Keeley Neutrino V2 Classic Envelope Filter Pedal User Manual

Introduction

The Keeley Neutrino V2 is a compact opto-coupler based envelope filter pedal designed to produce classic auto-wah effects for guitar, bass, and keyboards. This manual provides detailed instructions for setting up, operating, and maintaining your Neutrino V2 pedal to ensure optimal performance and longevity.

Setup

Follow these steps to properly connect your Keeley Neutrino V2 pedal to your audio system.

1. Power Connection: The Neutrino V2 requires a 9V DC power supply with a center-negative barrel connector. It operates at 25 mA. Connect the power supply to the 9VDC input jack located at the top of the pedal. Alternatively, a 9V battery can be used.
2. Instrument Input: Connect your instrument (guitar, bass, or keyboard) to the input jack on the right side of the pedal using a standard 1/4-inch instrument cable.
3. Amplifier Output: Connect the output jack on the left side of the pedal to your amplifier or the next pedal in your signal chain using a standard 1/4-inch instrument cable.

Image: Front view of the Keeley Neutrino V2 pedal, showing the control knobs, footswitch, and input/output jacks.

Image: Side view of the Keeley Neutrino V2 pedal, illustrating the 1/4-inch input and output jacks and the power input.

Operating the Neutrino V2

The Neutrino V2 features intuitive controls to shape your envelope filter sound. Familiarize yourself with each control for optimal performance.

Image: Diagram of the Keeley Neutrino V2 pedal with numbered labels indicating each control element.

• 1. LED Indicator: This blue LED illuminates when the pedal is active.
• 2. GAIN Control: Adjusts the input sensitivity of the envelope filter. Higher gain settings will make the filter react more strongly to your pick attack, producing a more pronounced wah effect.
• 3. FILTER Selector (L/B/H): This three-position switch selects the type of filter:
  • L (Low Pass): Emphasizes lower frequencies, creating a deeper, more resonant filter sound.
  • B (Band Pass): A balanced filter that allows a specific band of frequencies to pass, ideal for classic wah sounds.
  • H (High Pass): Emphasizes higher frequencies, resulting in a brighter, more cutting filter effect.
• 4. Footswitch: Engages or bypasses the effect. The Neutrino V2 features true-bypass switching, ensuring your signal remains unaffected when the pedal is off.
• 5. OUTPUT VOL. (Output Volume): Controls the overall output level of the pedal. Adjust to match the volume of your bypassed signal or to boost the effect.
• 6. PEAK Control: Determines the resonance or 'Q' of the filter. Higher settings increase the intensity and 'quack' of the wah sound. Lower settings provide a smoother, more subtle filter.
• 7. DIR (Direction) Switch: This two-position switch changes the direction of the filter sweep.
  • Up position: Filter sweeps upwards (classic wah sound).
  • Down position: Filter sweeps downwards (reverse wah sound).
• RANGE Switch (LO/HI): This two-position switch adjusts the frequency range of the filter sweep.
  • LO (Low): Provides a lower frequency sweep, suitable for bass or deeper guitar tones.
  • HI (High): Offers a higher frequency sweep, ideal for brighter guitar tones.

Experiment with different combinations of GAIN, PEAK, FILTER, and RANGE settings to discover a wide array of envelope filter sounds, from subtle auto-wah to pronounced funk effects.

Maintenance

Proper care will ensure the longevity and reliable performance of your Neutrino V2 pedal.

• Cleaning: Use a soft, dry cloth to clean the pedal's exterior. Avoid abrasive cleaners or solvents, which can damage the finish.
• Power Supply: Always use a regulated 9V DC center-negative power supply. Incorrect power can damage the unit and void the warranty.
• Storage: Store the pedal in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
• Battery Replacement: If using a 9V battery, replace it when the LED indicator dims or the effect becomes weak. To replace, carefully remove the bottom plate of the pedal.

Troubleshooting

If you encounter issues with your Neutrino V2, refer to the following common problems and solutions.

• No Sound:
  • Ensure all cables are securely connected to the input, output, and power jacks.
  • Verify the power supply is functioning correctly and providing 9V DC center-negative power.
  • Check if the instrument and amplifier are working properly by bypassing the pedal.
• Weak or Inconsistent Effect:
  • Adjust the GAIN control. If the input signal is too low, the envelope filter may not trigger effectively.
  • Check your instrument's output level.
  • Ensure the PEAK control is set to a desired level; lower settings produce a more subtle effect.
• Unwanted Noise:
  • Ensure you are using a high-quality, regulated power supply. Unregulated power supplies can introduce noise.
  • Check for faulty cables.
  • Test the pedal in isolation to rule out other pedals in your signal chain as the source of noise.

If these steps do not resolve the issue, please contact Keeley Electronics customer support for further assistance.

Specifications

Warranty and Support

Keeley Electronics products are known for their quality and craftsmanship. For warranty information or technical support, please visit the official Keeley Electronics website or contact their customer service department. Please retain your proof of purchase for any warranty claims.