Yes, the Sonos Sub Mini is compatible with the Beam Gen 1. However, some users have reported connectivity issues when attempting this pairing. If you encounter such problems, it's recommended to change the wireless channel in the Sonos app, as this has resolved the issue for some users.

To connect your Sonos Beam (Gen 2) and Sub Mini to a PC, you'll need to provide an optical audio output from the computer. This optical signal can then be fed to the Beam through its optical input adapter. Once connected, the Sub Mini can be bonded to the Beam to handle the bass, regardless of the audio source.

If your Sub Mini isn't producing sound when paired with the Beam Gen 2, ensure that both devices have Wi-Fi enabled in the Sonos app. Additionally, try placing the Sub Mini in a different location within the room. If the issue persists, rebooting both the local router and the Beam may help resolve the problem.

For a small living room, pairing the Beam Gen 2 with the Sub Mini can provide a balanced and immersive audio experience. This combination offers enhanced bass and clear dialogue, making it suitable for compact spaces. However, the choice ultimately depends on personal preferences and budget considerations.