The FBT speakers feature lightweight, yet rugged gas injected molded polypropylene cabinet construction.

The asymmetrical shape of the Maxx 4a cabinet also allows use as a powered floor stage monitor. The FBT Maxx 4a is a two-way design incorporating a B&C 12” low frequency woofer with neodymium magnet and a B&C 1.4” High frequency driver coupled to a 90°H x 60°V horn. The active internal crossover is at a fixed frequency of 1.8k. With a frequency range of 50Hz - 20kHz, the Maxx 4a provides hi fidelity sound for both speech and music applications with a maximum SPL of 123 dB. A front face steel grille protects the woofer from external damage. FBT’s ADAP® Advanced Dynamic Active Protection circuitry protects speaker/driver components against failure. The Bi amplified Maxx 4a active speaker features a 300w RMS Class D (PWM) Pulse Width Modulation low frequency amp, and a 100 w RMS Class AB high frequency amp. The control panel features a master volume control, preamp gain control, 3 band EQ with + - 15dB of cut/boost @ 80Hz LF, 12 dB of cut/boost @2.5k Midrange and + - 15 db cut/ boost @10kHz, a balanced Neutrik® input combo jack (female XLR, ¼” TRS, ¼”), balanced XLR link output jack,microphone/ line input switch, and ground lift switch, LED power on and separate HF and LF overload LED indicators.

The 4 M-10 fly points built into the cabinets, along with the optional Box 100 and Box 101 mounting brackets allow the Maxx 4a speakers to be surface mounted on walls or ceilings. A standard 1⅜ speaker stand socket allows the Maxx 4a to be mounted on speaker stands.