Subwoofers are an essential component of audio systems, responsible for delivering deep and powerful bass frequencies. In many audio setups, subwoofers are paired with external amplifiers to achieve the desired bass performance. However, there are subwoofers available with built-in amplifiers, offering a compact and convenient solution for enhancing bass. In this article, we’ll explore the concept of subwoofers with built-in amplifiers, their advantages, and considerations for using them in your audio system.
Understanding Subwoofers with Built-In Amplifiers
Subwoofers with built-in amplifiers, often referred to as “powered” or “active” subwoofers, are designed to simplify the process of adding deep bass to your audio system. These subwoofers incorporate an amplifier within the subwoofer enclosure, eliminating the need for a separate external amplifier to power them. Here’s how they work:
- Built-In Amplifier: Powered subwoofers feature a built-in amplifier that is matched to the specific subwoofer’s power requirements. This amplifier is responsible for powering the subwoofer driver.
- Audio Input: Powered subwoofers typically have line-level inputs (usually RCA or LFE) that allow you to connect them to your audio source, such as an A/V receiver, home theater system, or car stereo.
- Crossover and Controls: Many powered subwoofers include adjustable controls for parameters like crossover frequency, phase, and volume. This allows you to fine-tune the subwoofer’s performance to suit your audio setup.
Advantages of Subwoofers with Built-In Amplifiers
1. Convenience:
One of the most significant advantages of powered subwoofers is their convenience. They simplify the setup process since you don’t need to select and install an external amplifier. This is especially appealing to those who may not have technical expertise in matching amplifiers to subwoofers.
2. Space-Saving:
Powered subwoofers are compact and self-contained. They are an excellent choice for setups with limited space, such as small rooms or car audio systems where space is at a premium.
3. Reduced Wiring:
Since powered subwoofers have amplifiers built in, you’ll have fewer cables and wires to manage in your audio setup.
4. Simplified Integration:
Powered subwoofers often include features like automatic signal sensing, which enables them to turn on and off based on the presence of an audio signal. This simplifies integration into your system.
5. Optimized Pairing:
The amplifier in a powered subwoofer is designed to work seamlessly with the subwoofer driver. This ensures that the subwoofer operates at its peak performance, eliminating the guesswork of amplifier-subwoofer matching.
Considerations for Using Powered Subwoofers
While powered subwoofers offer convenience and simplicity, there are some considerations to keep in mind:
1. Power and Performance:
Powered subwoofers come in various power ratings. Consider your room size and audio preferences to select a powered subwoofer that can deliver the bass performance you desire.
2. Placement:
The placement of the powered subwoofer remains essential for achieving optimal bass response. Experiment with subwoofer placement to find the best spot in your room for balanced bass distribution.
3. Integration:
Ensure that the powered subwoofer is compatible with your existing audio equipment. Check for available inputs and consider any special features or adjustments you might need for your specific setup.
4. Cost:
While powered subwoofers simplify the setup, they can be more expensive than passive subwoofers without built-in amplifiers. Weigh the convenience against the cost when making your decision.
Conclusion
Subwoofers with built-in amplifiers, or powered subwoofers, provide a practical and efficient solution for adding deep bass to your audio system. Their convenience, space-saving design, and simplified integration make them an attractive choice for a wide range of setups, from home theaters to car audio systems. When selecting a powered subwoofer, consider factors like power, placement, and compatibility to ensure it complements your audio needs and enhances your listening experience. Whether you choose a powered subwoofer or a passive subwoofer with an external amplifier, the ultimate goal is to achieve the bass performance that complements your audio setup.
