After unpacking your speaker system you should take a good look at it in order to understand it better. As you could see on Figure 1, on our system the subwoofer and volume control were on different units, which is great, because this way we can put the subwoofer under our table and the volume control unit on the table, making it easier to control the system.
First, let’s take a look on the regular speakers from the system (see Figure 2). As you can see there is no mystery here. It has a two-wire cable connected to a RCA male connector.

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Figure 2: One of the speakers from our system.
Now let’s take a look on the subwoofer, Figure 3. In some systems the cables from the speakers are connected to the subwoofer. On our system, however, all cables should be connected to the volume control unit, as you can see on Figure 4.
On our system, from the subwoofer come three sets of wires: a power cord to connect the system to the AC outlet, a power connector to feed the volume control unit and the subwoofer wires.

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Figure 3: The subwoofer.
As we mentioned, on our system all cables should be connected to the volume control unit, as we show on Figure 4.

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Figure 4: Volume control unit.