## An speaker impedance must be match or higher than an amplifier manufacturer specification, if you use lower speaker impedance than an amplifier specification, your amplifier may end up damaged or make a fire when you play loud music.

A commercial amplifier can handle between 4 - 16 ohms speaker impedance and maybe lower to 2 ohms for car subwoofer amplifier. but in a question, he asked me how to combine 3 speakers @ 6 ohms load to one amplifier.

The simple solution is to make 3 separate amplifiers and share same input, but it makes the circuit more complicated and uses many electronic components. However, if connect all 3 speakers in series, it will make impedance equal to 18 ohms and it makes an amplifier output drop so much.

So, I use 2 speakers connect in parallel and series to other speakers like an image below

SP 1 and SP 2 impedance drop to 3 ohms because two 6 ohms speakers parallel
When series the two speakers with SP 3, the speaker's impedance equal to 9 ohms and that suitable to a commercial amplifier in the market.

Remember: When you series speakers the impedance increase = SP1  + SP2 + SPn....
When you parallel speakers, the speakers' impedance decrease =

1. Thanks For The Tricks. So two 8 ohms speakers parallel & series the two speakers with 1 4 ohms = 8 ohms total. Am i right. ANS please

2. Can you tell me when are + and - on the speakers? Dont understand it this way. Thanks!

3. Sorry to reply late. the + sign connect to power amplifier output + the - sign connect to power amplifier output - or ground

4. Hi there. I have a desperate question;; I have three speakers that are I need to get between 4-8ohm. But 2 of my speakers are 8ohm and one is 6ohm. How can I wore them to make the threshold of 4-8ohm?

Many thanks

1. you may need to series the speakers with a resistor.

5. How to match 3 speakers of 8 ohm with 8 ohm amplifier

1. parallel two speaker to make a 4 ohms speaker(A)
series 8 ohms speaker with 8 ohms resistor(high watts) (B)
series A and B = 8 ohms