Calculating Q for each speaker at various frequencies

To calculate Q for each speaker at various frequencies, please refer to the ‘Beamwidth’ plots on the data sheets of the products in use or desired to be in use.

These plots provide horizontal and vertical beamwidth data for each product across its operating range which can be used to calculate ‘Q’.

One online tool that works great can be found here:
http://www.mcsquared.com/Qcalc.htm