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發表於 2010-12-27 08:27:29
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Thanks for sharing C-Hing! Is the sound improved?
Al26 發表於 2010-12-27 06:18 
Hello ching,
Below is my 灌沙 research from earlier.
Research:
To eliminate harmonic vibrations, I have experimented with many different materials for 灌沙線. I tested, (深)海底幼沙, 碳粉, 鋼沙, 石英沙 & 澳門黑幼沙 (contains 海綠石). Each of these materials have different properties. Hence, they will have different audio characteristics. After much research, numerous tests & experiments, I conclude that high density, non intrusive materials with small grain size are the key factors for the best outcome. A portion of 碳粉 is added to eliminate EMF.
The best results for music (分析力, 細緻度, 高中低, 密度等):
1. (深)海底幼沙 + 碳粉
2. 澳門黑幼沙
Caution: 鋼沙會cut頻
以保留 "原味"架仔廠線不用鋼沙, 原因是 electric current induces magnetic fields. 鋼沙 is not a natural but an intrusive material that will intrude the flow of electric currents. So it's not a good shielding material. 鋼沙 may sound more dynamic initially. However, overtime 鋼沙會cut頻. Which means lot of audible details will be missing.
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magcur.html |
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