As designed that model is very balanced. They are smooth, have good body, pretty good bass response, really good detail levels, etc.
How to alter the balance or change aspects of their sound:
No Rez lining of the cabinets will tighten up the bass response and clean up the vocal region a bit.
Swapping the caps out to Sonicaps will up the level of detail, resolution, and space between notes (less smearing).
Now, altering the tweeter level in relationship to the woofers can shift the tonal balance. Reducing the cap values slightly will reduce output in the crossover region if brightness is an issue.
Changing the values of the resistors in the tweeter circuit can lift the overall level, reduce the overall level, or add or reduce the overall level more or less in the top end or bottom end of the tweeter range.
So yes, I can do just about anything with them.