Active subwoofers, also known as powered subwoofers, have a built-in amplifier that powers the subwoofer driver. On the other hand, a traditional amplifier is typically used to power passive speakers. If you’re wondering whether it’s possible to connect an active subwoofer to an amplifier, this article will provide you with the information you need.
Understanding Active Subwoofers: Active subwoofers are designed to receive a line-level audio signal directly from a preamplifier or source device. They have their own built-in amplifier, which means they don’t require an external amplifier to power the subwoofer driver. The amplifier inside the active subwoofer is specifically designed to match and optimize the performance of the subwoofer driver.
Connecting an Active Subwoofer to an Amplifier: In most cases, it is not necessary or recommended to connect an active subwoofer to an amplifier. The active subwoofer is designed to receive a line-level signal directly from a preamplifier or source device, such as a home theater receiver or audio interface. The line-level signal carries both the audio signal and the necessary power for the subwoofer’s built-in amplifier.
However, there may be situations where you have a specific need or preference to use an external amplifier with your active subwoofer. In such cases, it is important to ensure compatibility and follow the appropriate connection methods. Here are the steps to consider:
- Check the available connections on the active subwoofer:
- Determine if the active subwoofer has line-level inputs (such as RCA or XLR) or speaker-level inputs.
- Some active subwoofers may have both line-level and speaker-level inputs, providing flexibility for different setups.
- Determine the output capabilities of the amplifier:
- Verify if the amplifier has a dedicated subwoofer output or a full-range speaker output that can be used with a crossover.
- Connect the active subwoofer to the amplifier:
- If the active subwoofer has line-level inputs, use an appropriate cable (such as RCA or XLR) to connect the subwoofer’s input to the amplifier’s subwoofer output or dedicated line-level output.
- If the active subwoofer only has speaker-level inputs, connect the amplifier’s speaker output to the subwoofer’s speaker-level inputs using speaker wire.
- Configure the crossover and settings:
- Set the crossover frequency on the active subwoofer according to the specifications provided by the manufacturer.
- Adjust the amplifier settings, if available, to optimize the integration of the subwoofer with the main speakers.
It is worth noting that connecting an active subwoofer to an amplifier may not always yield optimal results, as the active subwoofer is already designed to operate with its own built-in amplifier. However, if you have specific requirements or limitations in your setup, this connection option can be explored with caution.
Conclusion:
In most cases, it is not necessary or recommended to connect an active subwoofer to an amplifier. Active subwoofers are designed to receive a line-level audio signal directly from a preamplifier or source device. However, if you have a specific need or preference to use an external amplifier with your active subwoofer, it is important to ensure compatibility and follow the appropriate connection methods. Be mindful of the performance and integration considerations, and consult the user manuals of your subwoofer and amplifier for specific guidance.
