8 ohm speaker need, need 4 ohms
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=41906
Printed Date: May 03, 2025 at 4:04 PM
Topic: 8 ohm speaker need, need 4 ohms
Posted By: mgj79
Subject: 8 ohm speaker need, need 4 ohms
Date Posted: October 29, 2004 at 8:59 PM
I have an 8 ohm 150 watt 8" sub. I need to get it down to 4 ohms, so I can drive it with my amp. I know I can parallel it with an 8 ohm resistor, but my question is what wattage should the 8 ohm resistor be? I really appreciate any info you guys can give me. Thanks
Replies:
Posted By: stevdart
Date Posted: October 29, 2004 at 9:14 PM
You don't need to get it down to 4 ohms, because 8 ohms puts less strain on the amp. It's an easy load for an amp to handle. You'll get the same result in output as using a resistor and keep it easier on the amp, too. Keep in mind, what the resistor would do is take half the power and convert it to heat. Not necessary.
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