Features:
1" (25 mm) fabric dome
1" (25 mm) voice coil on aluminum former
Ferrofluid-filled gap for superior heat dissipation and increased damping at resonance
Neodymium motor with copper pole piece cap
Bucking magnet for increased sensitivity
Reflection-absorbing and diffusing foam pad under diaphragm for smooth frequency response
Screw terminals
Industry-leading mounting kit included
Hex screws and tools included
Designed for use with GS40, GS60, GS410C and GS610C

Specs:
Nominal Impedance: 4 Ohm
RMS Power Handling: 70 W (with recommended crossover)
Peak Power Handling: 200 W (with recommended crossover)
Frequency Response: 1.8 kHz - 20 kHz
Sensitivity (2.83V / 1M): 92 dB
Recommended Amplifier RMS Power Range: 15 W - 75 W
Recommended High Pass Filter Frequency and Slope: = 3.5 kHz, = 12 dB/oct