the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

Voice coils & amp wattage


Post ReplyPost New Topic
< Prev Topic Next Topic >
Thuan 
Copper - Posts: 88
Copper spacespace
Joined: May 20, 2004
Location: United States
Posted: November 09, 2004 at 2:09 AM / IP Logged  
How can I tell if my voice coils are working properly? Also, how do I check to see how many watts my amp is putting out? Am I suppose to use a multi meter...if yes, then how am I suppse to check it with a multi meter?
Thuan
Thuan 
Copper - Posts: 88
Copper spacespace
Joined: May 20, 2004
Location: United States
Posted: November 09, 2004 at 3:12 PM / IP Logged  
anyone?
Thuan
DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: November 09, 2004 at 3:30 PM / IP Logged  

What do you mean by "if my voice coils are working properly?"  Do your speakers work? 

You cannot directly measure power output from your amplifier with a multimeter.  You can measure the AC voltage output and calculate the approximate effective average power by using the loudspeaker's average impedence and Ohm's law...

Support the12volt.com
Thuan 
Copper - Posts: 88
Copper spacespace
Joined: May 20, 2004
Location: United States
Posted: November 09, 2004 at 4:12 PM / IP Logged  

I meant if one of my voice coils are burnt or not (subwoofer). Do I just hook it up and make sure there's continuity within each coil? I'm not sure if my amp is working properly so I want to check everything before I send it back for another one.

Ohm's law...E=IxR?...that would give me Voltage = Amperage x Resistance right? But how do I figure wattage from that?

Thuan
jeffchilcott 
Platinum - Posts: 2,483
Platinum spacespace
Joined: April 11, 2002
Location: United States
Posted: November 09, 2004 at 4:25 PM / IP Logged  
If you take your amperage and mulitply it times you current draw you will get wattage
2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: November 09, 2004 at 4:37 PM / IP Logged  

Yes, read the DC resistance on each voice coil with your ohm meter.  If the sub has two coils, they should both read about the same value.  If they do not, the one that is significantly higher is probably burned.

Power = Voltage squared / Resistance.  https://www.the12volt.com/ohm/ohmslaw.asp

Support the12volt.com
Thuan 
Copper - Posts: 88
Copper spacespace
Joined: May 20, 2004
Location: United States
Posted: November 09, 2004 at 4:59 PM / IP Logged  
Thanks guys.
Thuan

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

  Printable version Printable version Post ReplyPost New Topic
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 Follow the12volt.com on Facebook
Thursday, October 31, 2024 • Copyright © 1999-2024 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
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.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer