Sound Devices MixPre-6 II Portable Audio Recorder/Mixer User Manual

1. Introduction

This manual provides comprehensive instructions for the setup, operation, and maintenance of your Sound Devices MixPre-6 II portable audio recorder, mixer, and USB audio interface. The MixPre-6 II is designed for professional audio capture in various environments, offering high-quality recording capabilities with its Kashmir microphone preamps and 32-bit float recording technology.

Key features include:

• Four ultra-low-noise Kashmir microphone preamps with adjustable limiters.
• Support for 16 to 32-bit float bit depths and sampling rates from 44.1 kHz to 192 kHz.
• Built-in 6 x 2 portable mixer.
• 8-in, 4-out USB audio interface via USB-C, supporting up to 32-bit float.
• Internal LTC timecode generator with Timecode In/Out via Aux In/Stereo Out, and record triggering via HDMI.
• Lightweight, durable, and compact design suitable for field, set, or studio use.

2. Safety Information

Please read and understand all safety instructions before operating the device. Retain this manual for future reference.

• Power Source: Use only the specified power adapters or batteries. Ensure correct polarity when inserting batteries.
• Water and Moisture: Do not expose the device to rain, moisture, or immerse it in liquids.
• Heat: Avoid placing the device near heat sources or in direct sunlight for extended periods.
• Ventilation: Do not block ventilation openings. Ensure adequate airflow around the device.
• Servicing: Do not attempt to service the device yourself. Refer all servicing to qualified service personnel.
• Cables: Ensure all cables are securely connected and not damaged. Avoid tripping hazards.

3. Package Contents

Verify that all items are present in your package:

• Sound Devices MixPre-6 II Recorder/Mixer
• USB-C to USB-C Cable
• Battery Sled (for AA batteries)
• AC Power Adapter (country-specific)
• Quick Start Guide

Note: Specific accessories may vary by region or retailer.

4. Product Overview

The Sound Devices MixPre-6 II features a robust design with intuitive controls and comprehensive connectivity options. Familiarize yourself with the device's layout.

Figure 4.1: Angled view of the Sound Devices MixPre-6 II, showcasing its compact form factor and primary controls on the top panel.

4.1 Top Panel Controls

Figure 4.2: Top view of the MixPre-6 II, highlighting the input gain controls (green knobs), transport controls (play, stop, record), and the display screen.

• Input Gain Knobs (1-4): Adjust the input level for each channel.
• Transport Controls: Play, Stop, and Record buttons for audio capture and playback.
• Display Screen: Provides visual feedback on levels, settings, and menu navigation.
• Headphone Output: For monitoring audio.

4.2 Left Side Panel Connections

Figure 4.3: Left side panel showing XLR/TRS combo inputs for channels 1 and 2, USB-A port, USB-C port, and Stereo Out jack.

• XLR/TRS Combo Inputs (1-2): Connect microphones or line-level sources.
• USB-A Port: For connecting USB devices.
• USB-C Port: For power, data transfer, and USB audio interface connection.
• Stereo Out (3.5mm TRS): Main stereo output.

4.3 Right Side Panel Connections

Figure 4.4: Right side panel showing XLR/TRS combo inputs for channels 3 and 4, Aux/Mic In, and Cam TC In (HDMI).

• XLR/TRS Combo Inputs (3-4): Connect microphones or line-level sources.
• Aux/Mic In (3.5mm TRS): Auxiliary input, also used for timecode input.
• Cam TC In (HDMI): HDMI input for camera timecode synchronization.

4.4 Bottom Panel

Figure 4.5: Bottom view of the MixPre-6 II, showing the battery compartment and mounting points.

• Battery Compartment: Houses the battery sled for portable power.
• Mounting Points: Standard 1/4-inch threads for attaching to cameras, tripods, or rigs.

4.5 In-Use Scenarios

Figure 4.6: The MixPre-6 II integrated into a field recording setup, connected to a microphone on a stand and headphones for monitoring.

Figure 4.7: A user operating the MixPre-6 II in an outdoor environment, demonstrating its portability and ease of use for on-location audio capture.

5. Setup

5.1 Powering the Device

The MixPre-6 II can be powered via AA batteries, L-mount batteries (with optional sled), or USB-C power.

• AA Batteries: Insert 8 AA batteries into the included battery sled and attach it to the bottom of the MixPre-6 II.
• USB-C Power: Connect a compatible USB-C power supply to the USB-C port on the left side panel.

5.2 Inserting an SD Card

The MixPre-6 II records audio to an SD card. Locate the SD card slot (typically on the side or bottom, refer to device diagrams) and insert a compatible SD, SDHC, or SDXC card with sufficient speed and capacity. Ensure the card is formatted by the MixPre-6 II before first use.

5.3 Connecting Microphones and Inputs

Connect your microphones or line-level sources to the XLR/TRS combo inputs (1-4) on the side panels. For auxiliary sources or timecode input, use the 3.5mm Aux/Mic In jack. For camera timecode, use the HDMI Cam TC In port.

5.4 Connecting to a Computer (USB Audio Interface)

Connect the MixPre-6 II to your computer using the supplied USB-C cable. The device will function as an 8-in, 4-out USB audio interface, allowing direct recording to your Digital Audio Workstation (DAW).

6. Operating Instructions

6.1 Basic Recording

1. Power On: Press and hold the power button until the device powers on.
2. Select Input: Navigate the menu to select the desired input type (e.g., Mic, Line, Aux).
3. Adjust Gain: Use the input gain knobs (1-4) to set appropriate recording levels. Monitor the on-screen meters to avoid clipping.
4. Arm Tracks: Press the arm button for each track you wish to record.
5. Start Recording: Press the REC button to begin recording. The button will illuminate.
6. Stop Recording: Press the STOP button to end the recording.

6.2 Monitoring Audio

Connect headphones to the headphone jack. Use the dedicated headphone volume control to adjust monitoring levels. The MixPre-6 II allows for flexible routing of inputs to the headphone mix.

6.3 32-Bit Float Recording

The MixPre-6 II supports 32-bit float recording, which provides an extremely wide dynamic range. This feature significantly reduces the risk of clipping during recording, as levels can be adjusted in post-production without loss of quality. Ensure your DAW supports 32-bit float WAV files for full benefit.

6.4 Timecode Synchronization

The internal LTC timecode generator allows for precise synchronization with other devices. Timecode can be input via the Aux In/Stereo Out jack or via HDMI from a compatible camera. Refer to the on-screen menu for timecode settings and synchronization options.

7. Maintenance

7.1 Cleaning

Wipe the device with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure all ports are free of dust and debris.

7.2 Firmware Updates

Periodically check the Sound Devices website for firmware updates. Firmware updates can provide new features, performance improvements, and bug fixes. Follow the instructions provided by Sound Devices carefully when performing an update.

8. Troubleshooting

• Device does not power on:
  • Check battery charge or replace batteries.
  • Ensure USB-C power supply is connected correctly and functioning.
• No audio recording:
  • Verify microphones are connected and powered (if phantom power is required).
  • Check input gain levels.
  • Ensure tracks are armed for recording.
  • Confirm SD card is inserted and has free space.
• No audio monitoring:
  • Check headphone connection and volume level.
  • Verify headphone routing settings in the menu.
• USB audio interface not recognized:
  • Ensure USB-C cable is securely connected to both the MixPre-6 II and the computer.
  • Check computer's sound settings to select the MixPre-6 II as the audio device.
  • Install any necessary drivers from the Sound Devices website.

9. Specifications

10. Warranty and Support

Sound Devices products are covered by a manufacturer's warranty. For detailed warranty information, including terms and conditions, please refer to the warranty card included with your product or visit the official Sound Devices website.

For technical support, service, or to download the latest firmware and full user manual, please visit the Sound Devices support page:

www.sounddevices.com/support