QSC RMX 2450 PA power amplifier + Electro Voice (EV) ELX112 12-inch two-way full-range PA speakers top and Electro Voice Compact 12-inch PA subwoofer. This 4 speakers powered by one very powerfull QSC RMX amplifier, this amplifier are to much power for this speakers. Excellent amp for price. Subwoofers SB122 also have nice performance, 99 db at 1w give very powerful punch/kick bass, very compact. Top have only nice price, sound are average, only 94db/1w sensitivity. EV made very nice price/perfomance speakers! The RMX-2450 are best choice, RMX-850, RMX-1450 and RMX-1850HD are too weak, but RMX-4050 and RMX-5050 are too powerfull and too heavy. Setup specifications: PA amplifier QSC RMX2450: - 2x500w at 8ohm - 2x750w at 4ohm - 1x1500w at 8ohm - 1x2400w at 4ohm - SNR 100db - THD less then 0.03% - Damping Factor more then 300 - size 2 rack space - Weight 20,2kg PA Electro Voice ELX112: - Power rms/peak 250/1000w - Frequency Response (-3 dB) 82 - 18000 Hz - Sensitivity 94dB/w - Max. SPL/1m (calc) 134dB - Drivers 12" + 1,5" - Impedance 8ohm - Weight 16 kg PA Electro Voice SB122: - Power rms/peak 400/1600w - Frequency Response (-10 dB) 43 - 200 Hz - Sensitivity 99dB/w - Max. SPL/1m (calc) 131dB - Drivers 12" - Impedance 8ohm - Weight 14,6 kg Video taken with Nikon D5100 DSLR + Tamron 17 -50mm f/2.8 Sound recorded with Zoom H1 recorder Royalty Free Music by http://audiomicro.com/royalty-free-music