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楼主 |
发表于 2022-5-15 01:14
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说到底，我还真认真的看了一下你发的这几个链接，
第一个鬼佬论坛的，说的是放大器输出端测量和喇叭输入端测量的讨论,你能看懂？
第二个链接是某公司的网页，说的也是放大器输出端和喇叭输入端的测量结果，你发的这图是接到全频喇叭的3组6米线的测试结果，左边是放大器端，右边是喇叭端，然而人家要说明的意思是功放输出端测到的数据和喇叭输入端测到的数据会不一样，并没说3组线有何区别。你要说右边3组喇叭端测试结果都不一样说明3组线有区别，我不怪你，因为你没注意到左边输出端其实也不一样，有兴趣你再自己去看看，别看到不一样就乱叫。最后他下面5米和50米的1.6HZ波形测试你看了没？？？？5米线材两种咸菜测的波形都基本一样效果，只有加长到了50米，确实是有明显的区别,且长距离传输信号同轴信号还原度优于平行线，这谁都知道。没事多认真看书。
第3个链接我就懒得说了。抄一段下来大家看吧。
With this much information, we might think we have the subject nailed down. However, we could easily install the finest amplifiers, cables, and terminating impedances and achieve 100 times the distortion of the amplifier alone. Loose, dirty, or oxidized connections can, while measuring well with an ohmmeter, cause high amounts of harmonic and intermodulation distortion. When high distortion occurs during an amplifier checkout at Threshold one of the first things we do is replace or tighten the cable from the amplifier to the load; we have thus cured many “defective” amplifiers.
Copper and aluminum oxidize quickly and oils from our fingers find their way to the conductor surfaces, causing poor contact; so on more than one occasion the dramatic improvement provided by an exotic cable has merely demonstrated the extremely poor quality of the previous cable’s long neglected connections. Wire connections can age, and anyone wishing to accurately evaluate the newer cable’s improved quality should first renew the contacts on his current set. Banana plugs and five-way binding posts make excellent connectors as long as they are kept clean; however, while the connector’s plated surface resists corrosion, the wire to the connector interface can become bad and should be periodically checked, especially if it is subject to motion.
确实人呢，认真看，不是别人说什么就是什么的，看了，要回分辨那些是正确的，别看一部分，有时候忽略了细节会导致认知错误被带偏，有个成语叫什么来着，管中窥豹，挺适合的。 |
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发表于 2022-5-11 20:54
