Quote:
Originally Posted by 370ZBLACK09
What is the difference between 2,4,and 8 ohms? And which one should i choose if I going to use the Rainbow Ipaul Dm2000?
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The lower the number of Ohms, the more difficult it is for an amplifier to drive the load.
Most all car audio speakers are 4 ohm therefore all car audio amplifiers are rated to drive 4 ohm speaker. Any good car audio amplifier will drive a 2 ohm load without breaking a sweat.
Most home audio speakers are 8 ohm (higher resistance)
In car audio speakers, specifically subwoofers, come in different ohms ratings for getting the most out of your amplifier.
Lets say your amplifer has a rating of 250watts RMS X 1 @ 4ohms and 500watts RMS X1 @ 2 ohms.
If have a subwoofer that is 2 Ohms you can harness that extra 250 watts that would otherwise not be produced if you are using a 4 ohm driver.
Now lets say you have (2) identical 4 ohm subwoofers, you can wire them parallel (+ to + and - to - ) together and the two subwoofers wired in this configuration will create a 2 ohm load.
Remember that your amplifier will work twice as hard to drive a 2 ohm load so make sure it can handle this rating and that it gets proper cooling to disapate the extra heat.