R300 wireless microphones
- ClearScan 只需一键即可搜索出清晰的频道
- EZsync 红外通道同步发射机和接收机，实现简便无误的设置
- PL22 心形动圈话筒头，还原清脆、干净的人声，满足不同应用要求
EV R300 系列无线话筒开创了无线话筒市场的一个新纪元：入门级专业产品。通过一键式的ClearScan通道扫描和EZsync同步发射机，令R300 的设置和使用变得如此之简单。
产品
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R300-HD |
R300-E |
R300-L | |
| 连接器型号 | 1/4 inch unbalanced, 3-pin XLR balanced | 1/4 inch unbalanced, 3-pin XLR balanced | 1/4 inch unbalanced, 3-Pin XLR balanced |
| 家族 | R300 | R300 | R300 |
| 分集 | True Antenna | True Antenna | True Antenna |
| 电源 | 12 VDC, 500mA max | 12 VDC, 500 mA max | |
| 噪声控制 | Tone code plus Amplitude | Tone code plus Amplitude | Tone code plus Amplitude |
| 电池寿命 | 14 hours with (2) AA alkalines typical | 14 hours with (2) AA alkaline typical | 14 Hours with (2) AA alkalines typical |
| 接收器类型 | Synthesized PLL | Synthesized PLL | Synthesized PLL |
| 指向性 | Cardioid | Omnidirectional | Cardioid |
| 射频输出 | 8 mW typical | 8 mW typical | 8 mW Typical |
| 工作温度范围 | 5º - 45º C (41º - 113º F) | 5º - 45º C (41º - 113º F) | 5º - 45º C (41º - 113º F) |
| 元件 | PL22 Cardioid Dynamic | HM-3 Omni-directional headworn | ULM18 Directional Microphone |
| 射频频率范围 | 16 | 16 | 16 |
| 射频灵敏度（12dB信噪比） | less than 1.0 | less than 1.0 | less than 1.0 |
| 箱体材料 | Metal | metal | Metal |
| 音频响应 | 80 Hz - 18kHz +/- 2dB | 80 Hz - 18kHz +/-2dB | 80 Hz - 18kHz +/- 2dB |
| 信噪比（A声压级） | greater than 100 | greater than 100 | greater than 100 dB |
| 平衡线路电平输出（RMS可调） | 10 - 100 | 10 - 100 | |
| 电源要求 | 12-16 VDC, 500 mA max | 12-16 VDC, 500 mA max | 12-16 VDC, 500 mA max |
| 失真 (@ 1 kHz, 40 kHz 偏差) | less than 1.0, 0.4 typical | Less than 1.0, 0.4 typical | less than 1.0, 0.4 typical |
| 动态范围 | greater than 95 | greater than 95 | greater than 95 dB |
| 控制开关 | on/off, Set, Up, Down, Sync | on/off, Set, Up, Down, Sync | On/Off, Set, Up, Down, Sync |
| 天线 | Flexible TNC 1/2 Wave | Flexible TNC 1/2 Wave | Flexible TNC 1/2 Wave |
| 频道数量 | 32 | 32 per band, 8 Simultaneous | 32 Per Band, 8 Simultaneous |
| 更多 | 更多 | 更多 |
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