Fairfield Circuitry Hors D'Oeuvre Active Feedback Loop User Manual

1. Product Overview

The Fairfield Circuitry Hors D'Oeuvre is an active feedback loop pedal designed for creative audio manipulation. It allows users to introduce bipolar feedback into their signal chain, enabling unique sound textures and experimental effects. The pedal also provides control over the blend of the input signal and the processed return signal, offering versatile sound sculpting capabilities for various instruments and audio sources.

Image 1: Front view of the Fairfield Circuitry Hors D'Oeuvre Active Feedback Loop pedal. It features three black control knobs labeled 'FEED', 'WET', and 'DRY'. Below 'FEED' and 'WET' are small toggle switches with '+' and '-' markings. A yellow LED indicator is located in the center, and a silver footswitch is on the bottom right. The brand 'FAIRFIELD CIRCUITRY' is printed on the lower left, and 'H D003' is near the footswitch.

2. Setup

1. Power Connection: Connect a standard 9V DC power supply (center-negative) to the power input jack of the Hors D'Oeuvre pedal. Ensure the power supply meets the pedal's specifications to prevent damage.
2. Input Connection: Connect your instrument or audio source to the INPUT jack on the pedal using a standard 1/4-inch instrument cable.
3. Output Connection: Connect the OUTPUT jack of the pedal to your amplifier, mixer, or next effect pedal in your signal chain using a standard 1/4-inch instrument cable.
4. Effects Loop Connection (Optional): To utilize the feedback loop functionality, connect the SEND jack to the input of the effects you wish to loop, and the RETURN jack from the output of those effects.

3. Operating Instructions

Once the pedal is properly connected and powered, you can begin to explore its capabilities. The footswitch engages or bypasses the effect. The LED indicator illuminates when the effect is active.

3.1. Controls Overview

• FEED Knob: This knob controls the amount of signal that is fed back into the effects loop. Turning it clockwise increases the feedback intensity, leading to more pronounced and potentially self-oscillating effects.
• FEED Toggle Switch (+/-): This switch alters the phase or polarity of the feedback signal. Experiment with both positions to achieve different tonal characteristics and feedback behaviors.
• WET Knob: Adjusts the volume level of the processed (wet) signal returning from the effects loop.
• WET Toggle Switch (+/-): This switch changes the phase or polarity of the wet signal. This can be used to create phase cancellation or enhancement when blended with the dry signal.
• DRY Knob: Controls the volume level of the original, unprocessed (dry) signal. Use this to blend your clean tone with the effected signal.
• Footswitch: Toggles the effect on or off. When the effect is active, the LED will be lit.
• LED Indicator: Illuminates when the Hors D'Oeuvre effect is engaged.

3.2. Basic Operation

1. Start with all knobs at their minimum (fully counter-clockwise) and toggle switches in a neutral position (e.g., '-').
2. Engage the pedal by pressing the footswitch. The LED should light up.
3. Slowly increase the DRY knob to hear your instrument's clean signal.
4. Gradually increase the WET knob to introduce the processed signal.
5. Adjust the FEED knob to introduce feedback. Experiment with the FEED toggle switch to hear the difference in feedback character.
6. Use the WET toggle switch to explore phase relationships between the wet and dry signals.
7. Adjust all three knobs (FEED, WET, DRY) to find your desired blend and feedback intensity.

4. Maintenance

• Cleaning: Use a soft, dry cloth to clean the pedal's enclosure. Avoid abrasive cleaners or solvents, which can damage the finish.
• Storage: Store the pedal in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
• Power Supply: Always use the correct power supply (9V DC, center-negative) to prevent damage to the internal circuitry.
• Connections: Ensure all cables are securely connected but do not overtighten. Periodically check cables for wear and tear.

5. Troubleshooting

• No Sound:
  • Check all cable connections (input, output, power).
  • Ensure the power supply is correctly connected and functioning.
  • Verify that your instrument and amplifier are working correctly.
  • Check the DRY and WET knobs are not set to minimum.
• Unexpected Noise/Hum:
  • Ensure you are using a regulated, isolated power supply.
  • Check for faulty cables.
  • Try moving the pedal away from other electronic devices that might cause interference.
• No Effect/Feedback:
  • Ensure the pedal is engaged (LED lit).
  • Check the FEED and WET knobs are not set to minimum.
  • Verify that any external effects in the loop are powered and functioning correctly.

6. Specifications

7. Warranty and Support

For warranty information and technical support, please refer to the official Fairfield Circuitry website or contact their customer service directly. Keep your proof of purchase for any warranty claims.

Official Website: fairfieldcircuitry.com