I would not change your system to accommodate the speaker's inherent problems. If you go on a wild goose chase looking for different electronics, you could spend more money, and get few positive results.
If you can, I would return the speakers to the dealer and get a refund, and start over again looking for a similar sounding speaker that has more dynamic capability.
If you can, I would return the speakers to the dealer and get a refund, and start over again looking for a similar sounding speaker that has more dynamic capability.