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auto pilot 7th January 2013 01:06 PM

need help tono control with ic 4558d

Mooly 7th January 2013 01:09 PM


Moved to analogue line level :)

That's a dual opamp. What do you want to know.

auto pilot 7th January 2013 01:41 PM

ineed pcb layout or schematic ic jrc4558d

Mooly 7th January 2013 01:57 PM

Don't worry over the choice of opamp. The 4558 can be used or replaced by most common dual types such as NE5532, OPA2134 etc etc.

There are loads of tone control circuits around if you search although I couldn't just locate one with a PCB design... not easy to build ones anyway.

Audio Designs With Opamps -2

3 Band Graphic Equalizer

auto pilot 7th January 2013 07:42 PM

thank you very much for the information

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