The FBT Hi MaxX 40a is a 2-way bi-amped active speaker. It features a new proprietary designed by FBT and custom made by B&C woofer and driver. The B&C 12 inch neodymium magnet woofer uses a more efficient ventilation system results in a 1.5 decibel reduction of power compression and features a new rigid cone for increased reliability. The new B&C 1.7 inch neodymium magnet high frequency driver is coupled to a 90H x 60V degree CD horn. Completely manufactured in Italy, each FBT Hi MaxX 40a utilizes the best 1 - 5 percent military spec electronic components available in the amplifier circuitry. FBT's new Class D & G amplifiers with switch mode power supplies are light in weight but hefty in power, delivering 90% amplifier efficiency. FBT's exclusive ADAP 2 (Advanced Dynamic Active Protection) circuitry prevents component failures and thermal shutdowns on the Hi MaxX 40a. The Hi MaxX 40a gives you 2 Independent Input Channels. One XLR/combo jack, and one AUX L/R RCA jack. Volume control allows you to connect to external devices such as an MP3 player or PC. The Control Panel on the FBT Hi MaxX 40a features the same 3 band EQ, Mic/Line switching and ground lift switch as the MaxX 4a and MaxX 2a. New to the Hi MaxX 40a Control Panel is a combined Preamp Gain and Master Volume Control to precisely regulate the proper preamp gain structure in accordance with the volume out, which results in easier and quicker volume settings, superb dynamic range and signal to noise ratio. Hi MaxX 40a vs. MaxX 4a The new Class D & G amplifiers offer an increased power capacity of +200w for the LF woofer and +50w for the HF driver. Peak power has almost doubled with up to 1000 watts to the 12" B&C LF woofer. The total cabinet volume has increased by +5Lt of load to the woofer, while maintaining the same width and height of the FBT MaxX 4a - producing a more powerful (+4 dB) bass response. The reflex tuning ports are a new design and are optimized to reduce turbulence and compression. Combined Gain and Volume functions in the same rotary potentiometer offer easier and quicker volume settings and provide an improved dynamic range and S/N ration at the input stage. FBT's Hi MaxX 40a carries a three year parts and labor warranty.