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settle bet passive crossover?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=112266
Printed Date: May 29, 2024 at 3:33 AM


Topic: settle bet passive crossover?

Posted By: Flatlandfreak
Subject: settle bet passive crossover?
Date Posted: March 11, 2009 at 9:49 AM

Ok, so me and my boss are having a small argument about passive crossovers and I would like to prove my point.

So I have a simple question.  When using a non-polorized capacitor as a simple passive crossover (bass blocker if you will) on a standard 4-ohm speaker.  Does it make any difference whether the capacitor is placed in series with the positive (+) or negative (-) lead of the speaker?

Please only people who know for certain please answer.  I'm looking for the "expert" opinion here.

Thanks! :)



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I Like Peanut Butter!



Replies:

Posted By: i am an idiot
Date Posted: March 11, 2009 at 1:00 PM

It does not matter.  Actually on a 2 channel bridgeable amplifier, there is signal on left positive and right negative wires.  So the cap on the right positive wire is actually on the ground wire.  The signal is on the  negative wire.  If your boss does not believe this, remove all speaker wires from the amp and using a meter check the resistance between the left negative and the right positive wire.  It will be 0 ohms. 

Above is assuming that the bridge wires of the amp are the left positive and the right negative.





Posted By: lspker
Date Posted: March 11, 2009 at 9:47 PM
As long as your consistant both will work.  It won't change the crossover point, but it can affect time alignment and off axis response, this is why it's nomally on the + side (hesitate to say posative because it is an ac signal) or you could go nuts and split the different and put half on each lead.





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