Crossover When Polestar designs speakers we take many things into consideration. First we need to consider what the speaker will be used for. Next, we design the shape and the outward appearance of the speaker, as well as the box capacity. We also need to determine how many ways to use with the crossover. After these steps have been taken, we start to fine tune the crossover, meanwhile use computer as assistant equipment. The final step is human ears testing. This process is repeated many times and the speaker with the best sound is selected for our clients. All of the parts used in the assembly of our speakers were chosen for their excellent quality within specific tolerance in order to meet the expectations of our original design.