Focusrite ISA Two Dual Mono Microphone Preampliifier 사용 설명서

제품 끝view

The Focusrite ISA Two is a classic dual mono transformer-based microphone preamplifier designed for professional audio recording. It incorporates the renowned Lundahl LL1538 mic input transformer, originally selected by Rupert Neve for the ISA 110, ensuring exceptional audio quality.

주요 특징은 다음과 같습니다.

• Lundahl LL1538 Transformer: Utilizes the high-quality Lundahl LL1538 mic input transformer for superior sound.
• High Gain and Low Noise: Offers up to 80 dB of clean gain on the microphone input with minimal noise.
• 가변 입력 임피던스: Four selectable input impedance settings, including the original ISA 110 value, allow for optimal matching with various microphones.
• User-Calibrated Metering: Each channel features an eight-LED array for clear level display, with a rear panel calibration knob to match DAW converters.
• 다양한 입력: Two 1/4-inch front panel DI inputs for instruments and rear panel TRS line inputs.
• 하이패스 필터: An 18dB/octave high-pass filter, based on the ISA 110 module, is built-in for precise low-frequency control.
• Balanced Inserts: Each channel includes balanced insert points (1/4-inch TRS send and receive) for integrating external hardware processors.

그림 1: 전면 view of the Focusrite ISA Two preamp리파이어, 쇼크asing its controls and metering.

패키지 내용

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• Focusrite ISA Two Unit
• IEC 전원 케이블

설치 가이드

Follow these steps to set up your ISA Two preamp정수기:

1. 랙마운트 설치: The ISA Two is designed for standard 19-inch rack mounting. Secure the unit using appropriate rack screws.
2. 전원 연결: Connect the supplied IEC power cable to the rear panel power inlet and then to a suitable AC power source. Ensure the power switch is in the OFF position before connecting.
3. 마이크 연결: Use balanced XLR cables to connect your microphones to the 'MIC INPUT' XLR connectors on the rear panel for each channel.
4. Connecting Line Sources: For line-level signals, use balanced TRS cables to connect to the 'LINE INPUT' TRS connectors on the rear panel.
5. 악기 연결: For instruments such as guitars or basses, use 1/4-inch jack cables to connect to the 'Instrument Inputs' on the front panel.
6. 출력 연결 : Connect the 'OUTPUT' XLR connectors on the rear panel to your audio interface, mixer, or other recording equipment using balanced XLR cables.
7. Insert Connections: If using external hardware processors, connect them to the 'SEND' and 'RETURN' 1/4-inch TRS jacks on the rear panel for each channel.

Figure 2: Rear panel of the Focusrite ISA Two, showing microphone, line, output, and insert connections.

작동 지침

This section details the operation of the ISA Two preamplifier's controls:

1. 전원 켜기: After all connections are made, switch the power button on the front panel to the ON position.
2. 입력 선택: Use the 'Input' buttons (Mic, Line, Inst) to select the appropriate input source for each channel. Ensure only one input type is active per channel.
3. 게인 컨트롤 : The large 'Gain' knob adjusts the primary gain level (e.g., 0-30 dB, 30-60 dB). The smaller 'Trim' knob provides fine-tuning (+/-10 dB) for precise level setting.
4. Variable Input Impedance (Z In): For microphone inputs, select one of the four impedance settings (Low, ISA 110, Med, High) to optimize the interaction with your microphone. Experiment to find the best sonic match.
5. 팬텀 전원(+48V): Activate the +48V button for condenser microphones that require phantom power. Ensure the microphone is connected before engaging phantom power.
6. 하이패스 필터(HPF): Engage the 'Filter' button and use the 'High Pass Filter' knob to remove unwanted low-frequency rumble or proximity effect. The filter offers an 18dB/octave slope.
7. Insert Function: Press the 'Insert' button to engage any external hardware processors connected to the rear panel insert points.
8. 측광 : Monitor your signal levels using the eight-LED array. Adjust gain and trim to achieve optimal levels without clipping (red LEDs). The VU meter provides an average level indication.

For a visual demonstration of the ISA Two in action, watch the official product video:

유지

To ensure the longevity and optimal performance of your Focusrite ISA Two, follow these maintenance guidelines:

• 청소: 제품 외부를 닦을 때는 부드럽고 마른 천을 사용하십시오. 연마성 세척제, 용제 또는 왁스는 사용하지 마십시오.
• 통풍: Ensure adequate airflow around the unit, especially if rackmounted, to prevent overheating.
• 저장: When not in use for extended periods, store the unit in a cool, dry environment away from direct sunlight and extreme temperatures.
• 케이블 관리 : Keep cables organized and free from kinks or excessive tension to prevent damage to connectors and the unit.

문제 해결

If you encounter issues with your ISA Two, consider the following common troubleshooting steps:

• 전원 없음: Check the power cable connection to both the unit and the wall outlet. Ensure the power switch is ON.
• 오디오 출력 없음: Verify all input and output cables are securely connected. Check the input selection (Mic, Line, Inst) and ensure phantom power is engaged if using a condenser microphone. Confirm gain levels are appropriately set.
• 왜곡된 오디오: Reduce the input gain and trim levels. Check for proper impedance matching with your microphone. Ensure no cables are damaged.
• 간헐적 신호: Inspect all cable connections for looseness or damage. Try swapping cables to isolate a faulty one.
• 소음/웅웅거림: Ensure all equipment is properly grounded. Check for nearby sources of electromagnetic interference.

If problems persist after these steps, contact Focusrite support for further assistance.

기술 사양

보증 및 지원

The Focusrite ISA Two comes with a 2년 보증 구매일로부터 정상적인 사용 중에 발생한 제조상의 결함 및 오작동을 보장합니다.

기술 지원, 제품 등록 또는 기타 문의 사항은 view the full warranty terms and conditions, please visit the official Focusrite web사이트에서 FAQ와 추가 자료를 찾아보실 수도 있습니다.

온라인 지원: www.focusrite.com/support