Blog › Forums › DIY Speakers and Subwoofers › Argh!!! Choosing Drivers › Reply To: RE: Argh!!! Choosing Drivers
April 11, 2021 at 4:10 am
#13163

Keymaster
It is to help protect it, but in the same token it is also there to cut down on distortion. Having said that, that rule of thumb is for a second order crossover. You can switch to a third order and crossover later if the driver allows it. And although the rule is 18db down at FS, I try to be closer to 24db if I can and 20 minimum. But a lot of this will show up on your graphs when you take distortion measurements. It’s one of the main reasons you can’t just go for a linear response. You have to account for things like this.