Hard to define "fast" and "slow" as many other audio terms.
Assuming "fast" and "slow" refer to transient and/or impulse response, Al mentions most of the factors, with the exception of "characteristic impedance" that can impact directly or combine with the load to react. Essentially, the cable can become a storage device, storing and releasing part of the energy. Although the effect would be miniscule compared to the crossover components and voice coils (if applicable), particularly at lower frequencies.
Maybe wires need a Q rating like drivers and cabinets. And to raise the analogy: Are the MIT boxes on their cables like port tuning?
Assuming "fast" and "slow" refer to transient and/or impulse response, Al mentions most of the factors, with the exception of "characteristic impedance" that can impact directly or combine with the load to react. Essentially, the cable can become a storage device, storing and releasing part of the energy. Although the effect would be miniscule compared to the crossover components and voice coils (if applicable), particularly at lower frequencies.
Maybe wires need a Q rating like drivers and cabinets. And to raise the analogy: Are the MIT boxes on their cables like port tuning?