11 cm diameter, 22cm height, 17cm length, 15 cm width

They need regular power and 3.5 mm.

Hi Valentin Remove all sources of interference. Mobile phones and routers or similar devices can influence the function of the speakers and produce crackling. If the problem cannot be solved, the speakers are most likely defective. I had a similar case with other speakers. To repair it yourself: you can look it up in forums, but it's a lot of tinkering.

3.5mm

Just take an adapter from 3.5 mm to 2 times 3.5 mm, then it works.

Hi Skyyy, no they don't have one. Look for "Razer Nommo Chroma", they have lighting.

Which noses? If you mean the knobs on the right speaker, that's the volume and bass knobs respectively.