Les
Well-Known Member
Hey guys. Got a bit of an out of the ordinary question for ya.
I have a small 20w PA amplifier that I am wanting to connect four loudspeakers to. The speakers are each 8 ohm, unknown wattage. They're not 70 volt, but otherwise they're basically a typical PA paging horn (but a little on the small side with a 6" bell).
The amp has several outputs on the back: COM, 4 ohm, 8 ohm, 16 ohm, 70v. (one speaker lead goes to COM while the other goes to the corresponding impedance). The problem is that all four speakers connected in parallel equal out to be 2 ohms if my calculations are correct. I have heard that improper impedance matching can damage an amp and/or speakers. Think I'll have an issue here? Is there a way I could wire them in series to get them to match up?
The amp is old but usable. It's a Realistic MPA-25 solid state amp. An oldie for sure, but just being used for basic warehouse paging.
I have a small 20w PA amplifier that I am wanting to connect four loudspeakers to. The speakers are each 8 ohm, unknown wattage. They're not 70 volt, but otherwise they're basically a typical PA paging horn (but a little on the small side with a 6" bell).
The amp has several outputs on the back: COM, 4 ohm, 8 ohm, 16 ohm, 70v. (one speaker lead goes to COM while the other goes to the corresponding impedance). The problem is that all four speakers connected in parallel equal out to be 2 ohms if my calculations are correct. I have heard that improper impedance matching can damage an amp and/or speakers. Think I'll have an issue here? Is there a way I could wire them in series to get them to match up?
The amp is old but usable. It's a Realistic MPA-25 solid state amp. An oldie for sure, but just being used for basic warehouse paging.
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