The FBT Subline 118SA is an extremely compact bass-reflex design subwoofer. The Subline 118SA features 0,70" birch plywood construction covered in a scratch resistant black paint with two aluminium carrying handles; an M20 top mounted stand adapter allows satellite speakers to mounted above the subwoofer cab. The sub features a 18" high excursion woofer with 3" voice coil. The cabinet provides a digital signal processor with 6 pre-sets, 4 equalization with 2 LPF crossover settings, cardioid configuration. A high end performance criteria includes a frequency response of 33Hz to 100Hz, max. SPL of 137dB peak and a powerful 1200W RMS Class D power amplifier with switch mode power supply. The control panel features stereo XLR in/out, level, EQ pre-sets, 6 steps delay, phase reversal switch 0°-180° and 3 status led indicators.