Check the listing for details. SB Acoustics SB21SDC-C000-4 Ring Dome Tweeter. Condition: New. Listed at 46.14 USD. SB Acoustics SB21SDC-C000-4 Ring Dome Tweeter SB Acoustics SB21SDC-C000-4 Ring Dome Tweeter Product description Highlights Large surround dome for increased acoustic output Dual balanced compression chamber for improved dynamics Copper cap for reduced voice coil inductance and minimum phase shift Saturation controlled motor system for low distortion Non-reflective rear chamber with optimized damping for improved dynamics Flow optimized vented pole piece for optimum coupling to rear chamber CCAW voice coil for low moving mass Long life silver lead wires Low resonance frequency Product details SB Acoustics SB21SDC-C000-4 Ring Dome Tweeter The SB21SDC-C000-4s large surround dome allows the increase of its acoustic output. Dual balanced compression chamber for improved dynamics. Saturation controlled motor system for low distortion and low resonance frequency. Specifications: BL Product (BL): 1.5 Tm N • Diaphragm Mass Inc. Airload (Mms): 0.25 g • Surface Area of Cone (Sd): 4.9 cm2 Show more Show less Shipping Handling time - 5 to 21 daysShipping time - 3-5 daysShipping Method - We ship only with UPS Express Stock - Not all items are in stock. They are held in several warehouses. Customs - No custom fees / Ask about invoice declaration Condition - New straight from the factory Items location - EUROPE Shipping - to the whole world. Service FOR THE BEST SHIPPING PRICE PLEASE ADD YOUR ITEMS TO CART AND REQUEST TOTAL FROM THE SELLER