Dear
@Rexp and
@godofwealth,
IMHO, there is no real 3D imaging in most of the music we listen to—no stage depth either. Almost all modern music is recorded using multi-mic setups, with microphones placed very close to each instrument.
There are exceptions, such as classical recordings from the ’50s and early ’60s made with just two or three microphones positioned above the conductor’s head, or some very early mono recordings made with a single mic. Another rare exception is Ken Christianson’s “True Stereo” recordings for the Naim label. But for the vast majority of music, close-miking dominates.
In many cases, the 3D image or stage depth people talk about is actually a product of the listening room’s reverberations and reflections—and the placement of the speakers. These spatial cues aren’t captured by the microphones to begin with. Put on a pair of proper headphones and you’ll notice how that artificial 3D image vanishes. It’s just room echo.
Systems that rely on this kind of artificially produced imaging often struggle to reproduce electronic tracks or synth pop with strong bass and high BPM. Why? Because the artificial “3D image” continues to linger even after the actual signal has stopped and a new one has started. These setups simply can’t handle electronic, pop, or most rock music at high levels.
You don’t have to like that kind of music—but it’s great for testing. For example, play Billie Jean from Thriller. If you can clearly follow every note of the synth bass and all the details are crisp and distinct, then your system’s doing fine.
IMHO it’s better to focus on how realistic the instruments sound, how lifelike the sound in general, does it keep you continue listening or not when evaluating an audio setup instead of descriptions like 3D image.