low cut - high pass active R-C audio filter (schematic)
LINKS TO AUDIO PRE AMPS & FILTERS IN THIS TEXTBOX. This video does not show a special filter (in fact nothing special) but emphasizes the effect from the amplifier stage (and its amplification) on the sound character from the filtered audio signal, entering the input. This effect is very substantial. Though the only filter element is a small capacitor from 10 N (0,01 uF, this capacitor is not able to let the low audio frequencies pass through), the effect from the filtered sound can be influenced substantially by changing the amplification from the transistor (between 1 and aprox. 300 with a BC 547) by turning the wiper from the emitter resistor. With the 330 N capacitor this gives a frequency dependent amplification (the 1 K resistor with the 330 N capacitor build an audio filter too). More audio in my book "Schematics 2, audio amplifiers and loudspeaker boxes", author Ko Tilman. The original video is on Youtube.
AUDIO FILTERS (schematics/bass boost-high cut, sound effects etc).
Audio bass-effective parallel T filter with 1 transistor • Audio bass effective/notch parallel T...
Audio pre-amp loudness correction with 1 transistor • Audio pre amplifier 1 transistor loud...
The Viddeleer tone control 1947-2016 • Audio: the Viddeleer tone control 194...
1 transistor active audio filter design, part 1 • 1 transistor active audio filter desi...
1 transistor active audio filter design, part 2 • 1 transistor active filter audio desi...
How to make a good analog audio transistor pre-amp • How to make good analog audio transis...
Wien Robinson bridge nulls out 430 Hz • Wien Robinson bridge nulls out 430 Hz
Prevent hum in audio amplifiers • prevent hum in homebrew audio amplifiers
Transistor series regulator practice (hum suppressor!) • the transistor series voltage regulat...
3 audio characteristics pre amp filter/sound demo • 3 audio characteristics pre amp/filte...
The importance from the emitter capacitor in grounded emitter transistor circuits
• the importance from the emitter capac...
Effect from the loudness filter on the energy into the loudspeaker • effect from the loudness filter on th...
Audio parallel T filter (loudness) demo video • audio parallel T filter (loudness) de...
Low cut-high pass active R-C audio filter • low cut - high pass active R-C audio...
Opamp “echo remove ” & “phase sound” audio bandpass filter • Opamp "echo remove" & "phase sound" ...
relaxed sound active (transistor) audio L-C filter schematic • relaxed (party) sound passive R-C (L)...
Relaxed (party) sound passive R-C(L) audio filter schematic • relaxed (party) sound passive R-C (L)...
Opamp (741) audio filter with sound profiles • Opamp (741) audio filter with sound "...
Germanium transistors, their noise and how they amplify it • germanium transistors, their noise an...
Germanium transistor audio pre amplifier part 1 • germanium transistors audio pre ampli...
Germanium transistor audio pre amplifier part 2 • germanium transistors, audio pre ampl...
Audio filters design problems • audio filters design problems
The effect of coupling capacitors in audio circuits • effects from coupling capacitors in a...
All the videos hat I have published on You Tube can be found via my Channel Trailer: Link is
• Radiofun232 on YouTube. Updated month...
In thematic order you can find these video’s under the “comments” section.
IMPORTANT: to find all the links to the (+/-700) video’s on my YT Channel, select, in the comments section, “NEWEST FIRST”
My books about electronics are available via the website from “Lulu”, search for author “Ko Tilman” there.
Link is https://www.lulu.com/shop/search.ep?k...
My books are also available via Barnes and Noble and via Amazon.
Regarding all my video’s: I constantly keep them actual, so the original video’s with the most recent information are always on YouTube. That is the source, and search there. When my video’s are reproduced or re-edited on other websites/channels you can not (!) be sure about the original content (=really working electronics) and important adaptations to the circuits.
Be aware of that, I saw on the internet my circuits reproduced in a poor or even not proper way. I can not help that, sorry.
![[Raw, Boring] Four Random Landings](https://images.mixrolikus.cc/video/wacFCUJeWzc)
