LED 指示灯

LED 指示灯可用于监视系统操作和识别一般问题。

电源:交流电源开关上面左边的一个绿色指示灯。

正常指示:AC 开关开:LED 亮。

若无指示:检查 AC 电源线和 AC 插座。

接线柱:两个红色 LED,每个通道一个指示灯。

当放大器超出满功率驱动时随时闪亮。失真结果与 LED 的亮度对应。短暂闪烁造成的 失真几乎感觉不到。

在静音状态下,LED 完全闪亮。当处于正常的 “开 - 关”静音下会发生此种情况。

异常显示:

如果放大器正在使用时发出鲜红色闪亮,说明是热静音或是短路输出。

如果放大器过热,风扇会全速运转,操作会在一分钟内重新开始。让风扇运转,确保放 大器有足够的通风。

短路或超载输出电路会造成过度的削波闪烁和可能过热。

如果可以感觉到失真,而没有出现接线柱指示,问题可能发生在放大器之前或之后。检 查是否有损坏的扩音器或超载信号源。放大器增益控制应该在此范围的上半段以防输入 过载。

信号:两个绿色 LED,每个通道一个指示灯。

电源开指示灯。

CH

正常指示:输入信号强大能够将额定 8 欧姆功率驱动到- 40dB 输出时,会闪亮。随着 信号接近最大功率,LED 会连续闪烁。

若无指示:检查增益设置,如果需要,增加增益。检查输入端连接和信号的音频源。如 果接线柱 LED 闪亮只有很少或没有信号显示,检查输出线是否短路。

非正常指示:如果信号 LED 闪亮,而没有信号输入,可能是系统震动或其他故障。断 开负载,大幅度降低增益。如果信号 LED 保持为开,放大器可能需要进行维修。

两个通道都有接线柱和 信号指示灯。

保护 (仅限 ISA1350):一个红色 LED 开关 AC 开关在电源开关的左边的电源 LED 下 面。

正常指示:不亮 (注意!如果两个后面板 AC 电路断路器都打开,保护 LED 和 LED 电源 将不亮)

非正常指示:闪亮。如果保护 LED 闪亮,放大器处于热保护状态或者一个 AC 电路断路 器处于打开状态。如果放大器过热,将 AC 电源开关处于打开状态,风扇可将放大器冷 却。放大器充分冷却后自动恢复正常操作。如果一个 AC 电路断路器 (后面板)打开, 按下里面的 reset 按钮重启断路器。

增益控制

顺时针转动增益控制,增大增益;逆时针转动,减小增益。

增益控制按分贝 (dB) 衰减。有 11 个制动器可进行重复调试。上面的 6 个步骤大约是 每步骤 2 dB,正常的设置应该在这个范围内。低于 -10 dB 的范围不能用于正常程序水 平,因为输入净空可能被超过,但可在降低水平下测试。在最小设置下,信号完全被切 断。

抓住控制杆旋转可以调整增益控制。

增益控制在后面板

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QSC Audio SA 1350 user manual Led 指示灯, 增益控制

SA 1350 specifications

The QSC Audio SA 1350 is a powerful and versatile amplifier that stands out in the world of professional audio. Designed for a variety of applications, including live sound, installation, and event production, the SA 1350 delivers high performance and reliability, making it a favorite among audio engineers and technicians.

One of the standout features of the SA 1350 is its robust power output. With a continuous power rating of 1,350 watts at 4 ohms, this amplifier is capable of driving large speakers with ease, providing clean and distortion-free sound even at high volumes. The amplifier is designed to handle a wide range of speaker impedances and configurations, allowing users to tailor their audio setup to their specific needs.

The SA 1350 utilizes QSC’s advanced PowerLight 3 technology, which provides a lightweight yet powerful solution for amplifying sound. This technology integrates high-efficiency Class D amplification with a switch-mode power supply, resulting in reduced weight and increased energy efficiency. The amplifier's compact form factor makes it easy to transport and install, without sacrificing performance.

Heat management is another important aspect of the SA 1350’s design. The amplifier features a patented, high-efficiency cooling system that includes advanced thermal protection circuits. This ensures the amplifier remains cool during operation, reducing the risk of overheating and extending the lifespan of the unit.

Connectivity options are versatile, with XLR and 1/4-inch inputs allowing for seamless integration with various audio sources. Additionally, the SA 1350 is equipped with output binding posts and Neutrik Speakon connectors, accommodating different types of speaker cables and setups.

The QSC Audio SA 1350 also emphasizes user-friendly operation. With its intuitive front panel control layout, users can easily adjust gain settings and monitor performance through LED indicators. Its rugged construction is built to withstand the rigors of touring and installations, ensuring reliability in any environment.

In summary, the QSC Audio SA 1350 is a powerful, efficient, and reliable amplifier that combines advanced technology and practical features. Whether used for live sound applications, installations, or events, the SA 1350 consistently delivers exceptional audio performance that meets the demands of professionals in the audio industry. Its blend of power, efficiency, and versatility makes it an indispensable tool for any audio setup.