Solid State Logic E-EQ Mk2 500 Series Equalizer User Manual

1. Introduction

The Solid State Logic E-EQ Mk2 500 Series Equalizer is a high-quality audio processing module designed to bring the legendary sound of the SSL 4000 E console's EQ to your studio. This module faithfully reproduces the characteristics of the original E-Series EQ, which has been a cornerstone of countless classic recordings since the 1980s. It is designed for integration into standard 500 series racks, offering a compact yet powerful solution for precise tonal shaping.

Key Features:

• Immortal SSL 4000 E Series circuitry
• "Black-242" and "Brown-02" twin EQ design
• Versatile 4 band channel EQ
• Bell curve option on HF and LF bands
• Based on classic 611E console channel strip

2. Safety Information

Please read and understand all safety instructions before operating the Solid State Logic E-EQ Mk2. Failure to do so may result in injury or damage to the unit or other equipment.

• Always ensure the 500 series rack is powered off before inserting or removing the module.
• Do not expose the unit to moisture or extreme temperatures.
• Avoid placing the unit near heat sources or in direct sunlight.
• Only use the module with compatible 500 series racks that meet industry standards.
• Refer all servicing to qualified service personnel. There are no user-serviceable parts inside.

3. Setup

The E-EQ Mk2 is a 500 series module and requires a compatible 500 series rack for operation. Follow these steps for proper installation:

1. Ensure your 500 series rack is powered off and disconnected from the mains power supply.
2. Carefully align the E-EQ Mk2 module with an available slot in your 500 series rack.
3. Gently slide the module into the slot until it is fully seated and the rear connector is firmly engaged.
4. Secure the module to the rack using the mounting screws provided with your 500 series rack.
5. Once all modules are installed, reconnect the rack to mains power and power it on.
6. Connect your audio input and output cables to the appropriate connections on your 500 series rack.

4. Operating Instructions

Front Panel Overview:

Image: Front panel of the Solid State Logic E-EQ Mk2 500 Series Equalizer, showing all controls and indicators.

Controls and Functions:

The E-EQ Mk2 features four bands of equalization, along with input and EQ type selection controls.

• HF (High Frequency) Section:

  Controls the high-frequency range of the audio signal.

  • dB Knob (Red): Adjusts the gain or cut for the high-frequency band, ranging from -14dB to +14dB.
  • kHz Knob (Red): Selects the center frequency for the high-frequency band, ranging from 2kHz to 16kHz.
  • BELL Button: Toggles the HF band between a shelving response (button out) and a bell-shaped parametric response (button in).

• HMF (High Mid Frequency) Section:

  Controls the high-mid frequency range with parametric control.

  • dB Knob (Green): Adjusts the gain or cut for the high-mid frequency band, ranging from -14dB to +14dB.
  • Q Knob (Green): Controls the bandwidth (Q factor) of the high-mid frequency band, from 0.6 to 7. A higher Q value results in a narrower bandwidth.
  • kHz Knob (Green): Selects the center frequency for the high-mid frequency band, ranging from 1.5kHz to 6kHz.

• LMF (Low Mid Frequency) Section:

  Controls the low-mid frequency range with parametric control.

  • dB Knob (Blue): Adjusts the gain or cut for the low-mid frequency band, ranging from -14dB to +14dB.
  • Q Knob (Blue): Controls the bandwidth (Q factor) of the low-mid frequency band, from 0.2 to 2. A higher Q value results in a narrower bandwidth.
  • kHz Knob (Blue): Selects the center frequency for the low-mid frequency band, ranging from 0.2kHz to 2.5kHz.

• LF (Low Frequency) Section:

  Controls the low-frequency range of the audio signal.

  • dB Knob (Brown): Adjusts the gain or cut for the low-frequency band, ranging from -14dB to +14dB.
  • Hz Knob (Brown): Selects the center frequency for the low-frequency band, ranging from 30Hz to 450Hz.
  • BELL Button: Toggles the LF band between a shelving response (button out) and a bell-shaped parametric response (button in).

• BLK Button:

  This button selects between the two different EQ characteristics found on original SSL 4000 E consoles. When the BLK button is out, the module operates in the 'Brown' EQ mode (also known as the '02' EQ), which features SSL’s classic logarithmically symmetric design for the mid-bands. When the BLK button is pressed in, it activates the 'Black' EQ mode (also known as the '242' EQ), offering a different tonal character and response curve.

• IN Button:

  Engages or bypasses the equalization circuit. When the IN button is pressed in, the EQ is active. When the button is out, the EQ is bypassed, allowing the audio signal to pass through unaffected.

5. Maintenance

To ensure the longevity and optimal performance of your Solid State Logic E-EQ Mk2, follow these simple maintenance guidelines:

• Cleaning: Use a soft, dry, lint-free cloth to clean the exterior of the module. Do not use liquid cleaners, aerosols, or solvents, as these can damage the finish or internal components.
• Storage: When not in use, store the module in a clean, dry environment, away from direct sunlight and extreme temperatures. If removed from the rack, consider using a protective case.
• Ventilation: Ensure that your 500 series rack has adequate ventilation to prevent overheating, which can affect the performance and lifespan of the module.
• Connections: Periodically check all audio and power connections for secure fit. Loose connections can lead to signal degradation or intermittent operation.

6. Troubleshooting

If you encounter issues with your E-EQ Mk2, refer to the table below for common problems and their solutions. If the problem persists, contact Solid State Logic support or a qualified service technician.

7. Specifications

Below are the technical specifications for the Solid State Logic E-EQ Mk2 500 Series Equalizer:

8. Warranty and Support

Solid State Logic products are manufactured to the highest standards and are backed by a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Solid State Logic website.

For technical support, service, or any inquiries regarding your E-EQ Mk2 module, please contact Solid State Logic customer support through their official channels. Ensure you have your product model number (500EEQ) and purchase details ready when contacting support.

Online Resources: For the latest drivers, software, and additional documentation, please visit the Solid State Logic official website.