AT8004 - Mikrofon Audio-Technica - Kostenlose Bedienungsanleitung
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BEDIENUNGSANLEITUNG AT8004 Audio-Technica
OMNIDIRECTIONAL DYNAMIC MICROPHONE
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Black-and-white photo of a desktop microphone on a stand, showing its neck and cable (no text or symbols visible)- Ideal for interviews, sports broadcasting and as the "mono" mic when used in conjunction with a stereo microphone
- Omnidirectional polar pattern provides natural reproduction of surrounding ambience
- Rugged housing with hardened-steel grille stands up to field use
- Internal shock mounting minimizes handling and cable noise
Output from the microphone's XLRM-type connector is low impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3; Pin 1 is ground (shield). Output phase is "Pin 2 hot" – positive acoustic pressure produces positive voltage at Pin 2.
To avoid phase cancellation and poor sound, all mic cables must be wired consistently: Pin 1-to-Pin 1, etc. For a high-impedance (Hi-Z) mic input, connect a Lo-Z balanced cable to a Hi-Z matching transformer (Audio-Technica CP8201 or equal) at the equipment input.
| Plug Type | Ground | Audio “+” | Audio “-” |
| XLR | Pin 1 | Pin 2 | Pin 3 |
| 14 " TRS | Sleeve | Tip | Ring |
| 14 " | Sleeve | Tip | Sleeve |
The microphone is RoHS compliant-free from all substances specified in the EU directive on hazardous substances.
Take care to keep foreign particles from entering the windscreen. An accumulation of iron or steel filings on the diaphragm, and/or foreign material in the windscreen's mesh surface, can degrade performance.
SPECIFICATIONS
| ELEMENT Dynamic | |
| POLAR PATTERN Omnidirectional | |
| FREQUENCY RESPONSE 80-16,000 Hz | |
| OPEN CIRCUIT SENSITIVITY -51 dB (2.8 mV) re 1V at 1 Pa | |
| IMPEDANCE 300 ohms | |
| WEIGHT 160 g | |
| DIMENSIONS | 150.5 mm long,35.8 mm head diameter |
| OUTPUT CONNECTOR Integral 3-pin XLRM-type | |
| ACCESSORIES FURNISHED | AT8405a stand clamp for 58 "-27 threaded stands; 58 "-27 to 38 "-16 threaded adapter;soft protective pouch |
radar
| Angle | Scale Factor of 5 dB to 10 dB | |-------|-------------------------------| | 0° | 200 Hz | | 30° | 150 Hz | | 60° | 100 Hz | | 90° | 75 Hz | | 120° | 50 Hz | | 150° | 25 Hz | | 180° | 10 Hz | | 210° | 5 Hz | | 240° | 2 Hz | | 270° | 1 Hz | | 300° | 5 Hz | | 330° | 1 Hz | | 360° | 5 Hz |
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| Frequency (Hz) | Decibel (dB) | | -------------- | ------------ | | 20k | 10 |全指向性动圈话筒
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Black-and-white photo of a desktop microphone on a stand, showing its neck and cable (no text or symbols visible)- 适合于采访及体育运动收音，并可配合立体声话筒作中央单声道收音。
- 全方向指向性收音，有效地全环境收音效果和清晰及准确的重播。
- 坚固金属外壳和收音头保护钢网结构，更合适在户外使用。
- 内置抗震垫设计，减至最小的手持摩擦和连接线噪声。
话筒的XLRM卡农输出端为低阻抗平衡输出，话筒音频信号最终以卡农公头的2号及3号针脚输出，而1号针脚则为地线(屏蔽)连接。输出相位将以正相位电平设于2号针脚上。
为避免出现相位相互抵消而失真的情况，所有话筒连接时，接线必需以1-1，2-2，3-3型式把针脚连接。如连接高阻抗的话筒输入，请配套阻抗匹配变压器AT8201。
| 插头类型 | 地线 | 音频+”信号 | 音频“-”信号 |
| XLR 卡农 | 1号针脚 | 2号针脚 | 3号针脚 |
| 14 "TRS 大三芯 | Sleeve(套) | Tip(尖) | Ring(环) |
| 14 "TR 大二芯 | Sleeve(套) | Tip(尖) | Sleeve(套) |
话筒符合 RoHS 规格，在构造上不含有欧盟禁用的危害性物质。
小心不要把金属碎或铁屑掉进防风罩内，铁屑会吸进收音头磁铁中，或贴在防风罩内，将会影响及减低收音效果。
技术指标
| 收音头 动圈式 | |
| 指向特性 全方向指向性 | |
| 频率响应 | 80-16,000 Hz |
| 开通灵敏度 | -51 dB (2.8 mV) 以 1V 于 1 Pa |
| 输出阻抗 | 300 欧姆 |
| 重量 | 160 g |
| 外形尺寸 | 150.5 mm 长,35.8 mm 收音头外径 |
| 输出连接器 内置 | XLRM-3针卡农公头 |
| 附属品 | AT8405a %"-27接头转轴式支架;5%-27至%"-16转接头;保护袋 |
