4ohm stable AVR

acmf74
acmf74 Posts: 936
edited July 2013 in Electronics
Polks,

I currently running a full LSi 5.1 setup powered with a Adcom GFR-700 AVR for my center and surrounds. The two front towers are powered by an Adcom 5802.
I'm looking for a newer AVR that is 4ohm stable to power those 3 speakers properly. Someone recommended me to look at the Cambridge Azur 650 AVR. I was hoping someone had experience with this AVR or their line of equipment.

Thanks.
Post edited by acmf74 on
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Comments

  • tonyb
    tonyb Posts: 32,967
    edited July 2013
    I would say look at Pioneer SC series of receivers. The ice powered avr's do better with 4 ohm speakers. Aside from that, maybe a better solution is looking into a 5 channel amp. No receiver will completely do power hungry 4 ohm speakers justice. Just sayin'.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
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  • B Run
    B Run Posts: 1,888
    edited July 2013
    I'd also consider Rotel, Nad, Anthem, Arcam or the SC series Pioneer. It depends on your budget and features you want.
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  • drummer86
    drummer86 Posts: 441
    edited July 2013
    I'll second the recommendations on the Rotels and Arcams as I don't have experience with Nad or Anthem. Are you just looking to consolidate? My local dealer (who is a trusted friend) sells the heck out of Arcam AVR360s to customers that don't want separates on their racks.
    Display: LG 47" LCD | AVR: Marantz SR5005 | BD: Panasonic BDT-210 | CD/SACD: Oppo 980 |
    Amps: Rotel RB-990bx | Marantz MA-500 | Speakers: Totem Mite : Totem Mite-C : RC60i | Sub: HSU VTF-2 MKIV

    HK AVR635 | Polk R30 | Sony DVD/SACD Player
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  • Glen B
    Glen B Posts: 269
    edited July 2013
    If I were looking for a new AVR that is 4-ohm stable, and delivers its continuous rated power into ALL channels driven simultaneously, I would seriously consider the Cambridge Azur 650R. Home Theater Magazine bench test results for the 650R shows this AVR to meet its published output into all channels as specified.
    Main System: Denon DP-59L | Audio-Technica AT33EV | Marantz SA-11S2 | Classe DR-10 | Classe CA-300 | Classe RC-1 | PSB Stratus Gold i's | DIY Balanced AC Power Conditioner | Acoustic Zen and NeoTech cables | Oyaide and Furutech power connectors | Dedicated 20A isolated ground line.

    Home Theater: Toshiba D-VR5SU | Laptop #1 |Outlaw Audio OAW3 wireless audio system | Marantz SR-19 | Phase Linear 400 Series 2, modified | AudioSource 10.1 EQ (for subs) | Axiom M3 v3’s | Axiom VP150 | Optimus PRO-X55AVs | Dayton 12” powered subs (x2) | Belkin PureAV PF-60 line conditioner.

    Party System: Laptop #2 | Audioquest Dragonfly USB DAC | Technics SU-A6 | Acurus A-250 | Radio Shack 15-band EQ | Pioneer SR-9 reverb | Cerwin Vega DX9's | Dayton 100° x 60° horns with titanium HF/MF compression drivers.
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  • polkfarmboy
    polkfarmboy Posts: 5,703
    edited July 2013
    Anthems a great avr and it has stunning results with its room correction system but it wont power the LSI unless you add an amp but its well worth a listen
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  • Emlyn
    Emlyn Posts: 4,491
    edited July 2013
    Cambridge did some updates recently and now have 651R and 751R models out. Cambridge has always tended to lag behind other brands and have quirky DSP features, but their sound quality is excellent. Because Cambridge is using class AB amps and a relatively small power supply, they do not rate them at 4 ohm stable. The back of the 751R only specifies 8 ohm stable. Doesn't mean they can't work with the LSi's, but the manufacturer doesn't stand behind that type of usage in their user manual. Personally, I think the Pioneer SC series is a good match of LSi speakers and all of them, even the cheapest SC-71, is guaranteed 4 ohm stable because of their D3 amp design.
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