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IMWhizzle

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Posts posted by IMWhizzle

  1. While I don't personally own any of these amps and haven't heard them yet, I've been hearing good things about Emotiva and Outlaw as a relatively affordable way to go. Spare Change recently reviewed models from both of these brands:

    EMOTIVA BasX A-700 & A-500 Review

     
    [/url]  
    OUTLAW AUDIO 5000 AMPLIFIER Overview
     
     
     
    I hope this will help get you started on your hunt for a suitable external amp.
     
    Brendon


    Unfortunately the outlaw is not for sale in the Netherlands. The Emotiva XPA3 and the XPA5 are available. I read that the XPA line has a higher watts per channel compared to the basX line.
  2. I think it will be fine.  Though it would not hurt to look for a better amp for less money.  How is the used audio gear market in Holland?
     
    Bill


    Which amp do you recommend? This would be the first time for me, so I don’t know what to look for. I only saw the marantz because I can buy it new for 1600 euros.
  3. Personally, my choice would be a 3 channel amp of at least 125w/ch but if you can find a 5 channel at a great price by all means jump on it.
     
    Where are you located?  
     
    I found it, Holland.
     
    Bill


    Thanks! So a Marantz 8077 connected to the 7011 via preouts will do the job? Or do you recommend other brands?
  4. So if I am understanding, you will have a total of 9 channels plus the LFE(subwoofer) channel.  So I would say yes the 7011 can "handle" the load but most like only in certain conditions like a smallish room and listening at moderate levels.  My suggestion would be to set it up as planned and judge for yourself if an outboard amp is needed or wanted.  I am an outboard amp proponent so I am always going to lean in that direction when it comes to my systems.  A little extra horsepower is always a good thing.
     
    Bill


    Indeed, there will be 9 channels in use and two subwoofers via the sub pre outs on the receiver.

    The space is 45m2. Don’t know how much that is in square feet.

    What amp (make and model) do you suggest?
  5. Hi all,

     

    At the moment I have four Klipsch RP280F's (Fronts and Surrounds), a Klipsch RP450C center and two Klipsch R-115SW subwoofer, powered by a Marantz 7011 AV Receiver. Next month I am about to pull the trigger and buy four RP-500SA's Dolby Enabled speakers, but I don't know for certain if the receiver can handle this without sacrificing the sound quality. I don't listen to reference levels, but -10dB to -5dB volume is often used.

     

    Since the Reference Premiere Line are speakers with a high sensitivity I don't know about the dolby enabled speakers. Is an external amplifier needed connected to the pre outs of my Marantz 7011 or not?

     

    I hope one can shine more light to this matter.

  6. Many of these type post have a lot of generalizations.  There are no articles that I have read with science behind them stating that a speaker adequately power by and avr will be lifted to new heights by hooking it up to a power amp.  In General, more watts are better to have than less watts.  It is generally recommended to have twice the RMS power.  Most of us with 200 or 250 watts speakers don't use amps that strong.  Why, speaker efficiency is a key part in the power needs of the system.  Subwoofers are use for the heavy lifting of the LF's in an HT XO at 80 Hz.  This will dramatically cout the other speakers power requirements.
     
    The final decision will be for the OP.  He needs to known how loud he listens.
     
     
     
     

    My thoughts exactly!
  7.  
    I don't know what happened.  My new post shows up on my screen.  Here is a copy:
     
    If you know that 0 dB = reference level in your set up because you have calibrated with Audyssey or some similar device, and you never exceed -10 dB, then you may not need an external amplifier because you will only need 10 watts with the speakers you are talking about (or 20 watts to build in a 3 dB safety factor).  An external amp might still give you some extra headroom, though
    EDIT: I just looked over the info on your Marantz, and it will probably be fine.
     
    I don't know current models.  I have 2005 NAD power amps, which I like.  If you are what we Americans call "rolling in money," you might want to look into McIntosh or Luxman ("the McIntosh of Japan").  The best sounding solid state amp I've ever had was a Luxman, but they are just too expensive now.

    Thank you for this wonderful post. You gave more insight on the situation!
  8.  

    It depends on how loudly you play, the amount of dynamic range in your music/movies, and how good the power supply in the AVR is.  Many, perhaps most, AVRs have misleading power specs.  The one that is real is power in watts with all channels operating (therefore properly stressing the power supply), 20 to 20K Hz, 8 Ohms, at low distortion (0.09% or less).  Most manufacturers do not advertise power with all channels operating, just with 2, or worse, 1.  You have to get this info from a review that includes bench tests, or have your friendly local dealer run one for you in a brick, mortar, and measuring instrument store.

     

    A Medium Level is about 85 dB and only requires about 1 watt from a 98 dB sensitivity speaker in a room of about 3,000 cu ft.  Nowadays, Klipsch sensitivity specs are "in an average listening room."   To get the AES anechoic chamber sensitivity, subtract 4 dB.  Using the traditional corrected figure of 94 dB, at a normal listening distance (certainly not 1 M! -- more like 15 feet), in a 3,000 cubic foot room of average liveness:

     

    [approximate figures]

     

    Medium Level     85 dB     1 watt

    Loud Level           95 dB     10 watts

     

    Professional Film

    Reference Level

    PEAKS                  105 dB   100 watts

     

    Although most AVRs have some dynamic headroom, to be safe someone with speakers of 94 dB anechoic chamber sensitivity (98 dB room, 2.83v, 1 meter) should probably have an amplifier of at least 100 watts per channel, as measured with all channels operating, 20 to 20K Hz, 8 Ohms, and less than 0.09% THD.

     

    It is true that when all speakers (except the subwoofer) are set for SMALL, and the crossover is set for about 80 Hz, the subwoofer will do a lot of the heavy lifting, and take much of the burden off of the AVR and the main speakers, but not all!   A great timpani, bass drum, or Tam-Tam hit, as in Fanfare for the Common Man, can have an attack frequency of anywhere between 80 and 150 Hz, depending (and resonance much lower).  In movies, several sound effects, although they send most of their energy through the LFE to the subwoofer, with an additional 10 dB of available headroom (up to 115 dB) can still have great intensity above 80.  You don't want the leading edge to clip and take out a tweeter!

     

     

    Wow, informative post. Never knew this. I have the Marantz 7011 and am upgrading my setup with Atmos to 5.2.4. I own the Klipsch Reference Premiere line.

     

    I never play at reference level, mostly with the master volume at -10dB max. Do you still recommend external amplification? And which amp do you recommend which is available in Europe?

  9. No matter what AVR you are going to choose I'd strongly recommend to add a separate power amp to front channels at least, it improves sound a lot. Emotivas mentioned above are a really nice choice.


    Even when one is using a crossover of 80hz, two subwoofers and speakers with high efficiency of 98db?
  10. So I have a 5.2.2 setup and want to complete my setup to 5.2.4. 

     

    Now I have two 140SA’s and I’m looking for another pair of these. But now I’ve stumbled on the new RP-500SA. 

     

    What advice can you all give me? Another RP-140SA pair or the new RP-500SA’s? Is there a sound difference? 

  11. On 27-7-2017 at 4:29 PM, Lord_Beelzebub said:

    I was about to pull the trigger this Saturday by going out and buying the Marantz SR 7011 AVR when I saw Marantz is releasing a new receiver in a month or two, the SR 7012.  From what I read it will be a 200W per channel into 8ohm, upgraded from 24 to 32bit DAC’s, have the new video format of Hybrid Log Gamma and maybe a few other things.

    My question is, with this being a 200W per channel receiver, what would be my concern if my surround sound setup consisted of the following speakers?

    RP-280F @ 150W RMS as L/R speakers
    RP-450C @ 150W RMS as Center channel
    RP-160M @ 100W RMS as L/R surround speakers
    RP-140SA @ 50W RMS for Atmos/height speakers

    My first thought is, the new Marantz receiver has a much higher watt output than these speakers RMS limits, especially the 140SA’s.  I don’t plan on turning the volume up to max ever, but a moderate level for movies and music.  What’s a general rule of thumb and other things I should know about?

    Also, do you all think the new SR 7012 is worth the wait, no big deal over the current SR 7011, is a jump from 24 to 32bit DAC really worth it, etc??

    Any insights anyone can give me would be appreciated.  Again, I was about to purchase the SR 7011 this weekend when I saw I’m only a month or two away from a newer receiver.

    Thanks.

     

    I have the same speakers, except for your surrounds I chose The RP-280’s also all connected through a 7011 and a R-115SW subwoofer.

     

    these speakers are 98db efficient, so a power amp is wasting your money. These speakers don’t need a lot of power to play. You’re better off investing that money in a subwoofer or two.

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