It's important to match the impedance of the amplifier to the impedance of your load, in this case the speakers.
When connecting multiple speakers to an amplifier, the total load impedance is calculated by taking the parallel combination of the individual speaker impedances.
In your case, you have three 4-ohm speakers and two 10 inch speakers.
The impedance of the speakers can be calculated using the formula:
- Impedance(Z) = (R1 x R2) / (R1 + R2 + R3)
Since you are connecting two 10 inch speakers in series, the impedance will be added:
- 8 ohm + 8 ohm = 16 ohm
So considering your setup:
- 4 ohm // 4 ohm // 4 ohm // 16 ohm = 1.33 ohm
The total impedance of the speakers connected in parallel is: 1.33 ohms.
Connecting a 2 ohm load to an amplifier rated for a minimum of 2 ohm is unsafe.
This impedance mismatch can cause the amplifier to overheat, draw excessive current and may go into protection mode, or be damaged.
It's important to use the correct amplifier and speakers combination to ensure safe operation and optimal sound quality.