Dual bass crossover fever dual voice coil speaker crossover single-channel double bass audio upgrade speaker crossover. Audiophile-grade single-channel dual bass output (400W+400W), suitable for dual voice coil woofer/single channel. The double bass speakers are modified and upgraded, and the feverish sound quality awakens the buried good sounds, and you can feel the shocking sound quality of the drums! It uses 99.9% oxygen-free pure copper inductors (matched with 78mm silicon steel sheets and fixed with high-temperature resistant glue to prevent resonance), For Bass audio capacitor (5.5uF*6) Audio dedicated capacitor (10uF*2), solder-free terminal blocks are more convenient for enthusiasts to DIY modifications, and enjoy the surging sound quality. A feast of music to meet your single-channel and double-bass needs Model:ZZ-2021 (single-way double bass) Power:400W+400W Crossover point:490Hz Net weight:about 538.5g/piece Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Red Material:PCB Size:150 x 90 x 34mm Package Contents: 1 * Audio Divider Crossover Only the above package content, other products are not included. Note: Light reflection 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.