1. It adopts over-current protection device, which is sturdy and durable with long service life.2. The high-capacity part uses the famous non-inductive capacity in parallel, and the high- non- capacitor, the low-frequency part is converted by inductance to achieve a clear and full effect.3. The PCB floor adopts fireproof board, and the thicker copper layer can withstand high current.4. The use of inductance, non- high-quality capacitors, high-frequency ceramic resistors, and solder-free connection terminals its carrying capacity, long-term durability and very good sound quality.5. 150W Speaker Crossover 3 Way High-Low 4-8 Ohm Frequency Divider for SpeakerModel: 351Filtering characteristics: high, middle and low three-way frequencyMaximum : 150WFrequency response: 50Hz~20KHzWEAH-351 is a multi-stage adjustable frequency dividerApproximate frequency: treble 2000Hz-20kHzMidrange 780Hz, 820Hz to 2000Hz 50Hz, 100Hz to 900HzApplicable impedance: 4~8 ohmCenter hole distance: 88 x 58mmApplication range: used for home audio high school three-way DIY or sound quality upgradeColour: as shownMaterial: metal + plasticSize: 93 x 63 x 28mmPackage Contents:1 x speaker crossoverOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.