subs, using 4 and 8 ohm together?

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=108496
Printed Date: May 12, 2025 at 2:38 AM

Topic: subs, using 4 and 8 ohm together?

Posted By: jjfne
Subject: subs, using 4 and 8 ohm together?
Date Posted: October 28, 2008 at 6:55 PM

what do you think about using a 4 ohm sub and a 8 ohm together, someone gave me the 8ohm, didnt know if it would be worth hooking it up

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Jon

Replies:

Posted By: stevdart
Date Posted: October 28, 2008 at 7:47 PM

It depends on what amplifier you are hooking them up to. In parallel, they would make an impedance of 2.67 ohms. Of course, you could use two amps...but I wouldn't guess that someone gave you an amp as well.

The impedance of a speaker determines the power it gets. If, for example, a mono amp (capable of a 2 ohm load) is powering the pair, the 4 ohm speaker would get twice the power as the 8 ohm.

If you're thinking that it might make an improvement to your sound system, shelve the idea altogether.

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Posted By: jjfne
Date Posted: October 28, 2008 at 8:20 PM

has several amps, but using my 500/1 one a jl audio w1 4 ohm, was givin a 12 w1 8 ohm, that amp should be fine, just checking to see what people thought

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Jon

Posted By: DYohn
Date Posted: October 29, 2008 at 11:39 PM

bad idea.

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