Please 'Boom' Responsibly As most of you have noticed, the noise ordinances have become much tougher lately. Most of this is due to idiots, yes IDIOTS, who drive through residential areas with their windows down while their system is playing at full power. To make things worse, the music they listen to has all sorts of foul language that's not suitable for small children, (who may be playing outside). There are even a few people, who are even beyond idiot status, that play their systems at full power through residential areas after 10:00 PM (when many people go to bed). I don't believe that this type of behavior is good for the industry. If the fines get too stiff, people will stop buying large systems. If this happens, more people will get out of car audio (who wants a mediocre system). People get interested in things because they're exciting. A deck and four 6.5" speakers are not going to interest many of the younger car audio enthusiasts. If car audio enthusiasts keep annoying more and more people, the fines will keep getting tougher. All of this will only reduce interest in the equipment that fuels the industry. If you want to listen to your system at full volume, get out on the highway where there's little chance of bothering anyone. When you get to a red light, turn it down. If the only thing attractive about you is your 'system', you have some work to do. Bottom line... Think about what you're doing. Think about other people. It's not the end of the world if you have to turn the volume down for a little while. |
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Since this is a site
is supposed to explain car audio... Lets say we have a
100 watt (we'll cover 'watts' soon) amplifier and it can
drive a minimum ohm load of 4 ohms. This means that it
can produce 100 watts into a 4 ohm load and any lower ohm
load will cause the amplifier to fail. To produce 100
watts, the amplifier will have to deliver 5 amps of
current. To produce a current flow of 5 amps into a 4 ohm
load, it will have to develop 20 volts across the load
(the voltage at the speaker terminals at full power will
be 20 volts). Don't let all of these numbers confuse you,
I'll cover all of this extensively later in the site.
Now, the reason for the numbers... If you enter 4 ohms
and 20 volts in the calculator below, you'll see that the
current flow is 5 amps. If you reduce the ohm load to 2
ohms, the current flow will double. Since the max safe
current output is only 5 amps and the lower ohm load
causes more than 5 amps to flow, the amplifier may well
be damaged by the lower ohm load. Use this program to calculate the current flow through a resistor.
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You should remember:
1.The ohm is the unit of measure of a devices opposition to the
flow of electrical current.
If you find a problem
with this page or feel that some part of it needs
clarification, E-mail me.
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