Question 1

How do I calculate speakers in series?

Accepted Answer

Add the impedance values together: R_total = R1 + R2 + R3 ... Two 8Ω speakers in series give a 16Ω load. Series wiring raises impedance and is safe for any amp rated for that value or lower.

Question 2

How do I calculate speakers in parallel?

Accepted Answer

For parallel, 1/R_total = 1/R1 + 1/R2 + ... Two 8Ω speakers in parallel give a 4Ω load. Identical speakers in parallel can be quickly calculated as R ÷ number of speakers.

Question 3

What happens if I run a 2 ohm load on a 4 ohm amp?

Accepted Answer

The amp will try to deliver roughly twice its rated current, which can overheat the output stage and trip protection or, in the worst case, damage the amp. Always check your amplifier's minimum-impedance spec before wiring.

Question 4

Can I mix 4 ohm and 8 ohm speakers?

Accepted Answer

Yes, but the lower-impedance speaker will draw more current and play louder. In parallel the total is below 4Ω; in series it is 12Ω. This calculator handles mixed values and shows the combined impedance automatically.