Re: how has onkyo 609 and M80?
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
Joined: May 2003
Posts: 18,044 |
Well, I've run a mix of M80s (4 ohms), QS8s/4s (ie 6 and 8 ohms) and a VP100 (8 ohms) on a midrange Harman/Kardon for 10 years or so without it melting.
Also, I've read LOT of these questions and answers. If'n you don't want advice from random people, don't ask...
I am the Doctor, and THIS... is my SPOON!
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Re: how has onkyo 609 and M80?
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Joined: Mar 2012
Posts: 8
regular
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regular
Joined: Mar 2012
Posts: 8 |
So ... something could go wrong? Would make sense not to do it then, wouldn't it? It's not an inexpensive piece of equipment to replace. You say there are people here who used the M80's mixed with 8 ohm speakers ... with the high end Onkyo?
Last edited by NikonShooter; 03/22/12 03:37 PM.
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Re: how has onkyo 609 and M80?
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Joined: Mar 2012
Posts: 8
regular
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regular
Joined: Mar 2012
Posts: 8 |
Actually, I wasn't asking for advice ... I was giving it ... to the original poster. Also, an Onkyo is not a Harmon Kardon.
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Re: how has onkyo 609 and M80?
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
Something can always go wrong no matter the brand. The receiver, any receiver, has no clue what ohm the speakers are. It is the resistance to the load of the receiver, the lower the ohm rating the less resistance.
If I were to spend that kind of money on a unit and it couldn't run a 4 ohm load I'd return it for a refund.
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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Re: how has onkyo 609 and M80?
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Joined: Mar 2012
Posts: 8
regular
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regular
Joined: Mar 2012
Posts: 8 |
I understand that something can go wrong. No one's making a receiver today and calling it the Titanic after all. However, if the manual ... and a representative from the company ... suggests not doing it, it would make since not to, don't you think? Or, is it "Damn the ice, we're unsinkable! Full speed ahead!" And, the Onkyo definitely can run a 4 ohm load ... just not mixed with 8 ohms.
Last edited by NikonShooter; 03/22/12 03:55 PM.
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Re: how has onkyo 609 and M80?
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Joined: Sep 2008
Posts: 4,116
connoisseur
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connoisseur
Joined: Sep 2008
Posts: 4,116 |
I understand that something can go wrong. No one's making a receiver today and calling it the Titanic after all. However, if the manual ... and a representative from the company ... suggests not doing it, it would make since not to, don't you think? Or, is it "Damn the ice, we're unsinkable! Full speed ahead!" An the Onkyo definitely can run a 4 ohm load ... just not mixed with 8 ohms. Hi NikonShooter, Please take the time to read this article. It will answer all your questions in great detail! http://www.audioholics.com/education/amplifier-technology/impedance-selector-switch-1Cheers!
I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.
-Max Payne
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Re: how has onkyo 609 and M80?
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Joined: Aug 2009
Posts: 6,015
axiomite
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axiomite
Joined: Aug 2009
Posts: 6,015 |
People do it all the time. Most of the receivers can handle it. If not, they'll just shut down temporarily. Usually no harm done. I'm not running a 4 ohm load, but I am running 2 sets of 8 ohm for L and R and C channels in parallel with a Pioneer Elite model.
If the receivers couldn't run the 4 and 8 ohm loads at the same time, then they couldn't run the M80s and QS8 surrounds at the same time.
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Re: how has onkyo 609 and M80?
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Joined: Mar 2012
Posts: 8
regular
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regular
Joined: Mar 2012
Posts: 8 |
Thanks for the link, BlueJays1. Interesting article. Even more interesting comments there. And, an interesting See Also: article ... the first one. The articles are definitely not addressing the situation I described though.
Last edited by NikonShooter; 03/22/12 04:14 PM.
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Re: how has onkyo 609 and M80?
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
Joined: May 2003
Posts: 18,044 |
Nikon, I understand you're not inclined to listen to what you perceive as non-experts on the internet, but understand that impedance curves are just that--curves. So at any given time, two speakers on different channels, even if they have the same nominal impedance of say 8 ohms may well be presenting a different impedance to the amplifiers in the receiver. Note "amplifiers" plural.
I would wager that very few people have 4 ohm speakers on all 5/7/9/11 channels. And I have never once heard of a receiver or speakers being damaged by mixing impedance. Many people whose knowledge on the subject I respect (including Axiom employees) have said categorically that there is no problem. If you're not comfortable with what you're hearing from Onkyo, return it. Or buy M80s for all channels. Or M60s instead of M80s.
I am the Doctor, and THIS... is my SPOON!
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Re: how has onkyo 609 and M80?
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
I ran 8 and 6 ohm speakers with an Onkyo 707 until I got the VP160.
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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