Respectfully, your friend from the speaker company is clueless. There are literally hundreds of recordings that don’t suffer from the problem you’re referencing because the engineer and producer know what they are doing. Here is a video that deals with some of the nuances of both recording and reproducing: https://youtu.be/h9dv9AVVHT4
The bottom line is some of the best mics to record violins or any acoustical instruments are being made now. Conversely ribbon mics of the 1930s were also marvelous at recording the great orchestras of the Golden Age. Look for Cleveland Orchestra with Szell and Chicago symphony with Reiner as a start and you will hear breathtaking sound. Let me know what you think of the video and what your conclusions are.
The bottom line is some of the best mics to record violins or any acoustical instruments are being made now. Conversely ribbon mics of the 1930s were also marvelous at recording the great orchestras of the Golden Age. Look for Cleveland Orchestra with Szell and Chicago symphony with Reiner as a start and you will hear breathtaking sound. Let me know what you think of the video and what your conclusions are.