I don't find synthetic/electronic bass very useful for testing because you don't know what the timbre is supposed to sound like.
Being genuinely baffled over the inclusion of those Paula Cole tracks I was thinking the same. That synth bass is utterly excremental and about as musical as my arse about five hours after a breakfast of baked beans and fried onions. It would sound like shite no matter what it is played on.
IMO, this kind of lazy synth bass is borderline retarded. To me it sounds like Timmy Burch from South Park in the background going "ddddeeeerrrrrrrr........ ddddoooooooorrrrhrrhhhhhh...... deeerrrrrrrrrrrrrrrrrrrr........ ddddddrrrrrrrroooooooohhhhhhhh.........." into a microphone through a sock. Unfortunately, this crap is pretty much normalized nowadays. You can hear it damn near everywhere. One of the reasons why I'd rather neuter myself than go clubbing.
Now here is some bass. If your speakers can play this loud without distress then you're doing OK: