Handmade 5.1 digital audio preamp with PT2323 and PT2322
June 18, 2021
This is a 5.1 audio preamp board. The used ICs are PT2323 and PT2322. PT2323 is a 6-channel audio selector. It provides a built-in 2-channel to 6-channel translator and PT2322 is a 6-Channel audio processor. Master volume control, 6-channel individual volume control and 3-band tone control (Treble, Middle and Bass).
PT2323 board with circuit
Part list
| U1 | PT2323 |
| C1-C21 | 10uF |
| C22 & C23 | 104 |
| C24 | 403 |
| C25 | 47uF |
| R1-R20 | 100K |
| R21-R26 | 270R |
| R27 & R28 | 22K |
PT2322 board with circuit
Part list
| U2 | PT2322 |
| C1-C12 & C23 | 10uF |
| C13 & C14 | 222 |
| C15-C18 | 103 |
| C19-C22 | 104 |
| C24 | 22uF |
| R1-R12 | 100K |
| R13 & R14 | 3.3K |
| R15 & R16 | 6.7K |
