Why are the Infinity IRS, Reference 1b, Beta ect speakers passive on the mids and highs?

Not sure If I can add much to this discussion but active crossovers would have been more expensive at the time. The system was already expensive when you add the amp and other requirements. I own two sets of the RS1B woofer towers and the servo controller. These parts are getting old and my servo now has a low level hum that it didn't have before. I now use an active crossover without the servo system and get very satisfactory results. The RS1B was a great system but after listening to the Infinity Emits and Emims for the last 4 decades I have moved on.  

One of my best friends on the planet is an old timer very respected figure in the audio world.  He uses a 12v crossover with a passive sub, of course, he modded it with some nice parts and built a fully regulated 12v supply, but it does a great job.  Years gone by, I worked for Orion. I've heard of few of their amps in home use and at one time I owned a stereo store,  we did 12v to high end...and there,  we tried a soundstream amp with some home gear... I've seen very respectable results mixing.... Never true hard core audiophile with the amps, but some truly respectable results.

Hi Russ69
Just curious. What did you move on to?
Marc

Hi Timlub
I too am in the car audio business 36 years now. I have a 100 amp Audio Authority power supply. Lots of fun listening to a lot of car audio amps through the different speakers I have. There is quite a bit of difference among brands and models.
Marc

Oh Marc,  I haven't had a stereo store in 30 years.... even though I had a good run in 12v.  My roots have always been in the Audiophile world.