Tweeter Attenuation

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=140785
Printed Date: May 13, 2025 at 8:53 AM

Topic: Tweeter Attenuation

Posted By: mohpro
Subject: Tweeter Attenuation
Date Posted: February 03, 2016 at 12:03 AM

If I am powering a set of components with 125 rms x4 amp, does that mean if i leave the tweeter switch on the crossover at 0 that the tweeter will receive the full 125 watts, if i put the tweeter switch to -3, it will get 62.5 watts, and if i set it to -6, the tweeter will receive 31watts. Is that how it works?

Replies:

Posted By: rs specialist
Date Posted: February 05, 2016 at 1:10 PM

the 0, -3, -6 has nothing to do with the power, it is moving the crossover point 3 dB. It will receive full power no matter what position you have the jumper or switch in.

Posted By: wirewise
Date Posted: February 05, 2016 at 2:08 PM

rs specialist wrote:

the 0, -3, -6 has nothing to do with the power, it is moving the crossover point 3 dB. It will receive full power no matter what position you have the jumper or switch in.

I do not believe this is correct. On ADS passive crossovers (for example) it's an attenuation setting for the tweeter, not a roll-off slope setting. Typically roll-off slopes are 6db, 12db, 18db, etc., and not measured in a negative as would be with attenuation.

What passive crossovers are you using?

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~wirewise~ Verify all wiring with your meter before making any connections!