ohms

[siddyboo 10+ year member]

Hello

I was wondering if somebody could explain to me ohms

what they do and what does it mean when you see that an amp runs so and so watts rms at 2 ohms or 4ohms ????

I am a newb and i am completely confused

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[Untouchable11 10+ year member]

http://www.bcae1.com/ I think that about 12 or 13 down on the right hand side, they explain ohms and everything.....

 

[sumone 10+ year member]

yea bcae1.com is what you need; but in short, an Ohm is the unit of measure of resistance...or the resistivity to the flow of electrons in a circuit. Ohm's law, which you will also learn about, says that voltage equals the amount of current times the amount of resistance. Lastly, power (watts) is defined as voltage times current. So you can see that the more resistance there is, the less amount of current there is (if voltage was steady). And less current means less power.

Speakers & subs present a "load" to an amp...which is measured in Ohms. The more Ohms there are, the less amount power the amp can produce. A lower amount of Ohms means more power. You will see the word impedance. For now, just think that impedance = resistance, and when you've felt you've learned enough about the whole ordeal, allow yourself to understand the difference between impedance & resistance.

 

[JimJ 5,000+ posts]

Impedance is related to resistance, and found in AC circuits where you have oscillating current (like the mains power in your home, an audio signal, a modulated radio signal, etc, etc...) For audio purposes, a lower impedance is more directly related to resistance as a lower ohm load will usually allow more power to flow in the circuit. It gets hairy at higher frequencies, but that's a story for another day //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[JL_W6_v1 10+ year member]

resistance //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

lower the ohm load = more power

higher the ohm load = less power

VIVA LA BAM!!!