1st order filter parallel wiring

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=127427
Printed Date: July 13, 2025 at 9:38 AM

Topic: 1st order filter parallel wiring

Posted By: johnx818
Subject: 1st order filter parallel wiring
Date Posted: May 22, 2011 at 8:53 PM

Hello all.

I'm trying to get up to about 165mf for each speaker (4ohm) by using two capacitors in parallel but I'm not sure how to wire it. Can someone please help me or let me know if it's even possible to do that because I can't find a wiring diagram on the net that shows two capacitors in parallel to a speaker.

Also, if it helps, the speakers are being powered by the headunit, not an amp.

Replies:

Posted By: haemphyst
Date Posted: May 22, 2011 at 10:37 PM

Two 80uF caps in parallel will give you about 160uF, which will be close enough.

Head unit, headphone amp, high-power amplifier... Makes no difference.

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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."

Posted By: i am an idiot
Date Posted: May 23, 2011 at 2:18 AM

Are you using Non-Polarized capacitors?

Posted By: johnx818
Date Posted: May 23, 2011 at 4:25 AM

haemphyst wrote:

Two 80uF caps in parallel will give you about 160uF, which will be close enough.

Head unit, headphone amp, high-power amplifier... Makes no difference.

But how will I wire those two 80uf caps? Do I tap in another wire to the existing speaker wire so that it turns into two wires and add the cap there?

And I will be using non-polarized caps.

Posted By: haemphyst
Date Posted: May 23, 2011 at 9:13 AM

As long as they do this electrically, you can connect those caps wherever you'd like.

posted_image

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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."

Posted By: johnx818
Date Posted: May 23, 2011 at 8:04 PM

Thank you very much to all for responding and the diagram haemphyst!

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