How to connect passive bbk speakers to pc?

Question

Acustic systems

There is a bbk dk1010s home theater with passive 5.1 speakers, a PC with an integrated sound card (7.1 channel sound in asrock 770de). The cinema only has an aux input for audio input. Accordingly, in this case, only stereo sound is available, the rest of the speakers and the sub are silent.
It would be desirable to involve all columns 5.1. Interested in a budget solution (up to 2.5 tons) for connecting speakers to a PC.
Came up with the following implementations. Criticize them or suggest a better solution.
1. Buy an amplifier for 5.1 channels on ali, ebee, but I didn’t find a budget one there. Or bad looking?
2. Convert passive speakers to active ones. I found a manual for remaking one Soviet column using a tda chip. Would such an option work?
3. Buy an external amplifier from computer speakers, for example, from microlab pro 3. Will this solution work? Will the columns need to be trimmed?

Answer 1

You can't do without a 6 channel amplifier.
One of the budget options is to use a 4-channel car amplifier and play around with different connection options.