This is a cool and nice project – a 3 bands Tone Control with a boost or cut of +/-20dB of Bass, Middle and Treble controls, a pure analog processing using op-amp and no digital stream. The Power supply is also pure analog PATC-SPS.
- designed for audio hardware starter (AHS)
- courseware and shareware
- pure analog process for Hifi music
- preferred by Audiophile and Purist
- 3 bands : Bass, Middle and Treble Control
- 2 Separate op-Amp for the input & Tone Control
- +/-20 dB Boost and Cut
- 800mVrms input / 2.2Vrms output
- single PCB for tone Control
- dedicated Split Power Supply (PATC_SPS)
- option to add a digital tone control (PT2257 chipset)
- funded and executed by a Filipino group of hobbyist
- 1deBB (1diy electronic building block)
- bundle with the document, theories and circuit explanation
Recommended for AHS (Audio Hardware Starter)
This project comes with a full document of describing how the circuit works, manual assembly procedure, testing
We have an educational discrete amplifier project with a group of friend from www.elab.ph and we wanted to have a partner tone control. There were several Tone Control online and can be surfed
Design Stage :
I have chosen Op-Amp to be the active component over discrete Transistor, this is the passive tone control block and the active Op-Amp block :
This was the simulation with National Instrument,
The mock-up before finalizing the Gerber file, I do not know much of 3D rendering at that time, and so, I make a paper mock-up PCB with actual components.
First Hand Made Prototype live testing with Audio DAC (Digital Analog Converter — the one with blue PCB and have USB interfaced) connected to a PC. Here, the PATC mainboard was powered by the PATC_SPS split power supply board – a +/-15Vdc well regulated dedicated power supply.
The final PCB that I can share with my friends — final prototype
Final Testing – the PATC mainboard with then +/-15Vdc well regulated power supply on my bench
As its purpose, it needs to be paired with the DNY40W Power Amplifier project with the team, and so, I made a simple casing design using black fiber glass
The final project appearance along with the intended Amplifier (bottom : DNY40W discrete power amplifier) – – it looks the same as in the paper design, isn’t it?
Where is the DIY Learning ? Its hard coded into its document, I made effort to make it to be compliant to be used by AHS (Audio Hardware Starter).
Getting the necessary Document to build this project :
The files are shareware and courseware, please go to this link to download the full document. I would like to know who are interested in my hobby, kindly help to fill the form, thank you so much.
Make this Project a Better Project:
If you would like to contribute, have comment/clarification or want to improve this project, kindly contact me.