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  1. #1

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    Sep 2010

    Default Lsi9 power requirements

    While a Denon 3311CI properly drive Lsi9 and a LsiC?

  2. #2

    Member Sales Rating: (31)

    Join Date
    Feb 2007
    Long Island


    I don't see anything about it being rated for 4ohm operation, so I would say no.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche

  3. #3

    Member Sales Rating: (4)

    Join Date
    Sep 2009
    Port Saint Lucie, FL


    The specs say that it has "low impedance drice capability", but it doesn't say that it's stable at 4 ohms. You'll need a separate amplifier that is 4 ohm stable to get the most out of the LSi's, and to protect your speakers and AVR. That Denon has 7.2 channels of preouts, so it would make a fine pre amp.
    Home Theater
    RTiA5 - CSiA6 - FXiA6 - PSW650 - Pioneer Elite SC-55 - Carver AV-505 - Sony 46" 120Hz - Monster HP 2400 - Xbox 360 - Playstation 3
    2 Channel
    Polk RTA 15TL - Harman Kardon HK3485 - HK DVD48 - Signal Cable IC's and speaker cables

  4. #4

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    May 2010
    San Mateo, CA


    I've got the 3311ci powering the mids/highs of my Rti A7s. I'm going with a parasound amp in a few days and plan to use the preouts as well. Even bi-amped with an Onkyo amp, I think a dedicated amp will do more.
    ALL BOXED UP for a while until I save up for a new place :(

    Home Theater:
    KEF Q900s / MIT Shotgun S3 / MIT CVT2 ICs | KEF Q600C | Polk FXi5 | BJC Wire | Signal / AQ ICs | Shunyata / Pangea PCs | Pioneer Elite SC 57 | Parasound NC2100 Pre | NAD M25 | Marantz SA8001 | Schiit Gungnir DAC | SB Touch

    2 Channel:
    Polk LSi9 (xo mods), Polk DSW MicroPro 2000 sub | NAD c375BEE | W4S DAC1 | SB Touch | Marantz SA-8001 | MIT AVt 2 | Kimber Hero / AQ / Signal ICs | Shunyata / Signal PCs

  5. #5

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    Sep 2010


    Thank you for your replies

  6. #6

    Member Sales Rating: (1)

    Join Date
    Jan 2004
    Quincy, MA


    Welcome to Club Polk Hungaro.

    Start looking at new or used amps. Your Polks will not operate to their full potential with just a receiver.

    I always recommend getting at least a 200wpc @ 8ohms, this way you will have enough power to drive almost any speakers now & in the future.
    Sunfire TGP III PrePro, Sunfire Cinema Grand Signature 405wpc 5 ch. Amp, Rotel RCD-1072 CDP, Onkyo TA2600 Tape Deck, Pioneer Elite 47-A DVD, Sony 32" XBR TV, Polk RTA-8T Main Speakers, Boston VR-920 Center Channel, Boston PV-600 Subwoofer, Polk DSW 400 Subwoofer, Polk FXi-3 Surround Speakers

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