impedence
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=51585
Printed Date: May 10, 2024 at 4:54 PM
Topic: impedence
Posted By: Izzum88
Subject: impedence
Date Posted: March 08, 2005 at 9:44 PM
It will sound like a dumb question to you guys but how do you know how many ohms your amp is running on ? I understand connecting speakers in a series or paralell but then how do get the amp to that amount of ohms
Replies:
Posted By: Jay22
Date Posted: March 08, 2005 at 9:56 PM
okay do you take lets say two 4 ohm subs and run them parralel the two pos. together and the two neg together then to the amp to acheive a 2 ohm load.....If your amp is 2 ohm stable it will run that. the amp just knows kinda...cant think of how to say it lol......if you were to take a ohm-meter to the pos and neg of the sub wires you should get 2 ohms
Hope this helps ya out
Jay
Posted By: Poormanq45
Date Posted: March 08, 2005 at 10:35 PM
The Ohm load is not always the same. It changes as the frequency changes. The rating that the manufature gives you is a nominal(average) rating.
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Posted By: oonikfraleyoo
Date Posted: March 08, 2005 at 11:06 PM
Ohms is a measure of resitstance. In very layman's terms, its the resistance your speaker put on your amp. The amp doesn't put out resistance. ------------- Nik
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Posted By: stevdart
Date Posted: March 09, 2005 at 12:36 AM
To fully understand why you don't have to set the amp to the ohm load of the speakers, you have to know the basics of how electricity works. It's described by the late great Mr. Ohm in what we know as Ohm's Law. A law is not the same thing as a theory. It is fact, absolute and official, and cannot be denied. A good and easy read to learn the correlation between voltage, resistance, current and power can be found at BCAE1.com.
Posted By: Poormanq45
Date Posted: March 09, 2005 at 12:43 AM
Resistance is the opposition to the flow of direct current. Impedence is the opposition to the flow of alternating current.
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Posted By: Izzum88
Date Posted: March 09, 2005 at 9:59 AM
What about running your amp at 1 ohm, if you have a 1 ohm stable amp?
Posted By: DYohn
Date Posted: March 09, 2005 at 10:12 AM
Izzum88 wrote:
What about running your amp at 1 ohm, if you have a 1 ohm stable amp?
It would work just fine. What's your real question, how to create a 1-ohm load? That is determined by your speakers and has nothing to do with the amp. Choose your speakers and then choose an amp to power them, or choose your amp and then design your speaker system to match the amp's capabilities. ------------- Support the12volt.com
Posted By: Master Asylum
Date Posted: March 09, 2005 at 10:44 AM
This is my own opinion, but it seems like people gave more definitions than any real answer... :/ I think what he was wondering is how the amp "knows" what impedance to run off basically. I don't know well enough how to answer but it just seemed like there wasn't much of an answer.
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1998 Monte Carlo w/
Eclipse CD8454
2xRockford 5.25" Power 2-way T152C
2xRockford 6"x9" Punch 3-way FRC4369
1xMemphis 16-MCH1300 5-channel
2xKicker 12" L5 Solobaric-2 Ohm
Posted By: DYohn
Date Posted: March 09, 2005 at 10:48 AM
An amp does not "know" anything. It will deliver as much voltage and current as it can into whatever load is connected to it. That is the only answer possible. The user creates the ohm loads by wiring the speakers. The amp doesn't care. It will do its thing regardless (until it fries, blows a fuse, or blows your speakers. Then the system simply stops working.) ------------- Support the12volt.com
Posted By: Master Asylum
Date Posted: March 09, 2005 at 11:03 AM
Ok, that seems like more of an answer. Thank you. (Referring to knows from earlier post by jay22)
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1998 Monte Carlo w/
Eclipse CD8454
2xRockford 5.25" Power 2-way T152C
2xRockford 6"x9" Punch 3-way FRC4369
1xMemphis 16-MCH1300 5-channel
2xKicker 12" L5 Solobaric-2 Ohm
Posted By: Izzum88
Date Posted: March 09, 2005 at 1:27 PM
Thanks thats exactly what i meant to ask, you guys cleared upalot of questions for me
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