A:Answer If you're talking about playing music or video, the speaker is actually a weak point in my opinion.
The speaker is loud enough to hear Google Assistant's answers from within a small room (kitchen, dining, bedroom), but it can't fill a room with compelling audio.
In other words, It's powerful enough for a song or two while cleaning the dishes but it doesn’t have the clarity or range for a serious music listener.
There’s an EQ slider on both the Home Hub and on the Google Home app which allows you to adjust the Bass and Treble to make it marginally better if that's any consolation.
To answer your question about connecting to another speaker, it's "Yes", but the speaker must also be connected to the same network and be compatible (google/android).
e.g. I can tell my Google Nest Hub to play a youtube music video on my Sony XBR TV and it will do so.
My Sony XRB TV is hooked up to a Sony 7.2 Channel home theater system, and the tunes come out sounding great to me.
