To convert your passive subwoofer to an active subwoofer, you will need an amplifier. In most cases, a powered subwoofer already has its own built-in amplifier, so you won't need an additional one. However, if your passive subwoofer doesn't have an amplifier, you can connect it to an external amplifier to make it active.
Here's how to do it:
1. Make sure you have an amplifier with enough power to drive your subwoofer.
2. Connect the amplifier's output to the input of the subwoofer using speaker wire.
3. Adjust the settings on the amplifier, such as volume, crossover frequency, and phase, to match your preferences and the specifications of your subwoofer.
4. Power on the amplifier and test the subwoofer to ensure everything is working properly.
Converting your passive subwoofer to an active one allows you to have more control over the sound and optimize its performance for your specific setup.