本帖最後由 juniorx 於 2009-12-2 06:45 編輯
尋日有d時間落鴨記打個round,
有個排擋尊賣電容, 磁環@$3
街頭(近西九龍)魚竿對面有間電腦夜冷, 磁環$10 3粒
其他shop一般做$5-$8粒
報告完畢
Thx for your update!
我試過加磁環,用音壓計度,發現於10000Hz同16000Hz都小左約3db,唔加好o的!{:6_183:}
thx fof your good info
師兄：
>磁環 只可以加在 non-audio 的位置上, 可以吸干擾.
>加在 audio 的線材上, 無錯會靜左, 不過會吸哂 d 高頻.
Video咪更高頻過audio，加左會唔會仲差？
家中家電多, 加多噪音 & 干擾. "磁環是用在電腦, 風扇的PC上, 因為可以吸收佢地發出的 EMF,RF 防止干擾到 AV 器材."
磁環加在 audio pc or 訊號線上:
正面影響:
會令audio quality 細緻d & 静態d.
負面影響:
會 ...
djaddy 發表於 2009-11-30 20:26 http://www.post76.com/discuss/images/common/back.gif djaddy 大師兄, 原來你識日文架, 好西利呵!! ANYWAY, 呢 D 東東在那埋有得買?
師兄：
>磁環 只可以加在 non-audio 的位置上, 可以吸干擾.
>加在 audio 的線材上, 無錯會靜左, 不過會吸哂 d 高頻.
Video咪更高頻過audio，加左會唔會仲差？ ...
wong.siufu 發表於 2009-12-3 12:28 http://www.post76.com/discuss/images/common/back.gif
It has different affects on different brands of TV. As tested:
海信: 色彩鮮明, 對立, 立體感都會强左.對比度, 立體感都强左.
Sony & Philips: 反為覺得好似差左 小小, 效果有係不及無加.
{:6_146:}
我試過加磁環,用音壓計度,發現於10000Hz同16000Hz都小左約3db,唔加好o的!{:6_183:}
loklok31 發表於 2009-12-2 23:35 http://www.post76.com/discuss/images/common/back.gif
This is a very important observation. Thx a lot, ching!
本帖最後由 djaddy 於 2009-12-5 22:25 編輯
I did more investigations: 磁環 & 鋼沙 have similar characteristics...
"Passive noise-reduction avoids the dynamically compressive effects commonly associated with ferrites (磁環), transformers, chokes and coils."
我試過加磁環,用音壓計度,發現於10000Hz同16000Hz都小左約3db,唔加好o的!
I used 鋼沙 @ my TV pc before, resulting in contrast being too strong and unnatural results. LCD goes up to 60kHz.Hence, 磁環 should not be applied to video or audio equipment.
Noting that when the environment improves, your av performance will improve. Therefore, 磁環 should be used @ air-conditioner, fridge, washing machine and microwave. I have applied 磁環 in my fuse box @ all the ground cables & all power cables EXCLUDING the power line for my AV system.
Thanks for your sharing again!!
