Car audio play active crossover, what equipment is needed?

This is a very professional issue, if the operator does not have a good theoretical basis for three-way frequency and practical experience, we recommend not to try, because the risk of damage to the equipment is relatively large. In fact, now play active three-way amplifier adjustment is relatively simple, mainly level output matching, frequency cutting and slope adjustment is now basically in the host or decoder and professional crossover equipment on the completion of the amplifier even if there is a crossover amplifier we usually do not recommend that it above the tuning, because the potentiometer error is relatively large, the accuracy is not high, which means that tuning will increase the difficulty of the A lot, not good to master.