> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sigbergaudio.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Presets

> The three crossover and EQ presets on the Sigberg Audio subwoofers, and when to use each.

Your subwoofer has three presets for crossover and EQ. Their features and use cases are described below, but feel free to experiment with what works best for your setup.

Click the **select** button on the back of the subwoofer to switch between presets. The green LED lights marked P1 / P2 / P3 will indicate the active setting.

| Preset | Name | Use it when |
| - | - | - |
| P1 | Default (300 Hz low-pass) | Connecting to a surround receiver/processor or stereo amplifier with active subwoofer support. |
| P2 | Sigberg Audio loudspeakers | Using the subwoofer with Sigberg Audio SBS or Manta speakers. |
| P3 | Stereo (45 Hz low-pass) | Connecting to a stereo amplifier without crossover capabilities, with the speakers playing full range. |

> [!NOTE]
>
> A subsonic filter and built-in limiter is enabled in all modes to protect the subwoofer.

## Preset 1: Default (300 Hz low-pass)

This is the default setting, and recommended for most situations (both music and movies) where an external crossover / low-pass filter is available. If you have an AVR, surround processor or modern preamp/streamer, this will likely be the right choice.

Run the room correction software on your AVR/processor (if available) while in the default preset 1 setting, and the subwoofer gain set to the default 12 o'clock setting.

A slight increase (3 to 6 dB) in subwoofer volume is often necessary to compensate after the room correction procedure is completed. You can do this by carefully adjusting the gain either on the subwoofer, or in the Levels menu of your receiver until you are happy with the level of bass.

> [!WARNING]
>
> Keep the subwoofer level on your receiver at -3.0 dB or below to avoid distortion.

You may also manually experiment to set the preferred crossover for the subwoofer. Please refer to your receiver or processor user manual on how to adjust gain and crossover.

To get the most out of your subwoofer and increase the headroom of your main speakers, we recommend a crossover of 80 Hz or higher for most speakers. As high as 100-120 Hz may work well.

Unlike many subwoofers, our subwoofers will happily reproduce punchy, clean bass all the way up to 300 Hz.

## Preset 2: Sigberg Audio loudspeakers

In this setting the subwoofer crossover point is optimised to blend in with the Sigberg Audio SBS and Manta speakers.

Please refer to the [SBS](https://docs.sigbergaudio.com/speaker-systems/sbs/subwoofer-integration.md) or [Manta](https://docs.sigbergaudio.com/speaker-systems/manta/subwoofer-integration.md) manual for gain recommendations.

If you own Sigberg Audio speakers, but have active crossover support in your amplifier or processor and want to experiment with different crossover settings, please use preset 1.

## Preset 3: Stereo (45 Hz low-pass)

Use this setting when you connect to an amplifier without crossover capabilities, and your loudspeakers are playing full range. The subwoofer will provide low-end extension beyond what the speakers can output.

A fixed crossover of 45 Hz is enabled to minimize overlap with your main speakers. This setting will work well for most speakers, and if you need slightly more or less overlap, this can often be achieved simply by adjusting the gain/volume of the subwoofer.

If you need a different crossover, this can be defined manually in the subwoofer's internal EQ software. See [Defining crossovers](https://docs.sigbergaudio.com/subwoofers/equalizer.md#defining-crossovers).


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