Can someone explain this to me?

RVJII
RVJII Posts: 167
edited March 2004 in Electronics
Had I known about this forum before I bought my electronics I may have made some different choices. (Instead I relied on a friend...)

Anyway, I have been trying to get a better understanding of my receiver's real capabilities so that I can better understand what I am working with here. After talking to the Outlaw guys I have determined that the pre/pro section is considered very good. What I am trying to understand is the true power output but I am still too new to this to understand some of the stuff that they are talking about. Can someone explain these to me?

http://www.soundandvisionmag.com/assets/download/322004162858.pdf

http://www.soundandvisionmag.com/assets/download/5292003151358.pdf

Specifically, I am trying to understand the section on "Output at Clipping". The notes indicate that the true wattage is much higher but I don't completely understand what they are talking about.

I'm pretty confused right now and would appreciate any help that you guys can give me.
A lack of planning on your part does not constitute an emergency on my part...
Post edited by RVJII on
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Comments

  • PolkWannabie
    PolkWannabie Posts: 2,763
    edited March 2004
    Amplifiers or amplifier sections of receivers are usually, read hopefully, rated in terms of continuous wpc RMS across at least the listenable frequency range.

    Beyond this, most amplifiers will supply additional wpc if you will on demand i.e. they can upon demand when the source calls for it, supply additional power for short periods of time before distortion begins. In the old days and I guess still to some degree this was/is referred to as headroom.

    If you are running the pre-outs for your mains to the Outlaw monoblocks then the Outlaws amplifier specifications will be of much larger concern to you than those of the Onkyo.
    Rick
    HT+ Sunfire TG IV, Dual CG Sig II's, CinePro 1K2, Oppo 981, Audio Technica PL120, Polk SRT's & F/X1000's, Samsung 71" DLP
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  • RVJII
    RVJII Posts: 167
    edited March 2004
    You are right, I am running the Outlaw's to the RTi12's and am quite happy. I guess that I am just trying to:

    1. Educate myself

    2. Understand my receivers capabilities better

    3. Figure out how my Onkyo compares to other brands such as Denon and HK when it comes to performance. (not SQ as that is pretty subjective)
    A lack of planning on your part does not constitute an emergency on my part...
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  • faster100
    faster100 Posts: 6,124
    edited March 2004
    those brands are all similiar depending on models you compare.. The onkyo, denon and Hk are all good known brands... I have had Onkyo, Integra and denon now and liked them all
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  • steveinaz
    steveinaz Posts: 19,538
    edited March 2004
    You want to look for 3 things (primarily):

    1. Output rated in watts/rms (RMS=75% of the waveform peak)
    2. Current capability
    3. Dynamic headroom (related to current capability)

    Quidelines:

    1. Output-up to you, how efficient are your speakers vs how loud you like your music.
    2. Current-A good amplifier will have a 40amp or better current output capability
    3. Dynamic Headroom-1.0dB or better, 1.5dB is fairly typical of a good quality amplifier (higher is better)
    Source: Bluesound Node 2i - Preamp/DAC: Benchmark DAC2 DX - Amp: Parasound Halo A21 - Speakers: MartinLogan Motion 60XTi - Shop Rig: Yamaha A-S501 Integrated - Shop Spkrs: Elac Debut 2.0 B5.2
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  • jdhdiggs
    jdhdiggs Posts: 4,305
    edited March 2004
    Here's some more info:

    http://clubpolk.polkaudio.com/forum/showthread.php?s=&threadid=16250
    There is no genuine justice in any scheme of feeding and coddling the loafer whose only ponderable energies are devoted wholly to reproduction. Nine-tenths of the rights he bellows for are really privileges and he does nothing to deserve them. We not only acquired a vast population of morons, we have inculcated all morons, old or young, with the doctrine that the decent and industrious people of the country are bound to support them for all time.-Menkin
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  • goingganzo
    goingganzo Posts: 2,793
    edited March 2004
    aculey rms is .707 of peak and average is just below that.
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