Different impedances on A/ B connections


Standard Member
I made the mistake of forgetting to consider impedance when I bought some "B" speakers for my kitchen this weekend. I have Kef eggs in the lounge (8 ohm) on the "A" speaker connection and now some small Mordaunt Short 302s (4 ohm) in the kitchen on the "B" connection.

I have set my amp's impedance switch to 4ohms but the combined impedance is 1/ (1/8 + 1/4) = 2.7ohms.

Am I in dangerous territory here? Should I return the Mordaunt Shorts or will I be OK at medium volume levels (about -45dB on my Yamaha)?

Any advice/ experience appreciated.


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