Onkyo TX-NR905 will this push my 7.1 LSi

2»

Comments

  • Snagglepuss1318
    Snagglepuss1318 Posts: 61
    edited August 2007
    http://www.axiomaudio.com/boards/showflat.php?Cat=0&Number=175935&page=0&fpart=all&vc=1

    Ya, after reading this, I think im going to play it safe. For the amount of $$ I have spent already im not going to risk it. Ill probably end up getting an Outlaw 7700 and not using the AVR's amps at all.
  • dorokusai
    dorokusai Posts: 25,577
    edited August 2007
    I'd take those "experiences" with a grain of salt.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
  • walk
    walk Posts: 178
    edited August 2007
    Yes I find that story quite suspicious. The Onkyo 805 is THX Ultra2 rated which means it must be able to drive 4-ohm speakers to Reference level in a 3000ft^3 room at rated distortion. Well the rated distortion on the 805 (and 905 too, likely) is 0.05% which is very low. I find it very hard to believe that someone damaged their tweeters with this amp without actually being able to hear distortion/clipping. Even less likely if he actually used the 4-ohm mode, which limits the current to prevent overloading!

    I'm guessing someone was just covering for some defective/poorly designed speaker(s) and trying to shift the blame somewhere else...

    Actually I read it again, he did hear distortion, or "crackling" though was that after the tweeters were already "damaged" by the amp somehow or were they just crap speakers?
    - Sony 50"A3000 SXRD; Onkyo TX-SR 805
    - Polk RTi150 mains; CSi30 center; FXi3 surrounds, R15 backs
    - Velodyne CHT-12 subwoofer
  • dorokusai
    dorokusai Posts: 25,577
    edited August 2007
    walk wrote: »
    Yes I find that story quite suspicious. The Onkyo 805 is THX Ultra2 rated which means it must be able to drive 4-ohm speakers to Reference level in a 3000ft^3 room at rated distortion. Well the rated distortion on the 805 (and 905 too, likely) is 0.05% which is very low. I find it very hard to believe that someone damaged their tweeters with this amp without actually being able to hear distortion/clipping. Even less likely if he actually used the 4-ohm mode, which limits the current to prevent overloading!

    I'm guessing someone was just covering for some defective/poorly designed speaker(s) and trying to shift the blame somewhere else...

    Actually I read it again, he did hear distortion, or "crackling" though was that after the tweeters were already "damaged" by the amp somehow or were they just crap speakers?

    He's probably just an idiot.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
  • starmax01
    starmax01 Posts: 8
    edited September 2007
    SolidSqual wrote: »
    Show me a 7.1 Lsi system on an AVR and I'll show you how to blow-up an amp.

    Oh really? I've been running a 9.3 Lsi system on my Denon 5805 AVR for over a year now with no outboard amplification. Sounds great and loves to be driven hard at high volumes. Can be had brand new cheaper than you think on eBay, etc.
  • Shannon W.
    Shannon W. Posts: 568
    edited September 2007
    I ran mine off a Sony Str-Da4ES for the longest time but after I heard how much of a difference a Separate amp did the only receiver I would even try and run them with now would be the Sunfire Ultimate Receiver II.
    But thats just me.

    Shannon
    50" Samsung Plasma
    Sony STR-DA4ES "use as Pre/amp"
    Pioneer Elite DV-45A DVD Player
    DLO HomeDock Deluxe iPod docking station
    Directv HR20 Sat. Receiver in black
    Sunfire Cinema Grand 7 Signature Amp
    Monster Cable AVS2000
    Monster Cable HTPS 5100 MKII
    Polk LSi 9's Front R/L
    Polk LSiC Center
    Polk LSiFX R/L Surround
    Polk LSi 7's Rear R/L
    SVS PB12-Plus/2
    Velodyne SMS-1
    Sony PS3
    Click Here To View my Rig
  • starmax01
    starmax01 Posts: 8
    edited September 2007
    Shannon W. wrote: »
    I ran mine off a Sony Str-Da4ES for the longest time but after I heard how much of a difference a Separate amp did the only receiver I would even try and run them with now would be the Sunfire Ultimate Receiver II.
    But thats just me.

    Shannon

    Oh? Then I assume you've actually auditioned all the other receivers in the Sunfire's class to come up with your opinion?
  • askinquestions
    askinquestions Posts: 80
    edited September 2007
    You've had these babies wrapped up for 6 months??? That's like having a puppy and not being able to play with it... I don't have that much patients...
  • jfeinman
    jfeinman Posts: 29
    edited October 2007
    The Onkyo TX-NR905 is basically an Integra amp with the Onkyo name tag slapped on the front. It'll drive the LSi's just fine, as the LSis can be driven power-wise with pretty much anything as they are very efficient. But I agree, your money is going towards the video processing and multi-room capabilities. The amp is good, but I'd say its more at home powering RTi speakers. But for 1600 or so, you won't find a better amp for the money. If this is the most you can afford, you can bet that Onkyo will hands down give you the most bang for the buck. But with LSis, you could do much much better, say in the $2000 range.

    I've got some Polk SDA-2s, and I'm driving them with an Onkyo TX-SR703; an 800 dollar amp, and they sound sweet. Clear as a bell at full juice, and enough power to make it unbearable to be in the same room.

    I'd say the 905 will be plenty loud. Its quality of that audio is where the Preamp/Power Amp setups will be of a great advantage