Question 6ohm ceiling speaker with 8 ohm

Discussion in 'AV Receivers & Amplifiers' started by tramsden, Apr 8, 2016.

  1. tramsden

    tramsden
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    Hi
    Sorry to be stupid but I've just added 2 MA 280 ceiling speakers to existing MA Apex 10 surround systems to enable Dolby atmos effects. The A10s are 8 ohm, the 280s are 6ohm. Should I change the setting in the Yamaha 1050 from 8 ohm to 6ohm or leave it in its default setting.

    Thank you
    Tony
     
  2. dante01

    dante01
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    Nah, the imoedance ratings are nominal and even so, you should avoid ever setting the impedance switching onboard an AV receiver lower than its default. All it does is reduce the rail voltage and starves the speakers of power. The switching is surplus to requirements and only included in order for the receiver to meet certification requirements in the USA. AV receivers already include inbuilt protection circuitry that causes them to go into standby should they ever get close to temperatures that would be outside of their operational range.

    You can gain more detailed info on this here:
    Setting the A/V Receiver Impedance Selector Switch
     
  3. tramsden

    tramsden
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    Thank you
     

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