I Was Considering Active, Then I Watched This ...


high-amp
My understanding is that to run in an active configuration that the amps neednt be inside the speaker.The conveniance of having the whole lot in one package appeals to our sense of tidyness,the advantage is the direct amplification without a passive crossover. 
An active speaker can:

- correct for unit to unit driver variation better than the best manufacturing


- tune the crossover perfectly in frequency and time for the exact drivers in every unit produced


- correct for phase across the whole frequency spectrum

- use current feedback from the driver to implement distortion reducing drive

- use position feedback to reduce distortion

- use feed forward control methodologies to reduce distortion


... As a start


External amps will never be able to accomplish what internal amps will be capable of if accurate sound reproduction is your goal.
A lot of mis-information in that Guttenberg article.
Almost none of his generalisations are true of ATC.
- All amplification made in house and has been for decades
- No DSP, all analog active crossovers with class A/B output 
- exemplary reliability as required by around the clock studio use
- Service/replacement of active amps available for models that are decades old
Not sure if Steve is just ignorant or has gone soft in the head?