I bought a pair of KG4s for one of my daughters. They sounded very good mated to an old Luxman receiver. They sounded better after I switched her to a Golden Tube Audio SE-40. The sound improved even more significantly after I rebuilt the crossovers.
Look here: Klipsch Speakers - Crossover repair Kit Prices
Highly recommended.
Look here: Klipsch Speakers - Crossover repair Kit Prices
Highly recommended.