With the right track, when I close my eyes even the tiny Spendors can sound about as big as my floor standing speakers!
However, other content will sound decidedly smaller.
(Basically if it's a recording that contains instruments and voices recorded and mixed to sound forward and large, they can sound that way on the tiny speaker. But with more distant, smaller image sizes the smaller speaker shrinks things a lot more - e.g. certain symphony recordings - where the larger speaker portrays things with a more consistent sense of larger scale. That's in my experience anyway.