speaker ohms?

TX-NR809. Need to know min ohms per channel and if can mix 4-6-8 ohms among channels ?? Sounds dumb ,but curious about this problem.Thanks --serferdude.

On the TX-NR 809; when selecting the 4 ohm speaker impedance option- you can only use speakers rating in impedance of 4 ohms accross ALL speaker channels (as this setting will handle less than 6 ohms but up to 4 ohms). Selecting the 6 ohm impedance will allow speakers rated at least 6 to 16 ohms to be used on the receiver. Using 4 and 8 ohms on the receiver will cause a imbalance on the speaker channels and cause damage. Also trying to use 4 and 6 ohm rated speakers on this receiver can possibly lead to further damage to the receiver as well; thus it is NOT recommended. We recommend using ALL 4 ohm rated speakers when selecting 4 ohm speaker impedance under the SETUP>SPEAKER SETUP> SPEAKER SETTINGS submenu.

If you have any more questions or concerns, Please contact our Product Support Dept for further assistance with this specific issue via our phone number and hours of operation (800-229-1687; option #3 PRODUCT SUPPORT 24 hours a day). We would like to speak with you and work to troubleshoot and resolve your issue as prompt as possible.

Thank You;

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From the manual of 818:

You can connect speakers with an impedance of between 4 and 16 ohms. If the impedance of any of the connected speakers is 4 ohms or more, but less than 6 ohms, be sure to set the minimum speaker impedance to 4ohms” (➔ page 59). If you use speakers with a lower impedance, and use the amplifier at high volume levels for a long period of time, the built-in protection circuit may be activated.

OnkyoUK, sorry, your answer is full of misinformation.

That is exactly what was previously mentioned; if using 4 ohm speakers all around- select 4 ohms speaker impedance under SETUP>SPEAKER SETUP> SPEAKER SETTINGS. If using 6 ohms or higher; select 6 ohms. As also warned; if you attempt to connect 4 and 6 ohm speakers or 4 and 8 ohm speakers; you can damage the unit. Exactly as previously mentioned in layman's terms.

Cordially;

Forum Moderator

You can connect speakers with an impedance of between 4 and 16 ohms. If the impedance of any of the connected speakers is 4 ohms or more, but less than 6 ohms, be sure to set the minimum speaker impedance to 4ohms”.

Any is not all, minimum is not all again. They can be mixed, the setting is only needed as the 4 Ohm speakers draw more current and in 6 Ohm setting the protection circuit could switch off the speakers on high volume levels. You can newer damage the amplifier by connecting higher resistance load that it is designed to! This is misinformation. The unit can be damaged only by connecting the load with less than 4 ohm, newer more, but still there is a short circuit and over-current protection to protect the amplifier from that conditions.

If you will require the location of an authorized service center for the repair of your receiver, please input your zip code/ postal code onto the following weblink to locate an authorized Onkyo service center for warranty repair: http://www.us.onkyo.com/locator.cfm.

Best Regards;

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