Hi rprice54,
You got the very latest version of the EP500, with the new amplifier faceplate. The On/Off filter switch at the top is the Subsonic filter, which cuts off low frequencies below 20 Hz. Leave it off unless you are playing back vinyl LPs that may generate low-frequency rumble and other anomalies.
The crossover filter should be labeled "Crossover". I'm just editing the latest owner's manual now.
Congrats on getting the T60s. I'll be interested in your feedback on their performance once they're installed.
Regards,
Alan
