Neumann U 87 Ai Switchable Studio Microphone

การแนะนำ

The Neumann U 87 Ai is a large-diaphragm condenser microphone, recognized as an industry standard for professional audio recording. This microphone features three selectable polar patterns, a switchable high-pass filter, and a 10dB pre-attenuation pad, making it versatile for various recording applications. This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your U 87 Ai microphone.

ข้อมูลด้านความปลอดภัยที่สำคัญ

• Always handle the microphone with care to prevent damage to the sensitive capsule.
• Ensure the microphone is securely mounted on a stand using the provided shockmount to avoid accidental drops.
• The U 87 Ai requires 48V phantom power. Connect it only to equipment that provides standard phantom power.
• Avoid exposing the microphone to extreme temperatures, high humidity, or direct moisture.
• Do not attempt to open or service the microphone yourself. Refer all servicing to qualified personnel.
• เก็บไมโครโฟนให้ห่างจากสนามแม่เหล็กแรงสูง

เนื้อหาแพ็คเกจ

ตรวจสอบว่ามีรายการทั้งหมดอยู่ในแพ็คเกจของคุณ:

• Neumann U 87 Ai Studio Microphone
• EA87 Shockmount
• กระจกบังลมหน้า
• สายเคเบิล XLR
• Wooden Jeweler's Box

Image: The Neumann U 87 Ai microphone resting securely within its custom-fitted wooden storage box, indicating careful packaging.

การตั้งค่า

1. การแกะกล่อง

Carefully remove the microphone and its accessories from the wooden box. Inspect all components for any signs of damage.

2. การติดตั้งไมโครโฟน

Attach the EA87 shockmount to a suitable microphone stand. Gently insert the U 87 Ai microphone into the shockmount, ensuring it is held firmly but without excessive force. The shockmount helps to isolate the microphone from vibrations transmitted through the stand.

3. การเชื่อมต่อไมโครโฟน

Connect the provided XLR cable to the 3-pin XLR connector at the base of the microphone. Connect the other end of the XLR cable to a microphone preamplifier, audio interface, or mixing console that supplies 48V phantom power. Ensure phantom power is turned off on your device before connecting or disconnecting the microphone to prevent potential damage.

การใช้งานไมโครโฟน

1. Polar Patterns

The U 87 Ai offers three selectable polar patterns: omnidirectional, cardioid, and figure-8. These patterns determine the microphone's sensitivity to sound from different directions.

• รอบทิศทาง: Picks up sound equally from all directions. Ideal for capturing room ambiance or multiple sources.
• คาร์ดิออยด์: Most sensitive to sound from the front, with significant rejection from the rear. Suitable for vocals and isolating individual instruments.
• รูปที่ 8: Equally sensitive to sound from the front and rear, with rejection from the sides. Useful for recording two vocalists facing each other or for M/S stereo techniques.

The polar pattern switch is located on the front of the microphone body, below the grille.

ภาพ: รายละเอียด view of the polar pattern switch on the microphone body, showing the symbols for omnidirectional, cardioid, and figure-8 patterns.

2. Pre-attenuation Pad (-10dB)

The U 87 Ai features a switchable -10dB pre-attenuation pad. This pad reduces the microphone's output level by 10 decibels, preventing distortion when recording very loud sound sources, such as close-miked drums or guitar amplifiers. Engage this switch when the input signal is too hot for your preampชีวิต.

Image: A close-up of the -10dB pad switch, clearly labeled, on the side of the microphone body.

3. Low-Frequency Roll-off

A switchable low-frequency roll-off (high-pass filter) is integrated into the U 87 Ai. This filter attenuates frequencies below approximately 100 Hz, which can be useful for reducing unwanted rumble, handling noise, or proximity effect when close-miking. The switch for the low-frequency roll-off is typically located near the polar pattern and pad switches.

4. การจัดวางที่เหมาะสมที่สุด

Microphone placement significantly impacts the recorded sound. Experiment with distance and angle relative to the sound source to achieve the desired tonal balance and minimize unwanted room reflections. For vocals, a pop filter is recommended to reduce plosives.

การบำรุงรักษาและการดูแล

• การทำความสะอาด: Use a soft, dry cloth to wipe the microphone body. Do not use liquid cleaners or solvents, as they can damage the finish or internal components.
• พื้นที่จัดเก็บ: When not in use, store the microphone in its original wooden box or a protective case to shield it from dust, moisture, and physical impact.
• การจัดการ: Avoid dropping or subjecting the microphone to harsh impacts. The capsule is a delicate component.
• สิ่งแวดล้อม: Operate and store the microphone in a clean, dry environment with stable temperature and humidity.

การแก้ไขปัญหา

• ไม่มีเสียง:
  • Ensure 48V phantom power is enabled on your preamplifier หรืออินเทอร์เฟซเสียง
  • ตรวจสอบการเชื่อมต่อสาย XLR ทั้งหมดเพื่อให้ติดตั้งได้ถูกต้อง
  • ลองใช้สาย XLR เส้นอื่นดูครับ
  • ตรวจสอบว่าค่าเกนอินพุตบนพรีของคุณampตั้งค่าลิฟเวอร์ให้เหมาะสม
• เสียงผิดเพี้ยน:
  • If recording loud sources, engage the -10dB pre-attenuation pad on the microphone.
  • ลดค่าเกนอินพุตบนพรีของคุณampชีวิต.
  • ตรวจสอบให้แน่ใจว่าไมโครโฟนไม่ได้รับเสียงดังเกินไปจากแหล่งกำเนิดเสียงที่ดังเกินไป
• Excessive Bass/Rumble:
  • Engage the low-frequency roll-off switch on the microphone.
  • Increase the distance between the microphone and the sound source to reduce proximity effect.
• Intermittent Sound/Noise:
  • ตรวจสอบสายเคเบิลหรือขั้วต่อว่าชำรุดหรือไม่
  • Ensure proper grounding of all audio equipment.
  • Verify that the microphone is not picking up electrical interference from other devices.

ข้อมูลจำเพาะทางเทคนิค

การรับประกันและการสนับสนุน

The Neumann U 87 Ai microphone is covered by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Neumann website. For technical support, service, or replacement parts, please contact an authorized Neumann service center or your dealer.

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ข้อมูลการกำจัด

Do not dispose of this product with household waste. Electronic equipment contains materials that can be harmful to the environment if not disposed of properly. Please consult your local authorities for information on proper disposal and recycling options for electronic devices.