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#366587 - 02/14/12 10:49 AM Yamaha rx-671
bwallen77 Offline
enthusiast

Registered: 10/27/11
Posts: 36
Hello fellow Axiomites!

My theater will finally be finished within two weeks! However, as i'm still waiting for the mythical 978 from outlaw, I was thinking of picking up a cheaper receiver till then. I have 3 m80's as the fron three and not sure if this receiver is capable of driving them. I think the left and right can be set to 6 ohm on the receiver, but not the center. Anyway, is the 671 capable of driving them? would the lack of power damage my brand new m80's? one thought i had was to set the crossover high to divert power away from them until I get in the outlaw combo. Please help.

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#366591 - 02/14/12 11:14 AM Re: Yamaha rx-671 [Re: bwallen77]
casey01 Offline
aficionado

Registered: 07/03/08
Posts: 768
Loc: Toronto
Considering the length of time it has taken for the 978 to even appear, unfortunately, it may remain mythical forever. I don't know about the 671 but as a result of giving up on the appearance of the Outlaw Pre-Pro, a few months ago I bought a Yamaha RXA 2000 on sale and have 2 M80s and a VP160 across the front, a dynamite combination and it sounds great with plenty of volume.

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#366599 - 02/14/12 02:36 PM Re: Yamaha rx-671 [Re: bwallen77]
alan Offline
connoisseur

Registered: 01/29/02
Posts: 3187
Loc: Toronto/New York/Dwight
Hi bwallen,

I'd be reluctant to try and drive the three 4-ohm M80s with an inexpensive Yamaha. I'd hedge my bets and get a Denon, because I know the entry-level Denons have no problems--and have never had trouble--driving 4-ohm loads.

Whichever brand you decide to get, if there is an impedance setting, always leave the impedance switch at the highest setting for the 4-ohm M80s. Using a lower impedance switch setting on the receiver will reduce the receiver's power output significantly into 4 ohms; it inserts a voltage limiter into the circuit, thus reducing power output.

With reduced power output, you could drive the three M80s into clipping, resulting in potential damage to the drivers.

Regards,
Alan
_________________________
Alan Lofft,
Axiom Resident Expert

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#366601 - 02/14/12 02:41 PM Re: Yamaha rx-671 [Re: bwallen77]
bwallen77 Offline
enthusiast

Registered: 10/27/11
Posts: 36
How about an rx-A3000 Alan? I saw a sale for this for 1000.

Thanks for the input.

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#366603 - 02/14/12 02:46 PM Re: Yamaha rx-671 [Re: bwallen77]
alan Offline
connoisseur

Registered: 01/29/02
Posts: 3187
Loc: Toronto/New York/Dwight
I think you'd be fine with a big Yamaha. I haven't heard any reports from Axiom M80 owners of the large Yamahas shutting down with 4-ohm loads.

Alan
_________________________
Alan Lofft,
Axiom Resident Expert

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#366604 - 02/14/12 02:53 PM Re: Yamaha rx-671 [Re: bwallen77]
CatBrat Offline
axiomite

Registered: 08/05/09
Posts: 5837
Loc: Some random location
I'm wondering if the newer Denon entry level receivers are still as good. I was reading reviews on the Denon receivers lately and one of them said that the newer amp designs were not as powerful as the earlier designs. He was disappointed with his Denon and returned it for a different brand.

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#366605 - 02/14/12 03:27 PM Re: Yamaha rx-671 [Re: CatBrat]
Rock_Head Offline
aficionado

Registered: 10/10/04
Posts: 870
Loc: Delta, BC, Canada
From what I have read in the past few months it doesn't matter if it is entry level or mid to high level. There are numerous pages over on the 'other forum' with pros and cons for each manufacturer. I was looking at Denon or Marantz AVR's (both manufactured by the same company) and they all have issues. As I have done in the past I will probably go for a refurbished unit when I finally decide what to purchase. confused

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#366633 - 02/14/12 09:30 PM Re: Yamaha rx-671 [Re: bwallen77]
Lampshade Offline
connoisseur

Registered: 11/08/05
Posts: 1161
Loc: Holbrook, MA
I drove my 80s with a Yamaha AS-700, easily.
_________________________
M3 and Manley Stingray
M80 and Pioneer SC 55

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#366642 - 02/14/12 10:31 PM Re: Yamaha rx-671 [Re: bwallen77]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10383
BW, the 671 would probably do the job if, as always is pointed out, they're not played so loud and so long that overheating shuts down the receiver's protective circuits. Having said that, for reasons mentioned here before, in the price range you're apparently considering(about $500), I'd suggest you look instead at the Onkyo 709 or Denon 2312 from Accessories4less. Maybe even a better suggestion would be to forget the 978 and get a receiver at this time such as the Onkyo 3009 or Denon 4311 would should meet your needs in total.

As Alan pointed out, the lower impedance setting should never be used, regardless of what the rated impedance of the speakers is. This is a legally required provision to help prevent overheating and burning down the city, but does this by limiting the voltage available from the receiver's power supply section. The result is to limit power(the maximum is cut roughly in half)and maximum performance.
_________________________
-----------------------------------

Enjoy the music, not the equipment.



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#366661 - 02/15/12 01:34 AM Re: Yamaha rx-671 [Re: bwallen77]
dakkon Offline
connoisseur

Registered: 02/08/04
Posts: 1846
bwallen77 what about an Integra DHC-80.3, instead of the outlaw? John, the Integra seems to get pretty good reviews, do you know anything about that unit?

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