 Modern speaker boxes are generally smooth and rounded. Old school “classic” boxes have square corners, and worse yet, grill covers with mounting trim strips that holds the fabric flat. Is this just styling… or is it? In the beginning of Hifi, the goal was “high fidelity”, in other words to have musical sounding sound emanating from the speaker. Once the fidelity part of speaker making was figured out a new concept became in vogue – imaging. Why is it that old school speakers don’t image as well as modern speakers? Edge reflection and diffraction effects. |
The speaker grill trim causes edge reflections in the higher frequency wavelengths, 3” and shorter, 4k Hz and higher, pretty much found in the harmonics above the highest note in the piano keyboard.
