I think you mean "Patents" are worse than trademarks.
Trademarks are tough because they are both state and federal law. They also have legal rules such as "would a consumer be confused as to the source of goods?". This is a "fuzzy" rule, particularly because most consumers have never heard of either company (no disrespect meant to either company). So, you immediately have to begin narrowing the definition of a "consumer".
It can also depend on who was using the mark longer, and where they were using the mark. In this case, I assume both companies were selling nationwide, so maybe that doesn't matter.
I assume for the other company "soundscape" is a play on words, like "landscape" + "sound"? That doesn't seem to the (same) case with Salk.
It is better to discuss things, if possible. If they hope to branch out into other areas, though, they might want to keep that name. (Though that speaker configuration seems pretty much good only for outside speakers.)
From an IP lawyer