Dependent on your desired setup, there are a few different ways to connect your Minx X301 subwoofer.
1. If you are using a two-channel hi-fi system, then use the left and right line input connections to connect your Minx X301.
2. If you are using a receiver, or amplifier with a dedicated sub out then connect the Minx X301 using the left channel (LFE/Sub) input.
3. Once connected you can decide where to position your subwoofer. As low frequency content is largely unidirectional, you can experiment to find a place that suits your setup. Please see the below diagram for suggestions on placement dependent on your speaker configuration.
4. Use the crossover frequency, phase, and volume controls to adjust the subwoofer output to fit with the rest of your system, and your requirements.