How to use the SMD CC-1 and the IM-SG to find the crossover frequency of a passive crossover

[carter1010]

Hello all,

It is my understanding that you can use the SMD CC-1 and the SMD IM-SG in combination to determine the crossover frequency of a passive crossover. I was looking for information on how you use these two tools together to do that. Anyone have any idea?

Thanks!

[TonyD'Amore]

You could use these two tools together, or even just the IM-SG by itself. In audio the "crossover point" is what we call the frequency where the speaker is receiving half of the power it normally would. That being said lets do an example for a 4 ohm tweeter. Tools needed, IM-SG and a small 4 ohm resistor (1/2 watt or larger). Connect the resistor to the tweeter output of the passive crossover. If the crossover has jumpers for attenuation make sure they are set at -0dB. Connect the IM-SG to the input of the passive crossover, turn the freq all the way up to 20kHz. The impedance should read close to 4 ohms. Turn the frequency down until the impedance reads 8 ohms. This would be the crossover frequency. Let me know how it goes.

Tony