Keeley Dark Side Fuzz Mod Workstation Pedal Instruction Manual

1. Overview

The Keeley Dark Side Fuzz Mod Workstation Pedal is a versatile multi-effects unit designed for guitarists seeking a comprehensive palette of tones. It integrates three distinct effect types: Fuzz, Delay, and Modulation. This pedal is engineered to provide a transparent Big Fuzz, a selection of 12 multi-head tape-style delays, and various modulation effects including Flanger, Rotary Speaker Cabinet, U-Vibe, and Phaser. Its design allows for extensive sound shaping, making it a powerful tool for creative expression.

Figure 1: Top view of the Keeley Dark Side Fuzz Mod Workstation Pedal.

2. Features

• Fuzz Section: Engineered for a transparent Big Fuzz tone, reminiscent of classic transistor-based fuzzes.
• Delay Section: Features 12 distinct multi-head tape-style syncopated delays.
• Modulation Section: Offers a selection of Flanger, Rotary Speaker Cabinet, U-Vibe, and Phaser effects.
• Expression Pedal Port: Allows for external control over certain parameters, enhancing real-time manipulation.
• Effect Order Switch: Provides flexibility to change the signal path order of the Fuzz and Modulation/Delay sections.
• Power Requirement: Operates on 9VDC Center Negative power supply.

3. Controls and Connections

Familiarize yourself with the pedal's controls and connections as illustrated below.

Figure 2: Labeled diagram of the Keeley Dark Side Pedal controls.

Control Descriptions:

Side Panel Connections:

Figure 3: Side view showing input, output, and expression pedal jacks.

• Input (IN): Connect your guitar or the output of a preceding effect pedal here.
• Output (OUT): Connect this to your amplifier's input or the input of the next effect pedal.
• Expression (EXP): Connect a TRS expression pedal for real-time control of selected parameters.
• 9VDC Input: Connect a regulated 9VDC center-negative power supply.

4. Setup

1. Power Connection: Connect a standard 9VDC center-negative power supply (not included) to the 9VDC input jack on the pedal. Ensure the power supply meets the specified voltage and polarity requirements to prevent damage.
2. Input Connection: Connect your guitar or the output of your last pedal in the signal chain to the 'IN' jack on the pedal using a standard 1/4-inch instrument cable.
3. Output Connection: Connect the 'OUT' jack of the pedal to your amplifier's input or the input of the next pedal in your signal chain using a standard 1/4-inch instrument cable.
4. Expression Pedal (Optional): If using an expression pedal, connect it to the 'EXP' jack using a TRS cable.
5. Initial Settings: Before powering on, set all knobs to their middle positions and ensure both footswitches are disengaged (LEDs off).

5. Operation

5.1 Fuzz Section

• Engaging Fuzz: Press the FUZZ footswitch to activate the fuzz effect. The corresponding LED will illuminate.
• FUZZ Knob: Adjusts the amount of fuzz gain. Higher settings produce more saturation and sustain.
• FILTER Knob: Shapes the tone of the fuzz. Experiment with this knob to find your desired frequency response, from darker to brighter tones.
• FUZZ Toggle Switch: Selects between three distinct fuzz voicings:
  • FLAT: A balanced, full-range fuzz tone.
  • SCOOP: Scoops the mid-range frequencies, often used for a classic Big Muff-style sound.
  • FULL: Boosts the low-end and overall output for a thicker, more powerful fuzz.
• FUZZ Level Knob: Controls the overall output volume of the fuzz effect.

5.2 Modulation and Delay Section

• Engaging Mod/Delay: Press the MOD footswitch to activate the modulation or delay effect. The corresponding LED will illuminate.
• DELAY/MOD Switch: Toggles between Delay and Modulation modes.
• MOD Level Knob: Controls the overall output volume of the modulation or delay effect.

Delay Mode:

• BLEND/TAPE HEAD Knob: In Delay mode, this knob selects one of 12 multi-head tape delay programs. Each program offers a unique rhythmic pattern of repeats. Refer to the Tape Head Matrix for details.
• DEPTH/TIME Knob: Adjusts the delay time, from short slap-back echoes to long, ambient repeats.
• RATE/FDBK Knob: Controls the feedback (number of repeats) of the delay. Higher settings result in more repeats.

Figure 4: Keeley Tape Head Matrix for Delay Programs.

Modulation Mode:

• BLEND/TAPE HEAD Knob: In Modulation mode, this knob blends the dry signal with the wet (effected) signal.
• DEPTH/TIME Knob: Adjusts the intensity or depth of the selected modulation effect.
• RATE/FDBK Knob: Controls the speed or rate of the selected modulation effect.
• Modulation Types: The pedal offers Flanger, Rotary Speaker Cabinet, U-Vibe, and Phaser. The specific modulation type is selected via internal settings or a combination of knob positions (refer to the full product manual for advanced details if available).

5.3 Expression Pedal Functionality

When an expression pedal is connected to the EXP jack, it can be assigned to control various parameters within the Modulation or Delay section, such as Delay Time, Modulation Rate, or Blend. Consult the full product manual for specific assignments and calibration instructions.

5.4 Effect Order Switch

The ORDER switch allows you to change the internal signal flow of the Fuzz and Modulation/Delay sections. This significantly impacts the overall tone and interaction between the effects:

• Fuzz First: The fuzz effect processes the signal before the modulation/delay. This is a common setup for classic fuzz tones with trailing effects.
• Mod/Delay First: The modulation/delay effect processes the signal before the fuzz. This can lead to unique and experimental sounds, where the fuzz acts on the modulated or delayed signal.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the pedal's exterior. Avoid abrasive cleaners or solvents.
• Storage: Store the pedal in a cool, dry place away from direct sunlight and extreme temperatures.
• Power: Always disconnect the power supply when the pedal is not in use for extended periods.
• Connections: Periodically check all cable connections for wear and tear. Ensure jacks are free of dust and debris.

7. Troubleshooting

• No Sound:
  • Check all cable connections (guitar to IN, OUT to amp).
  • Ensure the power supply is correctly connected and functioning.
  • Verify that the pedal is engaged (LEDs illuminated for active effects).
  • Check the volume knobs on the pedal, guitar, and amplifier.
• Fuzz Not Engaging/Working:
  • Ensure the FUZZ footswitch is pressed and its LED is on.
  • Check the FUZZ knob setting; ensure it's not at minimum.
  • Test with different cables and power supply.
  • If the MOD section works but Fuzz does not, there might be an internal issue requiring professional service.
• Excessive Noise/Hum:
  • Ensure you are using a regulated 9VDC center-negative power supply. Unregulated or incorrect power supplies can cause noise.
  • Check for ground loops in your setup.
  • Move the pedal away from power transformers or other sources of electromagnetic interference.
  • Try different cables.
• Effects Not Modulating/Delaying Correctly:
  • Ensure the MOD footswitch is pressed and its LED is on.
  • Verify the DELAY/MOD switch is in the desired position.
  • Adjust the DEPTH/TIME and RATE/FDBK knobs.
  • For delay, ensure the BLEND/TAPE HEAD knob is set to an active program.

8. Specifications

9. Warranty and Support

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