Question about Onkyo TX-SR505 Receiver

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Do all speakers need to have the same impedance? (Protect mode)

I am hooking 6 speakers up to this receiver as follows.

Front: Bose Acoutimass 3 series IV impedance between 4-8 ohms per Bose CS No set impedance
Center: Bose V10: 6 ohms
Rear: three ceiling installed speakers all 8 ohms. (1 KLH, 2 Insignia)

Onkyo manual says it can operate speakers between 6-15 ohms.

Onkyo Customer Support (if that's what you call them), told me all the speaker must have the same impedance? If they are not the receiver will go into protect mode? This does not sound right to me!

Before I send this thing back AGAIN (long boring story) can anyone help?

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  • OblivionSIx Apr 06, 2011

    You should be able to find a relatively cheap universal remote control to work your receiver. I use a "Universal URC-R6" cause my Onkyo remote got smashed. Easy to program and also works my TV, Cable and DVD player.
    http://www.amazon.com/URC-R6-Learning-Re...

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I have old model non HDMI AV Reciver model no TX-SR505 but I lost my remote controller.Now I am presently in India.How will get this type remote contoller

Posted on Apr 06, 2011

  • OblivionSIx Apr 06, 2011

    I use a "Universal URC-R6" for my Onkyo as my remote got smashed. It works great and controls my receiver, TV, cable and DVD player. Much cheaper than a factory model and easy to program!
    http://www.amazon.com/URC-R6-Learning-Re...

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Amplifiers sometimes like to have "balanced loads" on them, and this may be the case with your unit, meaning yes, all the impedances should match.

Judging by the impedance numbers you provided, you should be all set. You really want to avoid having something like 2 ohms on the left side and 8 ohms on the right side - grossly imbalanced. I don't see any problems with what you're going to run.

Posted on Mar 24, 2008

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