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OHMs whats it about?
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<blockquote data-quote="stones" data-source="post: 1013977" data-attributes="member: 540734"><p>For you noobs who don't know heres an explaination.</p><p></p><p>(In plain english)</p><p></p><p>An <span style="font-size: 10px">OHM</span> is a measure of resistance/impedance for an electronic device. Every electronic device has a given amount of resistance.</p><p></p><p>A rating of zero OHMs is a dead short, take a wrench and bridge the + and - terminals on your cars battery to see a dead short in action, lots of sparks and possible damage to your battery. A dead short is when the electrons in the power wire flow with no resistance/impedance, this is bad because it can damage your power supply (and start a fire). The higher the resistance/impedance the fewer electrons will flow.</p><p></p><p>An <span style="font-size: 10px">electron</span> is what makes up electricity just like water molecules make up water, the speed and volume of the electrons determine the voltage and amperage of the electric current(current = flow of electricity).</p><p></p><p>A <span style="font-size: 10px">power supply </span> is an object that powers that electronic device. Power supplies don't have OHMs, they rely on the ohms of the electronic divice they power to give them the right amount of resistance/impedance. If you connect your power supply to a device with too little resistance/impedance you overload its capacity of the amount of electrons it can handle at a given time. this is why a 1ohm speaker will not work with an amp that is rated to handle a 4ohm load, it simply demands too much current.</p><p></p><p>What is a power supply- anything that provides the source of power in the chain EG- Battery, alternator, amplifier these are the power supplys in your car stereo.</p><p></p><p>In the home- wall outlet, voltage converter in your HT reciever, amplifier in the reciever-those are the power supplies there.</p><p></p><p><span style="font-size: 10px">Resistance/Impedance </span>whats the difference?- depends on the way the electronic device uses the current, speakers are rated in impedance because of the way the voice coil works. All in all its not somthing you need to worry about.</p><p></p><p>Now that you now this you need to learn how to wire up the subs in a such way that they will work within the amplifiers abilities.</p><p></p><p>Thats called <span style="font-size: 10px">series and parallel </span> wiring.</p><p></p><p>This is like plumbing, you set up the pipes for the water to flow in certain ways.</p><p></p><p>If you wire a 2 voicecoils in series you pipe the electrons into one voice coil then out the negative to the other voice coils positive and out its negative before returning to the amps negative terminal. This results in the impedance doubling because the electrons travel through two coils before returning to the negative terminal, if you wire 3 voicecoils in series you triple the impendance, 4 voice coils equal quadruple, see what i mean.</p><p></p><p>If you parallel 2 voicecoils together you split the flow of electrons between each speaker. This make it twice as easy for the electrons flow from the amplifier and in turn halves the impedance (simplified) so 2 eight ohm voicecoils wired in parralel will equal 4ohms, 2 four ohm voice coils equal 2ohms.</p><p></p><p>For diagrams showing exactly where the wires need to go look at these diagrams.</p><p></p><p><a href="http:////vb/showthread.php?t=31984" target="_blank">http://www.caraudio.com/vb/showthread.php?t=31984</a></p></blockquote><p></p>
[QUOTE="stones, post: 1013977, member: 540734"] For you noobs who don't know heres an explaination. (In plain english) An [SIZE=10px]OHM[/SIZE] is a measure of resistance/impedance for an electronic device. Every electronic device has a given amount of resistance. A rating of zero OHMs is a dead short, take a wrench and bridge the + and - terminals on your cars battery to see a dead short in action, lots of sparks and possible damage to your battery. A dead short is when the electrons in the power wire flow with no resistance/impedance, this is bad because it can damage your power supply (and start a fire). The higher the resistance/impedance the fewer electrons will flow. An [SIZE=10px]electron[/SIZE] is what makes up electricity just like water molecules make up water, the speed and volume of the electrons determine the voltage and amperage of the electric current(current = flow of electricity). A [SIZE=10px]power supply [/SIZE] is an object that powers that electronic device. Power supplies don't have OHMs, they rely on the ohms of the electronic divice they power to give them the right amount of resistance/impedance. If you connect your power supply to a device with too little resistance/impedance you overload its capacity of the amount of electrons it can handle at a given time. this is why a 1ohm speaker will not work with an amp that is rated to handle a 4ohm load, it simply demands too much current. What is a power supply- anything that provides the source of power in the chain EG- Battery, alternator, amplifier these are the power supplys in your car stereo. In the home- wall outlet, voltage converter in your HT reciever, amplifier in the reciever-those are the power supplies there. [SIZE=10px]Resistance/Impedance [/SIZE]whats the difference?- depends on the way the electronic device uses the current, speakers are rated in impedance because of the way the voice coil works. All in all its not somthing you need to worry about. Now that you now this you need to learn how to wire up the subs in a such way that they will work within the amplifiers abilities. Thats called [SIZE=10px]series and parallel [/SIZE] wiring. This is like plumbing, you set up the pipes for the water to flow in certain ways. If you wire a 2 voicecoils in series you pipe the electrons into one voice coil then out the negative to the other voice coils positive and out its negative before returning to the amps negative terminal. This results in the impedance doubling because the electrons travel through two coils before returning to the negative terminal, if you wire 3 voicecoils in series you triple the impendance, 4 voice coils equal quadruple, see what i mean. If you parallel 2 voicecoils together you split the flow of electrons between each speaker. This make it twice as easy for the electrons flow from the amplifier and in turn halves the impedance (simplified) so 2 eight ohm voicecoils wired in parralel will equal 4ohms, 2 four ohm voice coils equal 2ohms. For diagrams showing exactly where the wires need to go look at these diagrams. [URL="http:////vb/showthread.php?t=31984"]http://www.caraudio.com/vb/showthread.php?t=31984[/URL] [/QUOTE]
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