迷你三输入音频放大器带麦克风混音器
3 Switchable Inputs — RCA, 3.5mm, TOSLINK — with RS232, IR & Front Panel Control
Routes audio from any combination of analog or digital sources through a single 40-watt amplifier output switchable between 70V and 100V distributed speaker systems — with built-in MIC mixing, ducking, Bass/Treble EQ, and 48V phantom power in a compact desktop chassis. Three switchable inputs (dual-mono RCA, 3.5mm stereo, and TOSLINK optical) handle the full range of source types found in installed AV environments.
Designed for classrooms, conference rooms, lecture halls, restaurants, and hospitality spaces, the AP3DBL supports RS232 serial control with 16 addressable ID codes for multi-unit installations, IR remote control, and front panel operation. MIC input accepts condenser, dynamic, and wireless microphone types with balanced/unbalanced signal support and automatically ducks line audio when MIC signal is detected.
- Fast-switching 3 audio inputs: dual-mono RCA (Input 1), 3.5mm stereo (Input 2), TOSLINK digital optical (Input 3)
- Mono 40W amplifier output switchable between 70V and 100V distributed speaker systems
- 3-level MIC input — supports condenser (48V phantom), dynamic, and wireless/line microphone types
- MIC port supports balanced and unbalanced signals with effective external noise suppression
- Ducking function — auto-attenuates line audio when MIC signal is detected; recovers after 5 seconds of silence
- 16 addressable ID codes (0–F hex) for RS232 multi-unit control loops
- Volume, Bass, and Treble independently adjustable via front panel buttons, IR remote, and RS232
- Stereo line audio output for daisy-chain feed to additional zone amplifiers or recorders
- RS232 control via 3-pole captive screw connector (9600 baud, 8N1)
- ID loop pass-through for multi-unit RS232 chaining
- IR remote and external IR receiver support
- 48V phantom power for condenser microphone supply
- Dual-mono output capability
- LED indicators for power and input selection status
- Convection cooled, antistatic case design
- Locking DC power connector (24V DC adapter included)
- CE, FCC, UL certified
音频输入：
- 2 个立体声音频接口（RCA，3.5 毫米）
- 1 个数字音频接口（TOSLINK）
- 1 个麦克风（带固定螺丝连接器）
音频输出：
- 1 个单声道放大器（3 针固定螺丝连接器）
输出类型： 40W，70V 或 100V
输入端 1 和 2 的输入阻抗：>10KΩ
输出阻抗： 50Ω/立体声，4~8Ω/放大器
音频概览：
频率响应：
- 输入：120Hz ~ 20KHz
- 输出：共模抑制比 >70dB@20Hz~20KHz
信噪比：最大输出时为 80dB
带宽： 120Hz ~ 20KHz
立体声声道分离度：
- 输入：>75dB@20Hz 至 20kHz
- 输出：总谐波失真加噪声 (THD+N) 1% (1kHz)，0.3% (20kHz)（标称电平）
电压增益： 32dB
麦克风输入阻抗： 48V：35千欧姆
麦克风： 10千欧姆
线路： 75千欧姆
麦克风音频检测延迟： < 1毫秒
共模抑制比： >70dB（20Hz-20KHz）
控制：
- RS-232串口
- 9针D型母连接器
- 红外遥控传感器
引脚配置：
- 2 = TX，3 = RX，5 = GND
通过 TCPRS2 进行TCP/IP 控制
功耗： 3.6 瓦
电源：24V 直流
尺寸： 1.5英寸 x 3.78英寸 x 3.45英寸（高 x 宽 x 深）
重量： 0.67磅（0.3公斤）
保修：三年零件及人工保修
行业标准与认证：
CE、FCC、UL认证
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