Focusrite OctoPre MkII dynamisk mikrofonforstærker Amp Brugermanual

Indledning

The Focusrite OctoPre MkII Dynamic is an eight-channel microphone preamplifier with a built-in 24-bit / 96 kHz ADAT output. It serves as a powerful input expansion for Pro Tools systems, other digital audio workstations, analog or digital consoles, and hard disk recorders. This unit is designed to enhance your recording setup by providing high-quality preamplification and versatile digital connectivity.

Figure 1: Focusrite OctoPre MkII Dynamic Microphone Pre Amp - Angled Front View.

This image displays the overall design of the OctoPre MkII Dynamic, showcasing its rack-mountable form factor and the layout of its front panel controls and indicators.

Nøglefunktioner

• Eight High-Quality Preamps: Features eight award-winning Focusrite microphone preamplivførere.
• Integrated Digital Output: Includes an eight-channel 24-bit / 96 kHz ADAT digital output for seamless integration with digital audio interfaces.
• Optimized for Drums: Mikrofon præamps are specifically optimized to handle high input levels, making them suitable for tracking drums.
• Instrumentindgange: Two channels offer high-impedance (Hi-Z) instrument inputs, conveniently located on the front panel for direct connection of guitars and basses.
• Indgangsmåling: Each channel is equipped with fast-acting 5-LED input meters for clear visual reference of input levels, helping to prevent clipping.
• Fantomkraft: 48V phantom power is available on every channel, switchable in two groups (1-4 and 5-8), for use with condenser microphones.
• Built-in Compression: Features VCA-based, feed-forward compressors on each channel, derived from the Focusrite Red 3, with a single dial for control and a 'More' button for aggressive compression.
• Direct Outputs: Provides direct outputs on every channel for routing flexibility, particularly useful in live sound environments.
• Internt ur: Delivers a jitter performance of less than 10 PPM, with a BNC connector for external clock synchronization using JetPLL jitter elimination technology.

Opsætning

Udpakning og inspektion

Carefully unpack the OctoPre MkII Dynamic and inspect it for any signs of damage that may have occurred during transit. Retain the packaging materials for future transport or storage.

Tilslutning af enheden

The OctoPre MkII Dynamic offers various input and output options for integration into your audio setup.

Figure 2: Focusrite OctoPre MkII Dynamic Rear Panel.

This image shows the rear panel of the OctoPre MkII Dynamic, detailing the power input, Word Clock I/O, Optical ADAT outputs, Line Outputs, and Mic/Line Inputs.

• Strømtilslutning: Connect the supplied AC power cable to the IEC inlet on the rear panel and to a suitable mains power outlet. Ensure the unit is properly earthed.
• Mikrofon/line-indgange: Use XLR cables for microphone connections to inputs 1-8. For line-level signals, use 1/4-inch TRS or TS cables.
• Instrument Inputs (Channels 1 & 2): For instruments like guitars or basses, plug directly into the 1/4-inch DI inputs on the front panel. This bypasses the rear XLR input for these channels.
• ADAT Output: Connect the optical ADAT outputs (Lightpipe) to the ADAT input of your audio interface or digital mixer. The unit provides two mirrored ADAT outputs (44.1/48 kHz) for channels 1-8.
• Linieudgange: Use 1/4-inch TRS or TS cables to connect the individual line outputs (1-8) to an analog mixer or other analog recording equipment.
• Ord ur: For synchronization with external digital devices, connect a BNC cable from your master clock to the Word Clock input, or from the Word Clock output to slave devices.

Indledende opstart

Once all connections are made, press the Power button on the front panel to turn on the unit. The power indicator LED will illuminate. Allow a few moments for the unit to initialize.

Betjeningsvejledning

This section details the functions of the front panel controls and indicators.

Figure 3: Focusrite OctoPre MkII Dynamic Front Panel.

Dette billede giver en detaljeret view of the OctoPre MkII Dynamic's front panel, highlighting the gain knobs, pad buttons, phantom power switches, compressor controls, and metering section.

Kontrol på frontpanelet

• Gain-knapper (1-8): Adjust the input gain for each microphone/line channel. Rotate clockwise to increase gain.
• Pad Buttons (1-8): Engages a 10dB pad for the corresponding channel, useful for very hot signals like close-miked drums.
• Phantom Power (48V) Switches: Two switches control 48V phantom power for channels 1-4 and 5-8. Press to engage for condenser microphones.
• Instrument Inputs (1 & 2): 1/4-inch jacks for direct connection of high-impedance instruments.
• Compressor Controls (1-8):
  • Compress Knob: A single dial that simultaneously decreases the threshold and increases makeup gain for the VCA-based compressor.
  • More Button: Engages a more aggressive compression mode, doubling the ratio from 2:1 to 4:1 and shifting the threshold range.
  • Compress LED: Illuminates when compression is active.
• Input Meters (1-8): 5-LED ladders display the input level for each channel, indicating signal presence, nominal level, and potential clipping (O/L).
• Sample Rate Select: Buttons to select the desired sample rate (44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz) for the ADAT output.
• Sync Source Select: Buttons to choose the clock source: Internal, ADAT, or Word Clock.
• Power knap: Tænder eller slukker for enheden.

Using the Compressors

The OctoPre MkII Dynamic features a unique single-dial compressor on each channel. Turning the 'Compress' knob clockwise increases the amount of compression. For a more pronounced and aggressive compression effect, engage the 'More' button. The 'Compress' LED will light up when the compressor is actively reducing the signal's dynamic range.

Synkronisering

For stable digital audio, it is crucial to properly synchronize the OctoPre MkII Dynamic with your other digital devices. Select the desired sample rate using the 'Sample Rate' buttons. Then, choose your sync source: 'Internal' for the OctoPre's own clock, 'ADAT' if receiving clock from an ADAT input, or 'Word Clock' if synchronizing via the BNC Word Clock input.

Opretholdelse

• Rensning: Brug en blød, tør klud til at rengøre enhedens yderside. Brug ikke slibende rengøringsmidler, opløsningsmidler eller voks.
• Ventilation: Sørg for, at ventilationsåbningerne ikke er blokerede for at forhindre overophedning.
• Opbevaring: When not in use for extended periods, store the unit in a cool, dry place, ideally in its original packaging.
• Strømledning: Regularly check the power cord for any damage. Do not use a damaged power cord.

Fejlfinding

Specifikationer

• Produktdimensioner: 24 x 14.2 x 5.2 tommer
• Varens vægt: 11.3 pund
• Varemodelnummer: AMS-Focusrite OctoPre MkII Dyanamic
• Antal kanaler: 8
• Forbindelse teknologi: XLR, 1/4-inch TRS/TS, Optical ADAT, BNC Word Clock
• Understøttet software: Windows (general compatibility for DAW integration)
• Kompatible enheder: Keyboards, Microphones, Guitars, Basses, Digital Audio Workstations, Analog/Digital Consoles
• Første tilgængelige dato: 15. september 2009
• Fabrikant: Focusrite

Garanti og support

For detailed warranty information and technical support, please refer to the official Focusrite website or the comprehensive User Guide provided with your product. A digital version of the User Guide is available for download:

Download brugervejledning (PDF)

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