M80's with Yamaha 1800
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Joined: Mar 2009
Posts: 129
veteran
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OP
veteran
Joined: Mar 2009
Posts: 129 |
Hi , thinking of finally taking the plunge for M80's but being as they are 4 ohm's , has anyone one mated them up with a Yamaha 1800 or 1900 model .
I am currently running Image Dynamics car speakers mounted in a cabinet with 2 6.5 woofers and a tweeter which are 4 ohm with no issues. ( guess i am answering my own question):-)
On a side note , i listened to the kef C7's on the weekend and was not impressed for the 800 dollar price range , my current set up blew them away .
XPA-3 VP-180v3 M80v3 Svs PC-12 Plus SVS SSS-2 PS-3 Sharp 60" LED OPPO BDP-93 Anthem MRX500
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Re: M80's with Yamaha 1800
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Joined: Jan 2010
Posts: 142
veteran
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veteran
Joined: Jan 2010
Posts: 142 |
I see that the 1800 is rated for 130W per channel, I have a RXV2700 rated at 140W per channel, the 2700 has an impeadance slector two switch to 4ohm if you need it..not necessary to run M80 with this amp. I shot off an e-mail asking Axiom if the 2700 could run them find and they said there should not be a problem.
I donot see an inpeadnace selector onthe 1800 but I would think that you should be able to run the M80's with that AVR. Just shoot the tech e-mail a note and they will get back to you.
Later Phil
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Re: M80's with Yamaha 1800
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Joined: Jan 2004
Posts: 13,848 Likes: 14
shareholder in the making
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shareholder in the making
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I would not recommend changing the impedance switch to a lower setting, your just limiting the current by doing this...
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: M80's with Yamaha 1800
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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
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Limiting the current actually makes damage to the speakers more likely, to amplify (ha) on Randy's note.
I think I've heard of people using a 1900 with M80s, but don't quote me on that. I use a Harman/Kardon AVR525, which is rated at something like 85WPC into 4 ohms, so you can't just look at the watts RMS value and figure out if it'll be stable with M80s (or any 4 ohm speakers).
I am the Doctor, and THIS... is my SPOON!
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Re: M80's with Yamaha 1800
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
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PT, yes you're answering your own question to a considerable extent by noting that you have no problems now with 4 ohm rated speakers. You should also note that the M80s have slightly higher sensitivity than average and so require less power than many other speakers, and that over a majority of their frequency range they could be rated at 8 ohms.
As to a setting on the receiver for lower impedance, as was said, this should never be used. All it does is limit the voltage(not current)which the power supply section can output with a resulting reduction in current and power capability(Ohm's Law). This helps satisfy UL requirements to help prevent overheating, but tests have shown that it cuts maximum power capability roughly in half.
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Enjoy the music, not the equipment.
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Re: M80's with Yamaha 1800
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Joined: Jan 2004
Posts: 13,848 Likes: 14
shareholder in the making
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shareholder in the making
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Posts: 13,848 Likes: 14 |
so lowering the voltage, results in a reduction of current, so I was right.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: M80's with Yamaha 1800
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Joined: Nov 2008
Posts: 1,789
connoisseur
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connoisseur
Joined: Nov 2008
Posts: 1,789 |
Ok, now explain how limiting voltage is harder on speakers?
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Re: M80's with Yamaha 1800
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
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It's much easier to drive receiver into clipping the with the switch in the 4 ohm setting due to the voltage being significantly reduced.
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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Re: M80's with Yamaha 1800
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Joined: Nov 2008
Posts: 1,789
connoisseur
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connoisseur
Joined: Nov 2008
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I see, and clipping is detrimental to a speaker then you're saying.
My Stuff :
M80's QS8's VP150 EP800 Denon 4802 Emotiva XPA-3 Samsung BD-P3600 Sharp 65 Inch Aquos LCD
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Re: M80's with Yamaha 1800
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
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Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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