurs. The better [...] 50Hz Ripple Filter Circuit Received by Email - …
Active-filtering circuit for audio DACs
https://www.ti.com/lit/pdf/sbaa322
This circuit shows the implementation of a second-order active-filter for audio digital-to-analog converter (DAC) applications. In applications such as automotive head units, home theater soundbars, and AV receivers, it is critical to minimum undesirable noise in the audible range, approximately 20Hz to 22kHz. For this reason, many delta-sigma type audio DACs implement …
Active Audio Filters for Singal Processing and Control
http://n5dux.com/ham/files/pdf/Active%20Audio%20Filters.pdf
trol circuit that can provide up cut to bass or treble signals. The circuit shown in Fig. 3, although similar to that of Fig. 2, is more versatile. It has an additional filter control network that is centered on the 1-kHz rnidband of the audio spec- trum. This network permits the $ midband to be boosted or cut by as much as 20 dB. g
Variable High-Pass And Low-Pass Filters
https://www.sound-au.com/project155.htm
The circuits shown are expected to be powered from ±15V, although you can also use ±12V with some loss of headroom. The nominal operating level is up to 2V RMS or 4V peak (whichever is the lower). This equates to +8.2dBu or +6dBV, but remember that the high pass filter has gain of a bit over 1.5 (3.8dB), so higher levels may cause clipping.
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