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THE WITZL Forums Junkie Toymods Social Secretary Location: Sydney Registered: July 2002	Re: CAR AUDIO: Determining +/- on oem speakers/wiring Mon, 08 March 2004 12:18 i think a few of you should read some 2nd year electrical engineering texts - namely "ELECTRICAL ENGINEERING: Principles and Applications" and any "SIGNALS AND SYSTEMS" texts. A sound wave is the sum of an arbitrary number of sine waves of varying amplituded and frequency. Take ANY sound wave and you can break it down into individual sine waves added together. Thus, in a way, a sound wave IS AC - but not in the sense that some of you are talking about (240V mains). It is a non-linear signal, in which voltage moves about a mean point (0 Volts). In the situation of a speaker, this change in voltage from posititve to negative is what moves the speaker's coil back and forth around a "mean" resting point (0 volts). Wiring a speaker "out of polarity" is an incorrect statement, since there really is no polarity to speak of in a sinusoidal system. If you wire up a speaker backwards you are wiring it "out of phase", meaning that the speaker will move in the opposite direction of what is intended, placing the sound wave 180deg out of phase with the original signal. If this doesnt clear anything up - please read the aforemention texts. EDIT: as far as amplifiers go.... lets not get confused by switchmode technology tonight ok? [Updated on: Mon, 08 March 2004 12:21] [Report message to a moderator]

	Subject	Poster	Date
	CAR AUDIO: Determining +/- on oem speakers/wiring	rvrolla	Mon, 08 March 2004 02:51
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	praetor	Mon, 08 March 2004 03:10
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	V8_MA61	Mon, 08 March 2004 08:41
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	rvrolla	Mon, 08 March 2004 03:17
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	T APLUS 22	Mon, 08 March 2004 03:20
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	praetor	Mon, 08 March 2004 03:21
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	T APLUS 22	Mon, 08 March 2004 03:41
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	feral4mr2	Mon, 08 March 2004 03:46
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	THE WITZL	Mon, 08 March 2004 04:24
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	T APLUS 22	Mon, 08 March 2004 13:46
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	rvrolla	Mon, 08 March 2004 04:36
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	praetor	Mon, 08 March 2004 05:04
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	feral4mr2	Mon, 08 March 2004 07:54
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	THE WITZL	Mon, 08 March 2004 09:17
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	ed_ma61	Mon, 08 March 2004 09:23
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	praetor	Mon, 08 March 2004 10:58
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	ed_ma61	Mon, 08 March 2004 11:48
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	V8_MA61	Mon, 08 March 2004 11:50
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	THE WITZL	Mon, 08 March 2004 12:18
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	V8_MA61	Mon, 08 March 2004 12:34
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	feral4mr2	Mon, 08 March 2004 12:36
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	HedgehogSandwich	Mon, 08 March 2004 12:39
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	praetor	Mon, 08 March 2004 22:00
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	HedgehogSandwich	Mon, 08 March 2004 23:48
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	praetor	Tue, 09 March 2004 00:11
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	Scorpion	Tue, 09 March 2004 01:42
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	feral4mr2	Tue, 09 March 2004 12:20
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	praetor	Tue, 09 March 2004 02:14
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	Seadog	Tue, 09 March 2004 04:03
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	THE WITZL	Tue, 09 March 2004 04:33
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	Scorpion	Tue, 09 March 2004 09:03
	Re: CAR AUDIO: Determining +/- on oem speakers/wiring	HedgehogSandwich	Tue, 09 March 2004 11:50

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