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phase, polarity, front to rear, l to r


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ianarian 
Copper - Posts: 516
Copper spacespace
Joined: April 24, 2009
Location: California, United States
Posted: February 03, 2010 at 7:20 PM / IP Logged  
Greetings all! Anyone have any info to share about the outcome/result of reversing the polarity on one side of the vehicle? Or(in my case) just the dash tweeters, Or just the rear speakers(which sit closest to occupants). When switching just the rear, It sounded more defeated back there. When switching just the tweets, the sound seemed to become more "clear, defined, accurate, better"(if you will). When reversing pairs on all right side speakers, the sound became noticeably unbalanced from Left to Right and as assumed, phased out the bass. Furthermore, as a whole, the system is decent but the stock locations are difficult to work with. Ultimately, are there circumstances that warrant changes like these? When running the sub reversed, right away I could tell that it was worse which leaves no question there. If I think its better after one of these changes, is that a possibility technically? Please review and question or comment.    http://picasaweb.google.com/crianketz/08Nissan#
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i am an idiot 
Platinum - Posts: 13,667
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: February 03, 2010 at 7:47 PM / IP Logged  
Changing the phase on soeakers playing different frequencies will sometime result in a different and sometime more desirable sound.  Tweeters out of phase with mids or subs out of phase with midbass drivers etc.  Wiring mids out of phase with other mids will almost always result in diminished sound quality.
ianarian 
Copper - Posts: 516
Copper spacespace
Joined: April 24, 2009
Location: California, United States
Posted: February 06, 2010 at 2:09 AM / IP Logged  
Gotcha, that pretty much adds up. Seems as if no one ever resorts to its use. Im believing it resolved the blaring tweeter issue I had. The dash tweets do wonders for the front stage when set right.
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ianarian 
Copper - Posts: 516
Copper spacespace
Joined: April 24, 2009
Location: California, United States
Posted: February 06, 2010 at 2:10 AM / IP Logged  
Thanks BTW!
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tommy... 
Gold - Posts: 1,901
Gold spacespace
Joined: December 10, 2004
Location: United States
Posted: February 12, 2010 at 8:49 AM / IP Logged  
Your link does not work...?
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DYohn 
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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: February 12, 2010 at 10:04 AM / IP Logged  
Reversing electrical polarity is often necessary to attain proper acoustic phase at the listening position.  If you think you have phase cancellation issues, it's worth trying to see if it helps, especially if the tweeters are pointing up, or if the mids are in kick panels, etc.
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ianarian 
Copper - Posts: 516
Copper spacespace
Joined: April 24, 2009
Location: California, United States
Posted: February 12, 2010 at 12:57 PM / IP Logged  
Try it again Tommy....
Reversing the pair to the tweeters resolved the itch that I been scratching at since day 1. The speaker locations bite. If my wife smells fiberglass again in the next 10 years, I'll be done for....phase, polarity, front to rear, l to r -- posted image. So I made the best of what I got. I'm on the last stage now making my finished product. I documented most results along the way adopted from the OPINIARIAN of rules and standards. No Rocks involved. I tried almost 10 subs in 3 different boxes and 6-7 different pairs of speakers.
This is what I do for FUN!

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