[問題]極性導線

leehoun · Unread post by **leehoun** » 2007-07-19, 20:24

用過一種導線..有一頭一定要差吉他另外一頭一定要插在音箱上說不這樣子接會傷到導線而且聲音會不好為什麼會有這種導線出現???這種導線有比較好用???

wizardma · Unread post by **wizardma** » 2007-07-19, 22:07

不知道怎麼個傷法?真的很好奇。可以給個連結嗎?

Unread post by **閃電手** » 2007-07-20, 00:09

連結不上, 從Monster Cable網站剪貼它的相關FAQ過來好了

Q: Will I notice a difference if I hook up my cables in the wrong direction?

A: You probably will not, but if you think that you are experiencing noise problems,
check that they are. Cables are directional for shielding purposes only. Should you
not see these arrows, remember that the signal flow should go in the same direction of
the print on the cable jacket, reading left to right away from the source (source to
destination)

Q: Why do the cables have directional arrows?
A: This is done for shielding purposes only, a design where we do not solder the shield
on the signal destination. This ensures that any noise picked up by the shield
will not be transmitted into your signal path.

Q: Why does my instrument cable have arrows?
A: There are two typical types of cable construction; coaxial and twisted pair.
Coaxial construction, as used in our P500 Rock cable, consists of one conductor
and the shield. Twisted Pair construction, used in our P500 Jazz and all Studiolink cables,
utilizes two conductors and a shield. Connectors such as the RCA type and mono ?
are considered Unbalanced connectors; due to their two contact surface areas,
the tip and the sleeve. (Connectors such as XLR, TRS ? (Tip/Ring/Sleeve,) etc.
are considered Balanced.) A coaxial cable terminated with an unbalanced connector,
uses the conductor as the positive lead, terminated to the Tip, and the shield as the
negative lead, terminated to sleeve. Monster Cable makes our Unbalanced cables,
"Semi-balanced" by utilizing twisted pair cable. We use one conductor as the
positive lead, terminated to the Tip, one conductor as the negative lead, terminated
to the sleeve, and we terminate the shield to the Source side of the cable; thereby
making the cable directional. The theory goes, if you ground the shield at the Source
end and leave it open to "Drain" at the Destination end, any noise or interference
which enters the shield, will be kept from making its way into your destination device.
Source is considered where the signal is originating from, (think it terms of your
signal flow,) Destination is considered the device to which your signal is going.

wizardma · Unread post by **wizardma** » 2007-07-20, 04:08

真的很懷疑電線(銅導體)有那種只能單向導通，反過來會傷到銅線的現象嗎?
不知道會融化還是爆炸。

leehoun · Unread post by **leehoun** » 2007-07-20, 12:21

不知道說...可是之前很多給我長導用的人都說有特定端要接音箱特定端要接吉他還有表演時跟音響公司借長導線他們也都這樣講>< 所以很好奇這種導線到底是怎麼回事

misolsi · Unread post by **misolsi** » 2007-07-20, 13:09

我自己做的導線也是有分方向的耶,我是看yamaha的做,我用canare的導線,那種外面有多加ㄧ層鐵網的那種,input的時候與(-)悍在一起,output的時候不用悍,聽說是可以防干擾,我的線都是這樣,有分output跟input,一些高級的音響線材也大多有分方向,我想應該不是說接吉他接音箱要用哪一頭,應該是說吉他是output,音箱孔是input,要有所區隔吧.

wizardma · Unread post by **wizardma** » 2007-07-20, 13:32

misolsi wrote:我自己做的導線也是有分方向的耶,我是看yamaha的做,我用canare的導線,那種外面有多加ㄧ層鐵網的那種,input的時候與(-)悍在一起,output的時候不用悍,聽說是可以防干擾,我的線都是這樣,有分output跟input,一些高級的音響線材也大多有分方向,我想應該不是說接吉他接音箱要用哪一頭,應該是說吉他是output,音箱孔是input,要有所區隔吧.

導体都是用銅的居多，少數用純銀。鐵不會用來做電線。那個顏色是鍍了其他容易焊接的金屬。銅的導電性比鐵還好哦。

leehoun · Unread post by **leehoun** » 2007-07-20, 20:13

防干擾阿..那應該是不會影響到器材吧最多只是影響聲音的品質了??

misolsi · Unread post by **misolsi** » 2007-07-23, 12:13

不是鐵沒錯,只不過它看起來像"鐵網".