FBT comprises four custom 6.5" inch woofers

2-Way Bi-amplified Equipped with: 4x 6.5" neodymium bass speaker and 1x 1.4" neodymium tweeter 600 W Class D amplifier for bass range 300 W Class D amplifier for high frequency range Built-in switching power supply DSP processor with 8 equalizer presets Frequency range: 65 - 20000 Hz Maximum level: 133 dB Coverage pattern: 100° x 25° XLR input and output Power Twist input and output Housing made of birch multiplex wood Dimensions: 190 x 1140 x 290 mm Weight: 28 kg Colour: Black