This is from a set of speakers i was fortunate to pick up recently. 130A Woofers 275 drivers 5040 horns and N 600 network divider. I read an advertisement for the Metregon, stating this the configuration for one of the model years. I would like to have these sounding as good as possible. They sound great already. I imagine after 60 years, the crossovers should be looked at. Any help is greatly appreciated! My fist time out here so lets see what happens.