120W PMPO PC speaker (reverse engineering)

A long time ago I buy a cheap pear of active PC speaker named SoundSTAR Multimedia Speaker – 120W PMPO.

This audio amplifier is made with UTC2025 (similar with TEA2025 – see datasheet) and is 2×2,5W at 10% distortions.

and tipical application is

I made reverse engineering and is identical as “stereo application” from datasheet, just is added a diode rectifier with filtering capacitor.

I use macro photos for reverse engineering.

Conclusion: Real 2Wis sell as 120 or 200W PMPO.

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