Home made. Just makes them easier to handle and stack. The crossover is stripped down to L-Pad (attenuator) only.

Regarding the original premise of this thread, new speaker technology vs old, I don't believe there is a definitive answer. There are many other variables to consider i.e., type of amplification and music being two.

An analogy may be made to a guitar. Speakers can be like an instrument. Acoustic guitars range in sound quality and tone based on their construction. Electric guitars vary more based on their electronic components.