Monitor Audio CP-CT380 In-Ceiling Speaker Alongside a pivoting C-CAMtweeter, the CP-CT380 model introduces a powerful 8" C-CAM bass driver featuring the Rigid Surface Technology (RST) cone surface employed by our range-topping home audio speaker systems. Technology Pivoting C-CAM gold dome tweeter. C-CAM bass driver featuring Rigid Surface Technology (RST). High overall efficiency. High frequency level adjustment (+/-3dB). Boundary compensation controls. Our innovative Tri-Grip fixing system is easier to install than conventional clamping schemes but provides three times the surface area and a better surface seal, maximising bass response and mid-range clarity. Magnetic and easily removable steel grille. Paint-able surface to blend with the living environment. Additional scrim material is provided for trouble free painting. Airtight enclosure design, which protects each precision-engineered driver system against the damaging ingress of dust and dirt.