Aluminum Die-cast cup in select models and acoustic head act as a heat sink for dissipating heat produced by the voice coils contributing to long and trouble-free service.ROXY Driver Units are weather proof and are made of rugged construction to withstand vibration and damage.The high Sound Pressure level (SPL) achieved produces a clear crisp and intelligible sound of high level, thus consuming less power from the amplifier.The voice coils used are precision wound on an aluminum bobbin.

Aluminum Die-cast cup in select models and acoustic head act as a heat sink for dissipating heat produced by the voice coils contributing to long and trouble-free service.ROXY Driver Units are weather proof and are made of rugged construction to withstand vibration and damage.The high Sound Pressure level (SPL) achieved produces a clear crisp and intelligible sound of high level, thus consuming less power from the amplifier.The voice coils used are precision wound on an aluminum bobbin.