Active pickups have a higher output level compared to passive pickups, making them more susceptible to feedback. Feedback occurs when the amplified sound from the guitar's speaker is picked up by the pickups and re-amplified, creating a continuous looping sound.
Several factors contribute to feedback in guitars, including:
1. High Gain: Increased gain levels on amplifiers and pedals boost the signal, making it more prone to feedback.
2. Proximity to Speakers: Placing the guitar too close to the speaker or facing the speaker directly can increase the chances of feedback.
3. Guitar Volume: Setting the guitar's volume too high can also lead to feedback.
4. Pickup Height: Pickups that are too close to the strings can be more sensitive to feedback.
To reduce feedback with active pickups, you can try the following:
1. Lower Gain: Reduce the gain levels on your amplifier and pedals.
2. Position the Guitar: Stand further away from the speakers and avoid pointing the guitar directly at them.
3. Adjust Guitar Volume: Lower the guitar's volume to reduce the overall signal level.
4. Adjust Pickup Height: Raise the pickups slightly to reduce their sensitivity to feedback.
5. Use a Feedback Reducer: Some effects pedals and amplifiers have built-in feedback reducers or noise gates to help control unwanted feedback.
6. Use a Noise Suppressor: These devices help reduce unwanted noise and feedback by cutting off the signal when it exceeds a certain threshold.
7. Proper Grounding: Ensure that your guitar and amplifier are properly grounded to minimize electrical interference that can contribute to feedback.
8. Avoid Resonant Frequencies: Certain frequencies can cause more feedback than others. Experiment with different EQ settings to find less resonant frequencies.
By following these tips and experimenting with your guitar's settings, you can reduce the likelihood of feedback with active pickups and enjoy playing without unwanted noise.