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D-HPA3 3.5W 扩音器/耳机扩音器
● 双输出壁装式扩音器
● 背板平衡输入
● 背板扬声器输出
● 通过耳机连接关闭扩音器的设置
● 通过固定开关实现扩音器静音
● 扬声器的单声调增益调节
● 3.5W扬声器功率输出为8欧姆
● 6.5W扬声器功率输出为4欧姆
● 输出驱动 4 或 8欧姆扬声器
● 高效D 类操作
● 过热和短路保护
● 推荐电源 : PS24AX
● 另备 DB-HPA3 (黑色) 及 DS-HPA3 (不锈钢)

 

 

( 另备 C 版本  - 自定文本 )

 

 

  • 技术参数
  • 资料下载
Input : 20 kΩ balanced or unbalanced bridging
Input Level:
+4 dBu nominal (Balanced, Low input sensitivity);
-15 dBV nominal (Unbalanced, High input sensitivity)
Minimum Input Level:
-18 dBu (Balanced, Max. gain)
Maximum Input Level:
+22 dBu (Low input sensitivity);
+4 dBu (High input sensitivity)
Gain Adjustment:
Single-turn audio taper (front-panel)
Output Power (headphones):
10 mW into 100 ohms (normal);
30 mW into 100 ohms (maximum)
Output Power (speaker):
3.5 W RMS (Max., into 8 ohms);
6.5 W RMS (Max., into 4 ohms)
Frequency Response:
20 Hz to 50 kHz (Headphones, ± 1 dB);
20 Hz to 20 kHz (Speaker, ± 1 dB)
THD+N:
< 0.1% (Headphones, 20 Hz to 20 kHz, 10 mW into 100 ohms);
< 0.1% (Speaker, 1 kHz, 1 W)
Noise:
< -85 dB (Headphones, below 10 mW into 100 ohms);
< -80 dB (Speaker, below 1 W into 8 ohms)
CMRR : > 50 dB (50 Hz to 120 Hz)
Power Requirement:
24 Vdc @ 30 mA (Idle);
55 mA (1/8 power; normal voice or music); 225 mA (3.5 W into 8 ohms)
Dims : H 10.49 cm; W 4.32 cm; D 5.21 cm
Shipping Weight : 0.2 kg
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