Dynamický mikrofonní předzesilovač Focusrite OctoPre MkII Amp Uživatelská příručka

Zavedení

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.

Klíčové vlastnosti

• Eight High-Quality Preamps: Features eight award-winning Focusrite microphone preampzáchranáři.
• 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 předamps are specifically optimized to handle high input levels, making them suitable for tracking drums.
• Vstupy přístroje: Two channels offer high-impedance (Hi-Z) instrument inputs, conveniently located on the front panel for direct connection of guitars and basses.
• Měření vstupu: Each channel is equipped with fast-acting 5-LED input meters for clear visual reference of input levels, helping to prevent clipping.
• Fantomová síla: 48V phantom power is available on every channel, switchable in two groups (1-4 and 5-8), for use with condenser microphones.
• Vestavěná komprese: 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.
• Přímé výstupy: Provides direct outputs on every channel for routing flexibility, particularly useful in live sound environments.
• Vnitřní hodiny: Delivers a jitter performance of less than 10 PPM, with a BNC connector for external clock synchronization using JetPLL jitter elimination technology.

Nastavení

Vybalení a kontrola

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.

Připojení jednotky

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.

• Připojení napájení: 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.
• Microphone/Line Inputs: 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.
• Linkové výstupy: 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.
• Hodiny slov: 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.

Počáteční zapnutí

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.

Návod k obsluze

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

Figure 3: Focusrite OctoPre MkII Dynamic Front Panel.

Tento obrázek poskytuje detailní view of the OctoPre MkII Dynamic's front panel, highlighting the gain knobs, pad buttons, phantom power switches, compressor controls, and metering section.

Ovládací prvky na předním panelu

• Knoflíky pro nastavení zisku (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.
  • Tlačítko Více: 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.
• Vypínač: Zapíná nebo vypíná jednotku.

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.

Synchronizace

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.

Údržba

• Čištění: K čištění vnější strany jednotky používejte měkký, suchý hadřík. Nepoužívejte abrazivní čisticí prostředky, rozpouštědla ani vosky.
• Větrání: Ujistěte se, že ventilační otvory nejsou zablokované, aby nedošlo k přehřátí.
• Skladování: When not in use for extended periods, store the unit in a cool, dry place, ideally in its original packaging.
• Napájecí kabel: Regularly check the power cord for any damage. Do not use a damaged power cord.

Odstraňování problémů

Specifikace

• Rozměry produktu: 24 x 14.2 x 5.2 palce
• Hmotnost položky: 11.3 libry
• Číslo modelu položky: AMS-Focusrite OctoPre MkII Dyanamic
• Počet kanálů: 8
• Technologie připojení: XLR, 1/4-inch TRS/TS, Optical ADAT, BNC Word Clock
• Podporovaný software: Windows (general compatibility for DAW integration)
• Kompatibilní zařízení: Keyboards, Microphones, Guitars, Basses, Digital Audio Workstations, Analog/Digital Consoles
• První dostupné datum: 15. září 2009
• Výrobce: Focusrite

Záruka a podpora

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:

Stáhnout uživatelskou příručku (PDF)

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