Hello. I've seen a few more exotic builds where people have dual midranges in each A-pillar and/or dual midwoofers in each door. What's the pros and cons of doing this? I appreciate any help.
It could be more than one reason here a a couple
More cone area for a +3db gain unless they add another amp on top of that instead of splitting wattage which would then be +6db gain.
Adding the ability to add a 4 way or more front stage setup to split frequencies like I am doing in my system build. The hardest issue with this is phase and tuning the more drivers you split into the more difficult it will be to make it work correctly but it also means if you can set it up correctly it will sound most likely better as well depending on the tuner of course. When you split audio frequencies it needs less work on other things other ranges because it’s more dedicated towards for example 200hz-500hz vs 200hz - 4000k.
This is also a few other reasons such as 5.2 or 6.1 7.1 and etc. and yes I meant 5.2 as it could be the others 6.2 7.2 as examples. Each users build are dependent based on their goals.
Some other will also give some great advice as well because They will say don’t do it. It’s honestly a difficult things to achieve the more you get into more drivers more processing channels. But is could also just be someone doing a dual stereo setups running L/R on each driver vs L+R. As I said everyone has different goals.