Polarity question

pcwu · 10th July 2011, 01:10 AM

If a +ve DC voltage apply to a speaker (+ve to speaker + and gound to speaker -), what should the driver cone react? being pushed outward or pulled inward? Is this common for all drivers no matter it's woofers or tweeter?

Cal Weldon · 10th July 2011, 02:00 AM

If you have a jbl driver you might be surprised. Normally a DC+ will give you forward cone movement.

Use a 1.5V battery for your test. Do it for only as long as it takes to get your answer. Do this with woofers and mids only. Tweeters sometimes don't like it.

pcwu · 10th July 2011, 02:38 AM

Thx for the prompt advice, since some of my drivers have no polarity mark on them which I need to figure it out.

Cal Weldon · 10th July 2011, 02:55 AM

The test remains the same.

10th July 2011, 01:10 AM	#1
pcwu diyAudio Member Join Date: Aug 2010	Polarity question If a +ve DC voltage apply to a speaker (+ve to speaker + and gound to speaker -), what should the driver cone react? being pushed outward or pulled inward? Is this common for all drivers no matter it's woofers or tweeter?

10th July 2011, 02:00 AM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	If you have a jbl driver you might be surprised. Normally a DC+ will give you forward cone movement. Use a 1.5V battery for your test. Do it for only as long as it takes to get your answer. Do this with woofers and mids only. Tweeters sometimes don't like it. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

10th July 2011, 02:55 AM	#4
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	The test remains the same. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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10th July 2011, 02:38 AM	#3
pcwu diyAudio Member Join Date: Aug 2010	Thx for the prompt advice, since some of my drivers have no polarity mark on them which I need to figure it out.

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