5-Channel Equalizer PT2389 3D-Effects Bass Filter Circuit

Princeton Technology Corp. The manufacturer’s pt series has many audio control ICs, I’ve seen it in sound systems made in China, a complete control circuit made with PT2389

Pt 2389 is a 5 band digital echo circuit. The circuit also adds Classic – Jazz – Pops – Rock – Flat and 3D sound effects, Bled (BB) features to the sound. I got higher performance than I expected in my experiments.

3 years ago, when I opened the inside of my Sony Wolkmen’s cassette player to change the motor’s belt, I came across this integrated. I bought the Wolkmen for 200 million with the money of that time… The circuit is a really nice circuit.

PT2389 Equalizer 3D-Effects

PT2389 5-Mode Preset Equalizer IC with Bass Booster & 3D Effect

• CMOS Technology
• Low Total Harmonic Distortion and High S/N Ratio: THD + N < 0.01%, S/N > 95 dB
• LED Display Output Mode
• Least External Components
• 5 Sound Selections Provided: Flat/Normal, Classic, Rock, Pops, and Jazz
• Bass Booster Function & 3D Effect Provided
• 2-Channel Output
• Wide Operating Voltage Range: 5 ~ 9 V
• Direct or Cyclic Key Selection is Provided
• Available in DIP or SO Package

PT2389 Circuit Proteus ares pcb files