Al hit it pretty well, but also worth pointing out that the Goldenears contain powered bass drivers. That sets a high bar for potential bass levels that most any modest size high efficiency speaker in particular will likely never match on its own, especially if room acoustics provide no boost, along the lines Al talked about.
There are reasons high efficiency full range speakers are not very popular overall these days. They tend to have to be very big and very expensive in order to compete with the alternatives in regards to bass levels, and bass sells.
There are reasons high efficiency full range speakers are not very popular overall these days. They tend to have to be very big and very expensive in order to compete with the alternatives in regards to bass levels, and bass sells.