WHY A HAND SHAPED CYMBAL?
If the design goal of a cymbal is complexity and a large spread with a good balance of lower frequencies, hand shaped cymbals are far superior to those that are pressed into shape.
A cymbal which is pressed into shape is inherently simple because of the even overall compression and activates fewer frequency systems. The simple tonal structure isn’t very pleasing to the ear and needs further processing to create complexity and a more pleasing sound.
The evenly compressed foundation also raises the overall tessitura and reduces the lower spectrum of the spread.
Additional hammering on such a foundation has a more limited impact overall (primarily because of the large overall compression from the shaping press) and the increased speed of the soundwaves through the plate, limits the activation of lower frequencies in fundamentals, partials and overtones (both harmonic and inharmonic).
Often very deep machine hammering is used to ‘cheat’ complexity, but this usually has the side effect of increased trash and diminished dynamic potential.
A cymbal which is shaped by hammering has thousands of marks of higher compression surrounded by areas of less compression.
Sound waves reflect from boundaries between differing shape and density within the same material, therefore creating a base of complexity and multiple complex frequency systems.
The areas of less compression facilitate a good presence of lower frequencies.
I believe a hand shaped foundation combined with additional hammering is the secret to the old k sound and the old k ability to possess a great low and high end presence.
Part of the upper register characteristic is also due to the increased brittleness of bronze with age.
This ageing characteristic is much more beneficial to a cymbal which was shaped by hand rather than pressed into shape.