2.5 or 3 way; why one over the other?

@erik_squires
Take a look at this Spendor. Does the mid have a high pass filter? What Focal is a 2.5 way? Am I missing something? If so please explain? Thanks!
https://store.acousticsounds.com/d/94323/Spendor-Spendor_D7_Stereo_Speakers-Speakers

@yogiboy 

In a 3-way the midrange has 2 filter sections. A high pass, and a low pass. 

In the case of a 2.5 way, the "midrange" is missing the high pass filter. 

That is exactly how you define the 2.5 way speaker system. 

The woofer and tweeter filters are otherwise the same in either. 

I'm not sure about Focal's current line up, but the Focal Profile 918's were an example of a 2.5 way. 

@erik_squires
Thanks for the info!

Because the two identical drivers sound more "of a piece".

Because it's cheaper to use two identical drivers than buying separate mids and woofers.

These and a hundred other reasons.

Not all 2.5 ways have identical woofer/mids by the way.

Focal Profile 918's used two 6" drivers in a 2.5 way crossover but the top woofer had a smaller voice coil and had better high frequency extension. 

I disagree that 2.5 way speakers are designed because they are cheaper. I think they are good engineering trade-offs for a lot of rooms.