8-ohm/ 6-ohm setting in AVR
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Joined: Jul 2008
Posts: 60
old hand
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OP
old hand
Joined: Jul 2008
Posts: 60 |
Another example of clear doco for my yammie rxv-1800. Buried on page 10, it says:
"Check the type of the connected speakers. If the speakers are 6-ohm speakers, set “SPEAKER IMP.” to “6Ω MIN” before using this unit (see page33). You can also use 4-ohm speakers as the front speakers (see page117)."
The choices are "8-ohm min" or "6-ohm min"
Given that the M60s and the VP100 are 8-ohm, and the QS-8 surrounds are 6-ohm, what should I set it to? (I currently have it at 6).
What difference does it make?
Thanks and regards, David
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Re: 8-ohm/ 6-ohm setting in AVR
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
Set it to 8 ohm and everything will be fine.
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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Re: 8-ohm/ 6-ohm setting in AVR
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
David, this one comes up rather frequently, and it's primarily due to what I view as an overly cautious approach to lower impedances by both amplifier and speaker manufacturers. Setting the lower impedance setting in no way "optimizes" the amplifier for a lower speaker impedance, as some imagine and the manuals seem to imply. All this does is to to limit the maximum voltage that the power supply section of the receiver can output, and because of Ohm's Law(e.g., I=E/R, P=E[squared]/R), when the voltage is limited so is the current and the resulting maximum power capability. This helps prevent overheating and keeps the UL(Underwriters Laboratory)happy, but it can reduce maximum power output by about half, as Sound&Vision tests frequently show.
Disregard the language in the manual and leave the setting at 8ohms regardless of the impedance rating of the attached speakers.
-----------------------------------
Enjoy the music, not the equipment.
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Re: 8-ohm/ 6-ohm setting in AVR
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
Dave, this may explain your other post. Leave it on 8 ohms, even if you have 4ohm speakers.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: 8-ohm/ 6-ohm setting in AVR
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Joined: Jul 2008
Posts: 60
old hand
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OP
old hand
Joined: Jul 2008
Posts: 60 |
Right. Thanks, all. Regards, David PS I actually just changed it to 6, so probably doesn't explain other posts
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