Haven't thought about them in a while, but this post reminded me I've been impressed by Gershman Acoustics at shows (I'm thinking of the Avant Garde in particular) and I think at least some of their models use first-order crossovers and might actually be time-aligned too. I haven't heard them in years and I could be wrong, but might be another option worth looking into.
Let's ID Speakers with 1st order Crossover design.
Can you name a few names (speakers) with 1st crossover design? I'd like to give them a try.
Some of the fullrange single driver design would also on the look out. Best
Some of the fullrange single driver design would also on the look out. Best