Focusrite Scarlett OctoPre Dynamic: 8-Channel Mic Preamp Instruction Manual

Introduction

The Focusrite Scarlett OctoPre Dynamic is an 8-channel microphone preamplifier designed to expand the input and output capabilities of your audio interface. It features eight high-quality Scarlett mic preamps, precision AD/DA conversion up to 192 kHz, and analogue compression on every channel. This unit is ideal for recording multiple sources simultaneously, such as drums, guitars, keyboards, and vocals, providing professional-grade audio expansion for your studio setup.

Setup

1. Unpacking and Initial Inspection

Carefully remove the Scarlett OctoPre Dynamic from its packaging. Ensure all included components are present: the Scarlett OctoPre Dynamic unit, a Getting Started Guide, and a Power Cable. Inspect the unit for any signs of physical damage. If any damage is found, contact your retailer immediately.

2. Physical Connections

The Scarlett OctoPre Dynamic connects to your audio interface primarily via ADAT optical cables. It also features various analog inputs and outputs.

Image: Front Panel Overview. This image displays the front panel of the Scarlett OctoPre Dynamic, showing the first two combination inputs (XLR/TRS), gain knobs, pad switches, and compression controls for each channel. The LED metering and power switch are also visible on the right side.

Image: Rear Panel Connections. This image shows the rear panel of the Scarlett OctoPre Dynamic, highlighting the ADAT optical input/output, Word Clock I/O, line outputs, and mic/line inputs 3-8. The power input is on the far left.

1. Power Connection: Connect the supplied power cable to the unit and a suitable power outlet.
2. ADAT Connection: Use an ADAT optical cable (not included) to connect the ADAT OUT port on the Scarlett OctoPre Dynamic to the ADAT IN port on your audio interface. If your interface supports dual ADAT, you may use a second cable for additional channels at higher sample rates.
3. Word Clock (Optional): For advanced synchronization with other digital devices, connect a Word Clock cable from your master clock device to the Word Clock IN on the OctoPre Dynamic, and/or from the OctoPre Dynamic's Word Clock OUT to other devices.
4. Analog Inputs:
   • Front Panel Inputs (1-2): These are combo XLR/TRS inputs for microphones, line-level sources, or instruments.
   • Rear Panel Inputs (3-8): These are combo XLR/TRS inputs for microphones or line-level sources.
5. Line Outputs: The eight balanced line outputs can be used to send audio to a mixing console, monitor speakers, or other outboard gear.

3. Software Setup

The Scarlett OctoPre Dynamic is designed to work with any ADAT-equipped audio interface. Configuration and routing are typically managed through your primary audio interface's control software (e.g., Focusrite Control for Scarlett interfaces). Ensure your audio interface drivers are up-to-date.

• Driver Installation: Install the latest drivers for your primary audio interface from the manufacturer's website.
• Software Control: Open your audio interface's control software. You should see the additional ADAT inputs from the Scarlett OctoPre Dynamic available for routing and monitoring.
• Sample Rate Synchronization: Set the sample rate in your DAW and your audio interface's control software to match. The Scarlett OctoPre Dynamic supports sample rates up to 192 kHz.

Operating the Scarlett OctoPre Dynamic

Front Panel Controls

• Gain Knobs: Adjust the input gain for each of the eight channels.
• PAD Switches: Engage the PAD switch for inputs with very high signal levels to prevent clipping.
• INST Switches (Inputs 1-2): Engage for direct connection of instruments (guitars, basses) to optimize impedance.
• 48V Phantom Power: Individual 48V phantom power switches are available for each channel to power condenser microphones.
• Compression Controls: Each channel features a single-knob analog compressor.
  • COMP Knob: Adjusts the amount of compression.
  • MORE Button: Doubles the compression ratio for a more pronounced effect.
  • O/L LED: Indicates overload/clipping.
• LED Input Metering: A 5-segment LED meter for each channel provides visual feedback on input levels.
• Sample Rate/Sync Indicators: LEDs display the current sample rate and synchronization status.
• Power Switch: Turns the unit on or off.

Image: Analog Compression Controls. This close-up shows the individual compression knobs and 'More' buttons for each channel, allowing for dynamic control of input signals. The O/L (Overload) LEDs are also visible.

Rear Panel Connections

• Mic/Line Inputs (3-8): Combo XLR/TRS jacks for connecting microphones or line-level sources.
• Line Outputs (1-8): Balanced TRS outputs for sending audio signals.
• ADAT Optical I/O: Used for digital audio transfer to and from your main audio interface.
• Word Clock I/O: BNC connectors for external clock synchronization.

Using the Unit

1. Connect Microphones/Instruments: Plug your microphones into the XLR inputs or instruments into the TRS inputs (1-2).
2. Apply Phantom Power: If using condenser microphones, activate the 48V phantom power for the respective channels.
3. Adjust Gain: Slowly increase the gain for each channel while monitoring the LED meters to achieve a healthy signal level without clipping.
4. Apply Compression: Use the COMP knob to add analog compression. Engage the 'MORE' button for a stronger compression effect.
5. Monitor Audio: Route the ADAT inputs from the OctoPre Dynamic within your DAW or audio interface control software to monitor the incoming audio.

Maintenance

• Cleaning: Use a dry, soft cloth to clean the exterior of the unit. Avoid liquid cleaners or abrasive materials.
• Ventilation: Ensure adequate ventilation around the unit to prevent overheating. Do not block any ventilation openings.
• Storage: Store the unit in a cool, dry place away from direct sunlight and extreme temperatures when not in use.

Troubleshooting

• No Audio Signal:
  • Check all cable connections (power, ADAT, audio cables).
  • Verify phantom power is engaged for condenser microphones.
  • Ensure gain knobs are turned up sufficiently.
  • Confirm sample rates are synchronized between the OctoPre Dynamic, your audio interface, and your DAW.
  • Check routing settings in your audio interface's control software.
• Distorted Audio:
  • Reduce input gain to prevent clipping (indicated by O/L LEDs).
  • Engage PAD switches for very hot signals.
  • Check for faulty cables.
• Synchronization Issues:
  • Ensure the OctoPre Dynamic is correctly slaved to your main audio interface via ADAT or Word Clock.
  • Verify Word Clock settings if external synchronization is used.

Specifications

Warranty Information

The Focusrite Scarlett OctoPre Dynamic comes with a 2-year warranty. Please retain your proof of purchase for warranty claims. For detailed terms and conditions, refer to the official Focusrite website or the included Getting Started Guide.

Image: Warranty Information. This image displays a "Three Year Warranty" logo from Focusrite. Note: Product data indicates a 2-year warranty, which is stated in the text.

Support

For further assistance, technical support, or to download the latest software and documentation, please visit the official Focusrite website: www.focusrite.com.

Official Product Videos

Below are official product videos from Focusrite, providing visual guides and demonstrations for the Scarlett OctoPre Dynamic.