what ohm load would this produce?

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Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=114305
Printed Date: July 09, 2025 at 7:49 PM

Topic: what ohm load would this produce?

Posted By: jerad73
Subject: what ohm load would this produce?
Date Posted: June 07, 2009 at 8:11 PM

4 subs, 4ohm single voice coil.

all 4 positive wires are connected to the positive terminal on the cup

all 4 negative wires are connected to the negative terminal on the cup.

would this make a 1ohm or 4 ohm load?

Replies:

Posted By: i am an idiot
Date Posted: June 07, 2009 at 8:17 PM

Four 4 ohm Single Voice Coil (SVC) Speakers

Option 1 (parallel) = 1 ohm load
Speakers wired in parallel
Recommended Amplifier: Stable at 1 ohm mono

Option 2 (series/parallel) = 4 ohm load
Two pair of speakers, each pair wired in series, then wired in parallel
Recommended Amplifier: Stable at 4, 2, or 1 ohm mono

Posted By: ben_c_8
Date Posted: June 08, 2009 at 1:52 PM

yes the loads add together, two single 4 ohm would be 2 ohm...3 will be an off number, and four will be one.

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Ben carnes-2ma hk15x2 + 5500d

Posted By: haemphyst
Date Posted: June 08, 2009 at 3:36 PM

ben_c_8 wrote:

...3 will be an off number...

It's a technical term... VERY industry specific.

ben_c_8, they don't add together, except in series. He is asking about parallel. "Impedance of each voice coil divided by the number of voice coils". That's not additive.

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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: June 08, 2009 at 4:44 PM

The "off number" would be 1.33

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

https://www.the12volt.com/caraudio/boxcalcs.asp Scroll down a bit and there are a series and a parallel calculator.

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