Hello John and welcome to the Shack!
Quote:
johnwestcoast wrote:
 My fronts are Infinity RS 525s: The frequency response is 52Hz-25KHz +/- 3 db
The crossover frequency is 2800 KHz (I don't know what that means). |
2800KHz is the crossover point in your 525's between the woofer and the tweeter. In your case it's not a spec that will mean a lot to you as far as setting your receiver crossover points.
The general rule is 80Hz for most setups, although 100Hz will work. You might try both and see which you like.
For the mains, center and surrounds, the receiver is going to direct all frequencies above 80Hz or 100Hz, whichever you choose, to the appropriate speaker and anything below that will be sent to the sub. Those are considered "high pass" crossovers. Make sure you set the sub crossover the same as the mains. The sub crossover is a "low pass" crossover and all the lows below its crossover setting will be sent to it. Not knowing the specs on the surrounds you might set them at 100Hz, until you find out what their frequency response is. You can always test them, if they seem strained, turn the crossover up.