Celestion H1-8050, Horn, Horn with 1"" output (25.4 mm), Exponential horn with 80° x 50°, Crossover frequency: 1.5 kHz Crossover frequency, Material: ABS plastic, Dimensions (H x W x D) 180 x 180 x 90 mm, Weight: 0.7 kg, Colour: Black@+*Suitable for Optional Drivers:*@+@+, CDX1-1747, CDX1-1742, CDX1-1745, CDX1-1730, CDX1-1720, CDX1-1447, CDX1-1445, CDX1-1440, CDX1-1430, CDX1-1425, CDX1-1415