Quote Originally Posted by marconi118 View Post
476Mg is 16ohm?

if I go with 2452HSL 8ohm, I would put 8R in series to the driver to bring it up to 16ohm and use the same crossover as yours?
In typically the drivers labeled 8 ohms have an impedance of 6-8 ohms and those labeled 16 ohms have an impedance of 12 ohms. You could fiddle around with a simple passive EQ and get an okay result. Care needs to be taken with passive EQ that it does not load down the impedance too much at high frequencies using a capacitor shunt across a series resistance. A small value inductor (0.3-0.5 mH) with a small value series power resister (2-3.9 ohms) shunted in parallel with the driver would be a good starting point. Greg Timbers has used this approach and it acts to protect the driver. This approach does not load down the impedance. It attenuates frequencies below the shunt resonance of inductor at 6 dB per octave. Then you need to have a high and low pass crossover filter.

But beyond that it’s a lot of trial and error with test microphone. Dayton make a loudspeaker measurement set up. An active crossover with your diy passive EQ is a good option.

Alternatively you might want to try the Dayton dsp crossover first to get yourself up and going as a Diy effort. Tip. When you actively EQ a driver cut the frequencies below 3-6 khertz in preference to boosting the high frequencies. This will improve the noise and distortion performance of the Dsp processor.