Voltage (volts) is the force that moves electrons, forcing a current. Voltage can be compared to a tank of water elevated at a certain height (potential). If the tank is placed low (low voltage), water will not flow very quickly (low current). [...]
Understanding what ohms are and how they relate to car audio is most helpful when trying to determine optimal wiring configurations for connecting multiple speakers to an amp. There are some basic electrical engineering formulas I will use on this page. Fortunately they are fairly simple.
Ohm’s law: Current = Voltage / Resistance or I = [...]
Amplifiers
Your amplifier takes the signal from your head unit and makes it large enough to be able to drive your speakers. It is preferable to use separate amps for high and low frequencies but it is not necessary. The problem with using one amp for all frequencies is that you cannot adjust the levels among [...]
This page is intended to explain amplifier power specifications in more detail. I have a BS in Electrical Engineering so I do not know how much of this the average Joe is going to understand. I am also human so there may be mistakes below.
Amplifier power ratings are important [...]
Remote Turn-on Wire
The remote turn on wire goes to the head unit. When the radio is on, it puts out 12 volts that turn the amplifier on. If you are using a factory radio that does not have a remote turn on (or [...]
Amplifiers take the signal from the head unit and makes it large enough to be able to drive your speakers. It is preferable to use separate amps for high and low frequencies but it is not necessary. The problem with using one amp for all frequencies is that you cannot adjust the [...]
