Quoted from MightyGrave:Update
So I added a cheap AMP (lepy lp-168s) today but with a little changes.
For power (230V) I found a "Clamp-Connector" in the Powerbox, between a bunch off cables leading to the power supply with unused "Ports" (phase and neutral conductor). You just have to push the Powercord in properly until the lock pinches them.
I also installed a high-/lowlevel converter between speakerout and AMP.
I used the existing Speakerwires and only needed new a RCA-Connector Cable.
I recommend a 2.1 AMP board with a highpass, cause the Bass comes now from all Speakers. I turned the Bass down for Speakers.
I'm fine with the result. The sound now is more voluminous and the bass really pushes.
I can do later some pictures, but this was really easy to install.
[quoted image]
Is that a High/Low adapter, or just a wiring adapter? The High/Low is made to reduce the higher voltage required for speaker coils (up to ~10volts) down to 1V Maximum RCA Line levels. These high/low adapters are essentially 10-to-1 voltage reducers. It's MUCH better to use a full High/Low adapter or risk blowing out the amplifier. Something like this:
https://www.amazon.com/Converter-BOSS-Audio-B65N-Systems/dp/B000LP4RMQ/ref=asc_df_B000LP4RMQ/