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  • Energy CF-30 and CF-70 Question

    Do you guys see a glaring problem with using two CF-30s for left and right channel and a CF-70 as a center?
    -I live in Madison, WI (what a boring sig right? :))

  • #2
    Originally posted by youra6
    Do you guys see a glaring problem with using two CF-30s for left and right channel and a CF-70 as a center?
    Hmmm the CF-70's a 6db more sensitive than the 30's...the center channel may sound very big during movies..especially since it is taller as well. AVR processing may help this.

    Those deals on the CF series are crazy. I don't know how much of an upgrade they would be over my Infinity Beta's though.

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    • #3
      Originally posted by youra6
      Do you guys see a glaring problem with using two CF-30s for left and right channel and a CF-70 as a center?
      Glaring, no. The 70 will probably sound "bigger/fuller" than the 30s but, aside from that, they should sound pretty similar.

      Those deals on the CF series are crazy. I don't know how much of an upgrade they would be over my Infinity Beta's though.
      The CF-30s are decent speakers. I tried out a pair recently, thinking they might replace the Paradigm 5se MkIIs I have in my home office, but I returned them because, well, the Paradigms were significantly better-sounding. YMMV. :D

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      • #4
        Originally posted by eljay
        Glaring, no. The 70 will probably sound "bigger/fuller" than the 30s but, aside from that, they should sound pretty similar.


        The CF-30s are decent speakers. I tried out a pair recently, thinking they might replace the Paradigm 5se MkIIs I have in my home office, but I returned them because, well, the Paradigms were significantly better-sounding. YMMV. :D
        Thanks. Generally speaking, I find people liking Paradigm better than Energy speakers. They do cost more than Energy though, as a pair of Paradigm speakers can easily exceed 2 grand.

        My concern now is not matching timbre, but the fact that my 80 watt SR508 may under drive the CF-70s causing them to burn out.
        -I live in Madison, WI (what a boring sig right? :))

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        • #5
          Originally posted by blackzarg
          Hmmm the CF-70's a 6db more sensitive than the 30's...the center channel may sound very big during movies..especially since it is taller as well. AVR processing may help this.

          Those deals on the CF series are crazy. I don't know how much of an upgrade they would be over my Infinity Beta's though.
          Vanns had them for 200 dollars a piece not too long ago. I got my hands one a CF-70 at wwstereo before they sold out.

          Do you think a 80W TX-SR508 can properly drive a CF-70?
          -I live in Madison, WI (what a boring sig right? :))

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          • #6
            bump. Any thoughts?
            -I live in Madison, WI (what a boring sig right? :))

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            • #7
              Originally posted by youra6
              bump. Any thoughts?
              IMO, the 508 should be able to drive the CF-70s (Recommended Amplifier Power 20-300 W/channel) properly at moderate volumes.

              I don't think under-driving is a concern - I'd be more worried about amplifier distortion at higher volume levels potentially damaging the speakers.

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              • #8
                Originally posted by youra6
                Do you think a 80W TX-SR508 can properly drive a CF-70?
                The Onkyo is rated to 100 watts, 6 ohms @ 2 channels. The Energy's at 8 ohms nominal, 4 ohms minimum. I think it would be ok, as long as you are not trying to pretend your room is a disco. :biglaugh:

                http://www.onkyousa.com/model.cfm?m=...s=Receiver&p=s

                http://www.energy-speakers.com/na-en...pecifications/

                Comment


                • #9
                  Originally posted by tesseract
                  The Onkyo is rated to 100 watts, 6 ohms @ 2 channels. The Energy's at 8 ohms nominal, 4 ohms minimum. I think it would be ok, as long as you are not trying to pretend your room is a disco. :biglaugh:

                  http://www.onkyousa.com/model.cfm?m=...s=Receiver&p=s

                  http://www.energy-speakers.com/na-en...pecifications/
                  Oh I won't, I got neighbors underneath me anyways. :D My next amp (far down the future) will be a Denon 891 or 2311.

                  Originally posted by eljay
                  IMO, the 508 should be able to drive the CF-70s (Recommended Amplifier Power 20-300 W/channel) properly at moderate volumes.

                  I don't think under-driving is a concern - I'd be more worried about amplifier distortion at higher volume levels potentially damaging the speakers.
                  Won't under driving them cause them to burn out?
                  -I live in Madison, WI (what a boring sig right? :))

                  Comment


                  • #10
                    Won't under driving them cause them to burn out?
                    I don't understand what you mean. How does one "under-drive" speakers so that they burn out? Do you mean just by playing stuff quietly? I've owned a number of pairs of speakers over the years, and I've played them at various levels - including quietly (in my home office, or late at night) - and I've never burned any of them out or otherwise damaged them.

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                    • #11
                      Originally posted by eljay
                      I don't understand what you mean. How does one "under-drive" speakers so that they burn out? Do you mean just by playing stuff quietly? I've owned a number of pairs of speakers over the years, and I've played them at various levels - including quietly (in my home office, or late at night) - and I've never burned any of them out or otherwise damaged them.
                      I agree, it sounds contradicting. That was just want a Energy tech guy told me :biglaugh:
                      -I live in Madison, WI (what a boring sig right? :))

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                      • #12
                        Originally posted by youra6
                        I agree, it sounds contradicting. That was just want a Energy tech guy told me :biglaugh:
                        It is much easier to clip with a lower powered amp. He means, do not pretend that your room is a disco and crank up your receiver to clipping!

                        Those speakers and that receiver will be fine together.

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                        • #13
                          Originally posted by tesseract
                          It is much easier to clip with a lower powered amp.
                          Right - you damage the speaker by driving the amp too hard if the amp is too weak for the speakers and spl you're looking for.

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                          • #14
                            Wish there was a way to overclock a receiver... :biglaugh:
                            -I live in Madison, WI (what a boring sig right? :))

                            Comment


                            • #15
                              Originally posted by youra6
                              Wish there was a way to overclock a receiver... :biglaugh:
                              If your receiver had a set of multi-channel pre-outputs, I would have pointed you to Emotiva. :)

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