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How to setup your subwoofer with the right subwoofer wiring diagram

Easy steps to correctly set up your subwoofer wiring diagram: Each situation is a little different so our goal is to show you how to understand the current flow.

Step 1: Look for a sub pre out on the back of the receiver or processor. This would be a small RCA jack, often black in color that says sub. It would be under the heading outputs or pre-out. This is the output that will send the audio signal to your sub using sub woofer cables.

This RCA jack will send audio from your receiver to the subwoofer using the built in crossover of the receiver. By using these connectors you will not need to use the crossover that is built into the subwoofer itself.

If your subwoofer cannot disable its own crossover just set the crossover knob to its highest setting. You don’t want two crossover filters to be used at the same time as using both of these will double the slope for the subwoofer, making the bass roll off too steep at the selected frequency range.

Step 2: Setting up the crossover within your receiver or processor

Within your menu system you will need to set the crossover to the correct setting that your main speakers and subwoofer can handle. For small speakers, this will be between 100Hz and 200Hz. Many small speakers cannot handle bass lower than 150Hz or so. If you do not send the correct signal damage to your voice coils may occur. Try our ELA-1 subwoofer kit, its affordable and offers all the performance of the ELA-1 sub for less investment.

You can also use the stereo outputs and run stereo signal to your subwoofer. For this you will need a set of stereo RCA cables and connect to both the right (red) and left (white) jacks on the back of the subwoofer.

Here’s what the signal flow will look like:

Just follow the signal flow beginning with the DVD player.

• From; DVD player outputs (can use digital or multi-channel outs)

• To; Receiver inputs digital or (can use multi-channel inputs also)

• From; receiver subwoofer output (or sub pre-out)

• To; subwoofer input (you may have both a red and white RCA jack, just connect to one of them)

Where some users get confused

The receiver actually has its own amplifiers built in and also drives the main speakers. So the receiver serves double duty. It directly drives the main speakers and also provides the signal for the subwoofer, but the subwoofer itself amplifies the signal from the receiver. The receiver should just be performing the crossover of the subwoofer only in this installation.

For some installations you may wish to have the subwoofer x-over perform the filter slope for itself. When you have large main speakers and do not need to keep the bass out of the mains, then use the crossover on the subwoofer only.

Summary for subwoofer wiring diagram

The signal will run from the outputs of one machine to the input of the next machine. You need to establish the source components which are the DVD player or computer, then to the receiver, and finally the subwoofer.

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