Choosing a Crossover Frequency

In order to make an intelligent choice of crossover frequency, we need to look at the on- and off-axis frequency response. If the off-axis response is falling off too much at the frequency we choose for the crossover(beaming) the combined frequency response may look good on axis, but will have large dips off-axis. This is what is known as poor power response. What I would like to see is a frequency response that maintains the same shape as you move farther off axis but decreases slightly in magnitude.

Looking at the midrange data at 0, 15, 30, 45 and 60 degrees we see that there is no significant falloff above 2000 Hz until the 60 degree measurement.

The tweeter also shows excellent horizontal dispersion with a smooth rolloff above 45 degrees.

Based on all this, 2000 Hz looks like a good place to start our crossover development. Let's get started with an overview of Calsod.

Go to Introduction to Calsod.