nice lake new used 2 times only TTS56-A 2x21" Powered Subwoofer from RCF  Priced each 4 available immediately more to follow These subs are in good shape and I have a lot to sell. Please contact me if you have any questions. The TTS56-A is a high power, high output active subwoofer system that sets a new standard in the touring sound reinforcement.  The new 21" neodymium design represents the result of many years dedicated in pioneering new solutions for the transducers technology. The integration of the 6800 W, two channel digital amplification and the advanced digital processing set a new standard for distortion, noise and thermal efficiency. FEATURES 2 x 3400 W digital amplifiers 2 x 21" high power neodymium woofers 96 kHz, 32 bit DSP processing Remote monitoring and control Time delay alignment Cardioid preset for groups Tour grade cabinet RDNet on board Maximum output per size on market ACOUSTICAL SPECIFICATIONS Frequency Response -3 dB:30 Hz ÷ 100 Hz Max SPL:145 dB Woofer:2 x 21" neo, 4.5" voice coil INPUT/OUTPUT SECTION Input connectors:XLR, Ethercon Output connectors:XLR, Ethercon Input sensitivity:-2 dBu / +10 dBu PROCESSOR SECTION Protections:thermal, excurs., rms Limiter:soft limiter Controls:DSP controlled AMPLIFIER SPECIFICATIONS Total power:6800 W RMS Low frequencies:2 x 3400 W RMS Cooling:convection/forced Connections:powercon CABINET Cabinet Material:baltic birch plywood Hardware:2 x steel bar for fork-lift transportation, 4 x 100 mm wheels Handles:6 side PHYSICAL SPECIFICATIONS Height: 40 inch Width: 47 inch Depth: 40 inch Net Weight: 295 lbs