Active speakers faulty in VW Passat 35i

Hello everyone,
A few weeks ago, I converted my 35i VR6 to a TDI 1Z. This vehicle has active VW speakers in the doors. Unfortunately, both are defective; one doesn't work in the rear, and the other doesn't work in the dashboard. Since the speakers have built-in hybrid amplifiers, I had the idea of replacing them. However, the model numbers have been carefully removed.
Okay, here's the translation:

"Now, my question: Does anyone have any experience with these speakers, or perhaps even have any documentation (like a schematic diagram)? Or does anyone still have some of these lying around in their basement?"

Regards,
Benno.