how to check for polarity

Home / the12volt's Install Bay / Car Audio / how to check for polarity (

Topic Closed)

Welcome Guest :)

Members

Search

Register

Login

< Prev Topic Next Topic >

snhtown

Copper - Posts: 178

Joined: August 31, 2006

Location: United States

Posted: June 02, 2007 at 7:18 PM / IP Logged

hey guys i have pair of speakers, but they are not maked +/- there is a red dot and i am assuming that marks positive, but i want to be sure. they are cdt's. does anyone know how to check with a meter? is there a way?

Back to Top

swerve

Copper - Posts: 149

Joined: January 10, 2007

Location: Oregon, United States

Posted: June 02, 2007 at 7:40 PM / IP Logged

take a 9 volt battery and hook it up to the speaker and "pop" it. if it goes up your polarity is correct. if it goes down you have to polarity reversed. you can't check it with a meter.

git yer swerve on!

Back to Top

snhtown

Copper - Posts: 178

Joined: August 31, 2006

Location: United States

Posted: June 02, 2007 at 8:03 PM / IP Logged

bummer, thnx ll try that

Back to Top

stevdart

Platinum - Posts: 5,816

This member has made a donation to the12volt.com. Click here for more info.

This member has been recognized as an authority in Mobile Audio and Video. Click here for more info.

This member consistently provides reliable information

Joined: January 24, 2004

Location: Pennsylvania, United States

Posted: June 03, 2007 at 9:20 AM / IP Logged

The red dot is always the positive terminal. On some woofers (such as 8 ohm), it is purple. Another method of marking polarity is wide spade / narrow spade, with the wide spade positive. Otherwise, it is marked with a +.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Back to Top

Sorry, you can NOT post a reply.
This topic is closed.

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

how to check for polarity

Sorry, you can NOT post a reply.This topic is closed.

Sorry, you can NOT post a reply.
This topic is closed.