The second most important component, would be the crossover network, which in a loudspeaker system, it is imperative the crossover network is well suited for the speaker and cabinet. If this is not the case, any money spent on a good cabinet or drivers has ultimately gone to waste.
The crossover network essentially corrects phasing issues, provides a frequency crossover between the two drivers (woofer and tweeter), so the woofer only plays bass frequencies where the tweeter only plays treble frequencies - which would make sense. However, Wharfedale decided to cut some corners on the crossover.
My solution was to install a proper crossover in these speakers. The drivers are very similar to those found in the Wharfedale Programme 30D.6 speakers, and I had two crossovers left over from a scrapped pair of this model of speakers. I took the decision to rip off the hot glued crossover, so I could solder on the Programme 30 crossover which would have originally worked with more or less the same drivers and a similar cabinet.
Below is a photo of the Programme 30 speaker to the left, and the Diamond 6R to the right. They look very similar, and also sound similar thanks to the similar drivers and the same crossover.
A video of how the speakers sound can be found here: