Bass blockers on an amplified system

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=61114
Printed Date: May 13, 2025 at 8:14 AM

Topic: Bass blockers on an amplified system

Posted By: bigmikeww
Subject: Bass blockers on an amplified system
Date Posted: August 10, 2005 at 9:18 PM

I got a pioneer 2 ch amp running 2 ohm stereo. getting a little to much bass for me. i have a couple of 22uF 100v crossover capacitors. if i put these on the positive side of each speaker will it cut off more bass? or should i put one per pair? and suggestions or comments would be appreciated
mike

Replies:

Posted By: bigmikeww
Date Posted: August 10, 2005 at 9:23 PM

forgot to let you know that is amp is running my mids and highs.

Posted By: DYohn
Date Posted: August 10, 2005 at 10:32 PM

If the amp has a built-in high-pass filter that will be more efficient than using bass blockers. 22 microfarads on 4-ohm speakers will do a lot more than block bass, that would create a 6db/octave high-pass filter at about 1800Hz. WAY too high, and at 2 ohms it'd be in the upper midrange at around 3600Hz! You want to cut frequencies below about 100Hz. To do that with a capacitor ar 2 ohms will require 800 microfarads!!!

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Posted By: bigmikeww
Date Posted: August 10, 2005 at 10:55 PM

in the amp theres only a low pass filter. when i ordered the filters they were recomended for 3.5, 4, 4x6?

Posted By: DYohn
Date Posted: August 10, 2005 at 11:42 PM

You could try an F-Mod filter if you want, or an electronic crossover. I'd recoment that before using "bass blocker" capacitors.

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