I am needing some assistance with figuring out my speaker configuration and the correct ohms to aim for. I've read several posts but I am still not confident that I understand it.
I have 6 speakers. All 4 ohms. I want 4 on the corners and two on the front wall. This is in a shop so looks/quality doesn’t really matter - I just won't to ruin the speakers or the amp. All of what I have is cheap reused stuff but I still don't want to unnecessarily blow anything.
My amp is the Pyle PTA2 Mini 2x40W (bought on Amazon)
From the documentation:
The speaker impedance can be ranged from four to eight Ohms for the general stereo output. The total speaker impedance must be at least four Ohm per channel
I am using the 4-Way Stereo Speaker Selector from Radio Shack.
I would like to be able to choose any combination of the three sets of speakers:
From the speaker selector documentation:
The chart shows the impedance for all possible combinations of 8-ohm speakers.
Speaker Sets On Impedance
A, B, C or D 8
A + B 16
A + C 4
A + D 4
B + C 4
B + D 4
C + D 16
A + B + C 5.3
A + B + D 5.3
A + C + D 5.3
B + C + D 5.3
This chart is what has me thrown off. I didn't know if I could just halve the impedance from the chart or not since it's for 8 ohm speakers.
What would be the recommend setup given the items I have?
4ohm + 4ohm in parallel is approximately 2ohms and will blow your amplifier.
I'd suggest you consider a better speaker switch....on with impedance protection which limits the load seen by your amplifier to 4ohms or more.