You are comparing very different speakers, 2-way vs. 3-way, but that's not all. The 3-way has more drivers, bigger drivers, and the drivers are arranged for optimum dispersion, so you get better off-axis response as well. It's not uncommon for a top quality speaker to reveal shortcomings in a recording... in this case, the comparison is stark as I'll wager your "poor" recording was compressed lossily, while BD audio uses lossless compression. The difference is subtle, but audible if you know what to listen for.
The driver geometry also affects spaciousness. The WMTMWs in the 350-series use larger drivers where it's needed, for bass, and smaller drivers where small size is beneficial, for dispersion through the midrange frequencies. This gives frequencies in the octaves below the 2400's 2.3KHz tweeter crossover wider dispersion, improving lateral reflections that we perceive as spaciousness.
If you want to learn about this stuff, I recommend Floyd Toole's Sound Reproduction, loudspeakers and rooms.
Everything I've said above he goes into with references to peer review journal articles to back him up. Great read, over and over....
Yes, a simple continuity check will verify speakers are functional, but so will an ear close to the speaker, and the latter will hear dynamic issues (eg. voice coil rubbing)
In their defense, the 2400's have added flexibility in the form of XO switches for bass level (boundary compensation) and tweeter level (high frequency energy). Your Onk has Audyssey which is far more sophisticated than these controls. If they're functional, the 350's are a steal!