[soundman98]

i'm seriously re-reviewing the specs and info on the planar tweeter and remembering that some of the reason that i'm not using it is the high crossover point. the MINIMUM crossover point is 4khz. it means that in all reality, i'd need to cross them at 5-6khz. i'd likely lean closer to 6k to avoid any immediate issues and then slowly drop them down to 5k if i could.

in the car, i use a set of 7" esoteric's. the truck runs 6.5" hds'. both start to have extremely erratic frequency response above 1khz, especially off-axis, where both have a significant drop near 3-4khz, that would fall underneath the required crossover point...

meaning that the planar tweeters would absolutely require a midrange to pick up the slack from about 800hz to the selected crossover point. with a subwoofer, it's now looking at building a 4-way setup. no deck supports 4-way, so it's all in passive crossover or dsp territory--dsp would be preferable to make it easier to balance every set of drivers, but that means an additional set of amp channels...

and this doesn't even account yet for the fact that the 1x3" dimensions mean that it wouldn't fit in the tweeter spot in these cars and would need to take over the midrange location. so now a new location would need to be found for the additional midrange...

so while they're possible, i start to run out of physical space for all the drivers required, and when i can just do 2 drivers instead of 3, planar drivers just seem to create more needs and requirements than they fix..

TLDR, i wouldn't recommend bothering with them. they might be nice in a 3-way bookshelf, but not in a space-limited vehicle install.