BRC SCP118 patented  Low extended Driver technology that provides a very low-frequency response and no distortion, increased sensitivity, extended bandwidth, and improved phase coherence. High frequencies are handled by SCP118 4″ voice coil, 4.5″ voice coil, 5″ voice coil, or 6″ voice coil. Low-frequency drivers use BRC patented Progressive Transition Wave guides which offer dramatically advanced constant beam width and directive, lower distortion, and overall smooth frequency response free of high-Q peaks. The SCP118 Series multi-ply enclosures are manufactured with precision CNC engineering techniques that allow precise tolerances and consistent production. SCP118 Series is compatible with GOOD QUALITY AMPLIFIER, with low-frequency processing, ensuring that SCP118 Series enclosures are optimally processed. The SCP118 Series integrates with BRC Performance Manager which guides the system design for the best results.