Tuesday, January 24, 2012

Simple AudioTone Control Circuit

Simple AudioTone Control Circuit
This simple AudioTone Control can be acclimated in may audio applications. It can be added to amplifers, acclimated as a angle abandoned ascendancy module, or alike congenital into new and agitative instruments. It's one IC architecture makes it a actual bunched circuit, as alone a few abutment apparatus are required. Plus, it does not use a bifold ability supply. This agency that the ambit will run from 9V to 15V (although the bass will be a little anemic at 9V). The ambit is by Robert Barg and originally appeared in the Think Tank cavalcade of the May 1998 affair of Popular Electronics.

Simple AudioTone Control Circuit Part List

C1, C3, C5, C7, C15, C16 2.2uf Electrolytic Capacitor
C2, C6 0.05uF Ceramic Disc Capacitor
C4 0.22uF Disc Capacitor
C8, C10 0.015uF Ceramic Disc Capacitor
C9 100uF Electrolytic Capacitor
C11, C12, C13, C14 0.1uF Ceramic Disc Capacitor
R1, R4 10K 1/4W Resistor
R2, R5 33K 1/4W Resistor
R3, R6 4.7K 1/4W Resistor
R7 2.2K 1/4W Resistor
R8, R9, R10, R11 50K Linear Pot
U1 TDA1524A Tone Control IC
S1 SPST Switch
J1, J2, J3, J4 4 RCA Jacks
MISC Board, Wire, Knobs, 18 Pin Socket

  1. S1 is a contour control. Volume is controlled by R11. Balance is controlled by R10. R9 and R8 control bass and treble, respectivly.
  2. J1 is the left input, J4 is the right input. J2 is the left output, J3 is the right output.
  3. The circuit is designed to accept line level or mic level inputs. if you are going to be using a stronger signal, a voltage divider will be necessary to cut it down to proper levels.
  4. You can, of course, skip J1-J4 if you plan to integrate this circuit into another.


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