Considering an outdoor system running 2 speakers on each channel. What problems will it cause the amplifier (Rotel 75wpc)? Speakers specs: Sensitivity 92 dB Impedence 6 Ohms
Paralleling the two speakers will, I believe, half the impedence, so the amp will be seeing 3 ohms nominal and dips could bring it much lower. Look at the impedence curves, but this might put a real strain on the amp.
It will be a 3ohm load which is fine if played at low volume. But keep in mind it takes more volume for outdoor speakers due to the lack of boundaries. A speaker selector would let you turn off the speakers not being used and protect the amp.
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