Durable Plastic+Metal Material Audio Passive Radiator Enhancing the Bass Stable to Use No Voice Coil or Drive Magnet

Description: 100% brand new and high quality Features: It is used to replace the inverted tube. Made of high-quality material durable and stable to use. A passive radiator is used to adjust the bass the designer can adjust the overall tone of the speaker. The radiators have great effect on enhancing the bass bass booster convenient debugging. Each speaker behind with a bass diaphragm right unit can increase the lower potential of the bass the sound more excellent. Attention: it is passive radiator not speaker.No voice coil or drive magnet. Passive Radiator only other accessories demo in the picture is not included! Specifications: Item Type: Passive Radiator Material: Plastic+Metal Size: (Optional) 4 inch: horn diameter: 116mm/4.5in diagonal twisting hole spacing: 108mm/4.2in opening hole: 95mm/3.7in counterbore depth+height: 2.5mm+33mm/0.09+1.2in 5 inch: horn diameter: 147mm/5.7in diagonal twisting hole spacing: 139mm/5.4in opening hole: 118mm/4.6in counterbore depth+height: 3.8mm+37mm/0.14+1.4in 6.5 inch: horn diameter: 178mm/7in diagonal twisting hole spacing: 168mm/6.6in opening hole: 145mm/5.7in counterbore depth+height: 4mm+47mm/0.15+1.8in Color: Black Quantity: 2 PCS Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors the picture may not reflect the actual color of the item. Thank you! Package Includes: 2 x Passive Radiator