Featuring no less than four 165-mm (6.5-inch) rubber surround bass and sub-bass drivers, the Skytronic SHFT57B T100.325 stereo speakers make a bold statement. The mid-range unit has a diameter of 165 mm (6.5 inches) and has a twin-cone Mylar construction with the tweeter being a 25-mm (1-inch) soft-domed unit. These stereo speakers have a total power rating of 300 watts RMS each, which translates to 600 watts Peak Music Power (PMP). These Skytronic SHFT57B speakers have a frequency response from 20 Hz to 20 kHz (± 3 dB) which means both the lowest bass notes and the highest treble sounds will be reproduced clearly and cleanly. They have a sensitivity of 88 dB at 1 watt at 1 metre. Each Skytronic SHFT57B T100.325 speaker has an impedance of 4 Ohms, making them suitable for most heavy-duty amplifiers on the market. The Skytronic SHFT57B speakers have 4-mm banana-plug type binding posts. External dimensions of the Skytronic SHFT57B speakers are 220 mm (8.7 inches) wide by 325 mm (12.8 inches) deep by 1110 mm (43.7 inches) in height and each one weighs 12 kg (26.5 lbs).