经常没有得到足够重视的一个重要方面是，该装置如何在现实世界的负载和连接到输出的现实世界的电缆（有时数百米！）下运行。在给定的电子电路内，性能是完全可预测的，因为下一级的输入阻抗是明确定义的，并且驱动级可以针对该固定且不变的负载阻抗进行优化。然而，在实际应用中，输出线路电平级将被要求驱动许多不同且变化的负载（电阻/电容/电感的组合）——就像功率放大器一样。为了保证原始信号传输操作，它必须具有更大的相位裕度、绝对稳定性以及高电压和电流驱动能力，而没有任何保护电路的限制作用。当然，它还必须具有防短路功能。 FM ACOUSTICS 专有的 A 类输出级具有专用电路。它们能够驱动几乎任何长度的电缆和阻抗，具有绝对的稳定性和最高的抗干扰能力。大多数使用线路电平输出级的其他产品都是典型的测试台设计，它们在测试台上运行良好（具有相应的短电缆和固定电阻负载），但在实际应用中无法充分发挥作用。如果后续级和接口（电缆和连接器）未得到最佳驱动，那么即使是最好的电路也是没有用的。这些都是被严重低估的事实，它们对实际系统安装的性能产生严重影响。 FM ACOUSTICS 专有电路可实现极其稳定、准确和超快速的接口，能够以最高线性度处理和提供高达 +28dBv 的电平，并且在高电容和/或电感负载中也能实现这一点。由此产生的固有无失真电路可避免任何信号衰减的可能性，并保证保留最精细的音乐细节。其结果是绝对无与伦比的精度和原始信号传输。与现有线路驱动器相比，性能的改进令人震惊。通过改进输出级，将 FM 214 添加到现有设备的输出级（它改善了源和负载之间的信号传输）时，也会得到明显的改进。 使用 FM ACOUSTICS 技术可以避免任何信号衰减的可能性，并保证保留最精细的音乐细节。其结果是绝对无与伦比的接口精度和卓越的系统性能。与现有线路驱动器相比，性能的提升是惊人的；一旦体验到这种差异，就会清楚为什么 FM 214 和 FM 216 如此成功。
which frequently is not given adequate attention is how the unit will perform with real world loads and real world cables connected to the output (sometimes hundreds of meters!). Within a given electronic circuit performance is quite predictable, as the input impedance of the next stage is clearly defined and the driving stage can then be optimized for this fixed and non-varying load impedance. An output line level stage, however, will in real world applications be asked to drive many different and varying loads (combinations of resistance /capacitance / inductance) - much like a power amplifier. To guarantee pristine signal transfer operation, it must therefore have a much more extended phase margin, absolute stability and high voltage and current drive capability without any limiting action of protection circuitry. Of course it must also be short-circuit proof.
FM ACOUSTICS' proprietary Class A output stages feature a dedicated circuit. They are capable of driving almost any length of cable and impedance with absolute stability and highest interference rejection. The majority of other products using line-level output stages are typical test bench designs that work well on the test bench (with correspondingly short cables and fixed resistive loads) but fail to perform adequately in real world applications. The best circuitry is of no use if the following stage and interface (cables and connectors) are not driven optimally. These are much underrated facts which critically influence the performance in actual system installations.
FM ACOUSTICS proprietary circuitry results in extremely stable, accurate and super-fast interfaces which can handle and supply levels of up to +28dBv at highest linearity, and do this also into highly capacitive and/or inductive loads. The resulting inherently distortion-free circuitry avoids any possibility of signal degradation and guarantees preservation of the finest musical details. The result is absolutely unparalleled accuracy and pristine signal transfer.
The improvement in performance over existing line drivers is astounding. Clear improvements are also experienced when adding the FM 214 to output stages of the existing equipment (it improves signal transmission between source and load) by ameliorating the output stage.
Using FM ACOUSTICS technology any possibility of signal degradation is avoided, and preservation of the finest musical detail is guaranteed. The result is absolutely unparalleled accuracy in interfacing and superior system performance. The improvement in performance compared with existing line drivers is astounding; once this difference is experienced, it becomes clear why the FM 214 and the FM 216 are such a success.
FM 214 Precision Balanced Line Driver ------ FM 214 精密平衡线路驱动器
发表于 2024-5-9 23:17
