Understanding Guitar Transducer Howling When Used with Pedals

A common issue faced by guitarists, especially those using acoustic guitars with transducers, is the problem of howling or feedback when these instruments are run through guitar pedals. This article explores why this phenomenon occurs and provides effective solutions to address it.

Why Do Guitar Transducers Sometimes Howl?

Seeing as you mention transducers rather than pickups, we can infer that you are dealing with an acoustic guitar that has been equipped with a pickup system for use with amplifiers or pedals. The howling noise, often described as feedback, is a common issue that arises from the interaction between the sound waves produced by the speakers and the vibration of the guitar body.

What Causes the Howling?

The feedback occurs when the amplified sound emitted by the speakers hits the guitar body and is picked up by the transducer. This captured sound is then sent back through the amp, creating a continuous loop that results in the howling noise. Essentially, the sound waves from the speakers are picked up by the transducer, amplified, and then sent back to the speakers, leading to a vicious cycle and the noticeable feedback.

How to Prevent Guitar Transducer Howling

Fortunately, there are several methods you can use to minimize or eliminate the howling issue. One of the most effective solutions is to use a guitar sound hole cover. These covers reduce the resonant air flow that can contribute to feedback by disrupting the air currents around the sound hole, thereby reducing the transmission of vibration to the pickup. However, it is crucial to get a cover that fits your specific guitar model and is designed for this purpose.

Choosing the Right Sound Hole Cover

When selecting a sound hole cover, it is important to consider a few key factors:

Fit and Compatibility: Ensure that the cover you choose is specifically designed for your guitar model. An improper fit can lead to continued feedback issues or even damage to your instrument. Quality Materials: Opt for covers made from durable materials that offer optimal sound deadening properties. Materials like dense foam or rubberized fabrics are commonly used for this purpose. Aesthetic Considerations: While sound optimization is the primary concern, many covers are available in different colors and designs, allowing you to choose one that matches your guitar's aesthetic.

Alternative Solutions

While a sound hole cover is a straightforward and effective method, there are other steps you can take to prevent or reduce feedback:

Adjusting Placement of the Transducer

The position of the transducer can significantly impact the occurrence of feedback. Experiment with different locations to find the sweet spot that minimizes the noise. Placing the transducer away from the sound hole may help reduce the amount of sound feedback, but this can also affect the overall tone of the guitar.

Using Acoustic Guitar Isolators

Acoustic guitar isolators, which are designed to absorb vibrations, can be a valuable addition. These devices are typically placed between the guitar body and the transducer. They help to dampen unnecessary vibrations that might otherwise be picked up by the pickup and contribute to feedback.

Adjusting Guitar and Amplifier Settings

Finally, ensure that both your guitar and amplifier settings are optimized for performance. Adjusting the tone and volume controls on your guitar and the EQ settings on your amplifier can help to reduce feedback. Experiment with different settings to find the best balance for your playing style.

Conclusion

While the issue of howling or feedback when using a transducer with guitar pedals can be frustrating, several practical solutions exist to address it. From using a sound hole cover to adjusting your guitar and amplifier settings, taking the appropriate steps can significantly improve the clarity and quality of your sound. By understanding the root causes and implementing effective solutions, you can enjoy a more pleasurable and focused playing experience.