What ohms does 3, 8 ohm speakers connected make?
Register to hide this ad
I LIKE MUSIC
Super Member
8 divided by 3 for identical speakers.
About 2.7 Ohms. Remember that the impedance of a speaker will vary with frequency of the musical notes and in the real world a speaker rated at 8 Ohms may appear to the amplifier as something less, just for example 6 Ohms at certain musical note frequencies (for identical speakers that would result in 2 Ohms) and not all speakers rated will behave the same.
At certain musical note frequencies the impedance of a speaker may be higher than its rated impedance. We tend not to worry about this, because as a general rule (there are exceptions) it is the lower impedance numbers that are hard on amplifiers.
So the simple answer is about 2.7 Ohms, but it is not always that simple.
About 2.7 Ohms. Remember that the impedance of a speaker will vary with frequency of the musical notes and in the real world a speaker rated at 8 Ohms may appear to the amplifier as something less, just for example 6 Ohms at certain musical note frequencies (for identical speakers that would result in 2 Ohms) and not all speakers rated will behave the same.
At certain musical note frequencies the impedance of a speaker may be higher than its rated impedance. We tend not to worry about this, because as a general rule (there are exceptions) it is the lower impedance numbers that are hard on amplifiers.
So the simple answer is about 2.7 Ohms, but it is not always that simple.
the skipper
Professional Curmudgeon
Here's a handy tool that comes in handy for figuring out impedance of parallel speakers.
http://www.sadowsky.com/audio/impedance.html
http://www.sadowsky.com/audio/impedance.html
1/Rt = 1/R1 + 1/R2 +1/R3 + etc
century tek
Addicted Member
Were you just generally curious or were you going to use these speakers with something?
Cody AOC
Active Member
Just curious
twiiii
Lunatic Member
Two low for most direct couple amplifiers and recievers, $ ohms is bad enough. . There were a couple of Mcintosh Recievers and integrated amps with out autoformers that could handle that load back in the 70's. Today Mcintosh uses autoformers to drive 2 ohms and a bit below. Mono blocks with 2 ohm taps can handle the job with ease, as can their integrated and 1 current receiver. As long as you don't ask for more than a few watts of power you will be OK, but anything more can cause premature failure of the electronics and clipping, damaging your speakers.
Similar threads
