brand new high quality Features: 1. Frequency Divider -- the function of the frequency divider is to separate the mixed analog audio signals into high-pitched, mid-range and low-pitched parts, and then respectively send them to the corresponding high, medium and low woofer units for playing, thereby achieving the purpose of improving the sound quality. 2. Professional --this is a tweeter+mediant+ three-way KTV, stage professional speaker crossover and DIY upgrade tool which is to improve audio quality. 3. High-quality Capacitors -- low loss and high quality, no longer have the problem of electrolytic capacitors. 4.High-quality Materials -- high temperature resistant wire, wire wound ceramic resistor and imported metal film.Over-current for protection design, simple and beautiful lines, reasonable component layout.Small switch can adjust the treble (normally 3db can be added). 5. Ensuring large load capacity, long-term durability and very good sound quality.Any questions,Please feel free contact us,we will do our best effort to serve you. Specification: Material :ABS+Metal Color : Red and Black Size : 156 x135 mm/6.14x5.31 inch Note: 1.Please allow 0-1cm size error due to manual measurement. Pls make sure you do not mind before you place order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.The size of the frequency divider is 156mmx135mm, in order to avoid unable installation, please select it according to the actual size of the speaker. Package: 1 Set Frequency Divider