4ohm woofer 8 ohm tweeter standard crosov

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=98099
Printed Date: May 05, 2024 at 6:54 AM

Topic: 4ohm woofer 8 ohm tweeter standard crosov

Posted By: nu1995
Subject: 4ohm woofer 8 ohm tweeter standard crosov
Date Posted: October 18, 2007 at 11:43 PM

I have a set or mb quart refreince 6 1/2 components and I don't like the tweeters ( I want silk dome not alu of tita or what ever they are) i found a set of pioneer 2" tweeters that are 8 ohm. what will the effects be or will it matter. power wise 200 watts

Replies:

Posted By: jmelton86
Date Posted: October 19, 2007 at 2:11 AM

The crossovers with the MB Quart set were designed *specifically for the tweeters (and woofers for that matter) that came in the component set. If you were to switch to the Pioneers, the crossover frequencies will be way out of whack.

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

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Posted By: DYohn
Date Posted: October 19, 2007 at 10:17 AM

Using an 8-ohm tweeter in a crossover circuit designed for a 4-ohm tweeter will drop the crossover knee frequency by half. Meaning, if the crossover was designed for 1800 Hz with a 4-ohm tweet, placing an 8-ohm tweet in its place will change the Xover frequency to 900 Hz. This may be very bad for the tweeter - indeed it may damage it - and it will certainly destroy the designed blend between the tweeter and the woofer. Also, most passive crossovers include attenuation and filter circuits to match the sound of the tweeter to the woofer, or to create the quality of sound desired from the tweeter. Changing the tweeter will affect these things as well.

in short, don't do it.

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