To convert an 8-ohm speaker to 4 ohms, all you need is to adjust what type of ohms your speakers have. For example, if your system impedance is 8 ohms made up of a pair of 4-ohm speakers, consider taking out your 4-ohm speakers and implementing 1 4 ohm speaker. Voila! You’ve converted an 8-ohm speaker to 4 ohms.

You can mix 4-ohm and 8-ohm speakers just fine, provided the unit is 4-ohm capable and you don’t wire speakers in parallel or use both A/B speakers.

In a series circuit you will need to calculate the total resistance of the circuit in order to figure out the amperage. This is done by adding up the individual values of each component in series….To calculate the total resistance we use the formula:

1. RT = R1 + R2 + R3.
2. 2 + 2 + 3 = 7 Ohms.
3. R total is 7 Ohms.

1. Ohm’s Law states that V=I*R, where V is voltage, I is current and R is resistance.
2. In a series circuit, the voltage drop across each resistor will be directly proportional to the size of the resistor.
3. In a parallel circuit, the voltage drop across each resistor will be the same as the power source.

Batteries achieve the desired operating voltage by connecting several cells in series; each cell adds its voltage potential to derive at the total terminal voltage. Parallel connection attains higher capacity by adding up the total ampere-hour (Ah).

The Characteristics of a Parallel Circuit

1. Determine the combined ​resistance​, or opposition to the flow of charge, of the parallel resistors. Sum them up as ​1/Rtotal = 1/R1 + 1/R2​ for each resistor.
2. Multiply the current by the total resistance to get the voltage drop, according to ​Ohm’s Law​ ​V = IR​.

Heat from each resistor in a parallel circuit will be calculated as the product of the voltage (the same for each) and current (different and inversely proportional to the resistances.) An ideal battery has enough power so that it can supply the current without any voltage drop.

In a series combination of components in an electric circuit, the same electric charge flows through each component. Hence, since, the electric charge flowing in the series circuit has to remain constant, the electric charge flowing per second in the circuit also has to remain constant.

Alternating current (A.C) is five times more dangerous than Direct current (D.C). The frequency of the alternating current is the main reason for this severe effect on the human body. The frequency of 60 cycles is in an extremely harmful range. At this frequency, even a small voltage of 25 volts can kill a person.