ATC SCM19A - Pair of Active Floorstanding Speakers

They boast a 182W Class AB bi-amp module inside each speaker, custom designed and manufactured by the English brand itself and split into 32W for the tweeter and 150W for the bass driver.

Two MOSFET transistors are reserved for each channel, which is equivalent to four output stages managed by three separate secondary power supplies to “scale” the power according to the frequency band and driver requirements.

The active crossovers are of the fourth order Linkwitz-Riley type at 380 Hz and 3.5 kHz with built-in phase compensation. Thanks to the direct connection between the power amplifier and driver, each amplifier does not have to manage the entire audio spectrum, but only a certain portion of frequency, thus simplifying the work of the amplifier itself. The result is better control, more accurate management of the crossover points and therefore less distortion.