liuhao Posted August 13, 2007 Posted August 13, 2007 this is the picture of the back of my amplifier showing the AC power socket: two questions: 1) is my marking (in red) correct? 2) is this same for all amplifiers and cd players? need an absolutely correct answers for above.
stealth Posted August 14, 2007 Posted August 14, 2007 The markings that u label is "Difinately Correct" :D
hotbird Posted August 14, 2007 Posted August 14, 2007 Each equipment may be hooked differently, depends on which country of manufacture. Best to do your own testing as below http://www.gcaudio.com/resources/howtos/acpolarity.html
liuhao Posted August 14, 2007 Author Posted August 14, 2007 using this method, i found my amplifier (french made) and cd player (uk made) have different polarity...which also means if above marking in my picture is correct, the cd player follows the standard but amplifier doesnt. weired huh? Each equipment may be hooked differently, depends on which country of manufacture. Best to do your own testing as below http://www.gcaudio.com/resources/howtos/acpolarity.html
Nstarone Posted August 15, 2007 Posted August 15, 2007 using this method, i found my amplifier (french made) and cd player (uk made) have different polarity...which also means if above marking in my picture is correct, the cd player follows the standard but amplifier doesnt. weired huh? We're a Commonwealth country... so we follow British standards. For safety issues, we should place the live on the right as you had pictured but there are countries that use powercords and/or equipment wired the other way around. A lot of this confusion has to do with history (and some national pride). We just have to live with it. I came this across this problem when I was playing with aftermarket power cords - where live and neutral wires are sometimes reversed depending of which territory they are from. Some of them are sold with the L and N already crossed to correct different polarity settings on the equipment end (i.e. American cord for use on British Equipment in the US). Should ask your cord dealer when buying aftermarket cords. Will save you a lot of work later on. In reality (to my ears at least), all your components don't need to work on the same polarity, especially for those that run on RCA interconnects. RCA interconnects are standardised so there should be no problems working with components from opposite ends of the Channel (and the Atlantic). :) For the more fussy ones, you can correct the polarity by wiring the live/neutral wires accordingly at the power plug end where necessary. Just use a multimeter as instructed at the link to decide if you need to cross the polarity and create a "patch"-type power cord instead of a "straight" one, especially if you use aftermarket power cords.
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