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reciever for SpeakerCraft speakers

Discussion in 'AV Receivers' started by iisight, Jul 7, 2013.

  1. iisight

    iisight Auditioning

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    Hi guys,

    This is my first home theatre setup. I just moved into a house that is already equipped with the following ceiling speakers (there are 5 identical speakers present in the ceiling):

    SPEAKERCRAFT "CRS 625CRS-1" 2-Way in-wall (or ceiling) speakersTweeter: Pivoting 1" liquid cooled silk dome with Neodymium magnetWoofer: 6.5" Glass composite cone with rubber surroundEfficiency: 92dB 1W/1mPower: 5 - 120 watts(undistorted)Impedance.: 8 ohmsFrequency Response: 40Hz - 20kHz+/- 2dBDiameter x Depth: 9.8125"diameter x 4" highCut-out Diameter: 8.25"

    From the research I have done, I was hoping to purchase a denon 5.1 reciever. I understand that my reciver needs to have more watts than my speakers (to avoid underpowering them). I am confused as to what "5-120" watts means. Does this mean I need to find a reciever with >120 watts at 8 ohms? Or does it mean that the speaker will take in less watts (lets say 75 watts) and not clip.

    Thanks!
     
  2. schan1269

    schan1269 HTF Expert
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    Speaker wattage and receiver wattage are irrelevant.Buy your AVR based on the features you want/need.Those speakers are 92db efficient (which is the only relevant spec there is, besides ohm). Those will be producing 85db(the volume you listen to a standard TV show) on a blistering 1/4 of a watt.100Db is "long term hearing damage" and those speakers produce that on less than 10 watts. They'll produce 105db(which is reference volume for 20db headroom) on less than 15 watts.
     
  3. iisight

    iisight Auditioning

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    That is very helpful, thanks!
     
  4. schan1269

    schan1269 HTF Expert
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    By the way, you'll have to adjust the "wattage requirement" to room size/type.Small room with live acoustics will require less power than a large room with dead acoustics.Also, the db rating is 1 meter. 2 meters, same volume is double the power. 3 meters is quadruple the power.But...adding a second speaker recovers your initial "loss of volume" over 2 meters. The third through fifth add in a respective 1.5, 1 and .5. Those numbers aren't completely accurate on 3-5, but it has probably been 20 years since I've checked.
     
  5. iisight

    iisight Auditioning

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    I was really concerned about possible clipping/speaker damage, but it seems like that is a nonissue. Thanks again.
     
  6. schan1269

    schan1269 HTF Expert
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    Unless this room is huge, like 30x30, and you are trying to recreate Studio 54...
     

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