You can easily set the speaker. Rear Connection Type: Screw-on Banana Plug. Double screw system to secure the cable. High quality solderless banana plug. Compatible with 0.2 - 0.18 inch (4 - 4.5 mm) banana jack. Specifications: Material: brass, ABS resin. Treatment: Gold plated. Weight: 0.3 oz (8 g) per piece