Designed as an easily installed premium upgrade, the GS42 includes a proprietary injection-molded ABS and fiberglass vented basket. Ease of installation is ensured with a fabric dome neodymium tweeter that extends a mere 3.75 mm above the surround-sure to fit under factory grilles. The tweeter faceplate includes a small waveguide designed to boost the tweeter’s low frequencies and ensure a smooth transition to the midrange. That transition is also controlled by a 12dB/octave high pass filter and 6dB/octave low pass filter. The entire crossover network is mounted to a PC board integrated into the basket, which also secures the terminals. The GS42 includes a 1" copper voice coil wound on a Kapton® former for superior power handling. The GS42 can be used as a full range speaker or combined with a GS60 in an active system. Features: Injection molded ABS plastic and fiberglass vented basket Parabolic polypropylene cone 1" (25mm) copper voice coil on Kapton® former Flat progressive Nomex® Spider Ferrite magnet 3/4" fabric dome neodymium tweeter Tweeter includes reflection absorbing and diffusing foam pad Low-profile tweeter waveguide helps to provide smooth transition to the midrange Fast-on terminals secured with integrated PC board Integrated passive crossover (12dB/octave high pass and 6dB/octave low pass) Grille included Specs: Nominal Impedance: 4 Ohm RMS Power Handling: 50 W (with recommended crossover) Peak Power Handling: 150 W (with recommended crossover) Frequency Response: 90 Hz - 20 kHz Sensitivity (2.83 V/1 M): 88 dB Recommended Amplifier RMS Power Range: 15 W - 75 W