passive xover

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=116186
Printed Date: May 11, 2025 at 6:32 PM

Topic: passive xover

Posted By: dohckiller808
Subject: passive xover
Date Posted: September 08, 2009 at 4:29 AM

if you have a passive crossover that cuts 4.5k to 20k to a 4 ohm load, if i use an 8 ohm tweeter where will the crossover cut off at?

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150SPL musical in a civic coupe

Replies:

Posted By: DYohn
Date Posted: September 08, 2009 at 8:34 AM

Double the impedance = cut the crossover knee in half. So 2.250KHz. And realize that crossovers do not "cut off." The Xover frequency is simply the point where attenuation begins (or the -3db point, depending on the design.)

posted_image

https://www.the12volt.com/caraudio/cross.asp

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Posted By: haemphyst
Date Posted: September 08, 2009 at 9:04 AM

dohckiller808... I am also interested in your build, based on your sigline...

Care to post your system info?

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

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