![](/boards/images/icons/default/book.gif) Re: enough power
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Joined: Feb 2009
Posts: 7
regular
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OP
regular
Joined: Feb 2009
Posts: 7 |
the yamaha can handle the 4 ohm load. you can change the settings on it for the 4,6 or 8ohms speakers. the orbs are set up in the mod 2 configuration which means there are 2 speakers wired together for each side which make them a 4ohms load also.i have been fooling around with all the adjustments for awhile and the orb guys have been great but i just feel im missing something and it could be because i had cerwin vegas for the last 16 years or so. and even though they arent close to to the quality sound im getting from the orbs i guess im used to getting that big sound punch.i have fooled around with the crossover settings, the bass on the sub along with the bass and treble on the receiver. maybe its just me but im looking for what i had but just a lot cleaner sound thus the search for towers
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![](/boards/images/icons/default/book.gif) Re: enough power
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
How do you have the impedance switch set? No matter the rating of the speaker it should be set to 8 ohm. I do recall Mikey (MDrew) had a 661 I believe and he was able to shut it down at higher dbs. That's why I said the Yammy might shut down on some headbanging.
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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![](/boards/images/icons/default/book.gif) Re: enough power
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Joined: Jan 2004
Posts: 13,843 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,843 Likes: 13 |
jg, as Rick mentioned, you don't want to screw with the 4-8ohm switch on the receiver, LEAVE IT ON 8ohms, all your doing is limiting the voltage and power of your receiver.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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![](/boards/images/icons/default/book.gif) Re: enough power
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Joined: Feb 2009
Posts: 7
regular
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OP
regular
Joined: Feb 2009
Posts: 7 |
i havent touched the setting as that what i was told my yamaha when i called to double check but its available to use under certain circumstances which im sure ill never get into but it is a capable of handling the 4 ohm load with no problem
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![](/boards/images/icons/default/book.gif) Re: enough power
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Joined: Jan 2004
Posts: 13,843 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,843 Likes: 13 |
yep, and if your using 4ohm speakers, you still leave the switch to 8ohm.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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![](/boards/images/icons/default/book.gif) Re: enough power
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Joined: Feb 2008
Posts: 1,898
connoisseur
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connoisseur
Joined: Feb 2008
Posts: 1,898 |
JG, In case the comments about going against the grain with the switch setting are confusing, here is a good explanation of why everyone is recommending that you not change the switch from the 8-ohm setting. NOTE: Some Receivers have an impedance selector switch. DON'T USE THEM! The manufacturer puts them there for UL approvals as well as easing consumer concerns about driving low impedance loads. These switches step down voltage feed to the power sections which will limit dynamics and overall fidelity. Keep the switch set for 8 ohms regardless of the impedance of your speakers and ensure proper ventilation of the Receiver. While it seems counterintuitive, it is in fact good advice. ![smile \:\)](/boards/images/graemlins/default/smile.gif) Jason
Epic 80-800: HG Cherry
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![](/boards/images/icons/default/book.gif) Re: enough power
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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 |
Yeah, John; since the Mod 2 Orbs are formed by using two Mod 1s in parallel, the resulting impedance is about 4 ohms and is similar to the M80s in that respect. As was pointed out, the 8 ohm receiver setting is still the appropriate one, not the lower setting which reduces voltage and in turn reduces current and power to help prevent overheating.
The Orbs are very small and do distort at higher sound levels(even if a 150Hz crossover is used)which the M80s can handle cleanly.
-----------------------------------
Enjoy the music, not the equipment.
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![](/boards/images/icons/default/book.gif) Re: enough power
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Joined: Jul 2005
Posts: 738
aficionado
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aficionado
Joined: Jul 2005
Posts: 738 |
JG, In case the comments about going against the grain with the switch setting are confusing, here is a good explanation of why everyone is recommending that you not change the switch from the 8-ohm setting. NOTE: Some Receivers have an impedance selector switch. DON'T USE THEM! The manufacturer puts them there for UL approvals as well as easing consumer concerns about driving low impedance loads. These switches step down voltage feed to the power sections which will limit dynamics and overall fidelity. Keep the switch set for 8 ohms regardless of the impedance of your speakers and ensure proper ventilation of the Receiver. While it seems counterintuitive, it is in fact good advice. ![smile \:\)](/boards/images/graemlins/default/smile.gif) Jason So I have a separate power amp that has a 4 / 8 ohm switch. Should I keep the switch set to 8 ohm here too for my M80's, or is this just for receivers? I believe the manual says to select 4 ohm for a 4 ohm speaker. Thoughts? paul
paul
Axiom M80, VP180, Qs8, EP500 Epson 3020 Rotel RB-880 Denon AVR-990
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![](/boards/images/icons/default/book.gif) Re: enough power
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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 |
Paul, exactly the same facts apply: this lower setting in no way "optimizes" the amplifier for handling the speakers with a lower impedance rating, as some imagine. This is purely a safety-related measure intended to limit the possibility of overheating, pursuant to UL requirements. It does this by limiting the voltage which is available on the power supply "rails", and following Ohm's Law, when the voltage is reduced so is the current and power. This of course reduces the possibility of overheating, but does so at the expense of maximum performance. Some lab tests(e.g., Sound&Vision)usually include the result of using the lower impedance setting and have found that it cuts the maximum power capability roughly in half.
-----------------------------------
Enjoy the music, not the equipment.
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![](/boards/images/icons/default/book.gif) Re: enough power
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Joined: Jul 2005
Posts: 738
aficionado
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aficionado
Joined: Jul 2005
Posts: 738 |
Wow, thanks John, that is good to know. I will make the changes right away.
paul
paul
Axiom M80, VP180, Qs8, EP500 Epson 3020 Rotel RB-880 Denon AVR-990
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