Sub Woofer Mystery

Bob1947
Bob1947 Posts: 39
edited June 2013 in Basic Hookup/Wiring Questions
I think it's funny and interesting that when I was hooking up my Klipsch SW to my new Marantz SR 7007 I discovered there is no deciated LFE from the SW, which I knew, Just a left and right cable with RCA's. Then a dedicated LFE SW out on the Marantz. Not knowing how to deal with this I called Crutchfield and inquired about this. They are always very easy to deal with on the phone. The fellow I spoke with did some quick in service learning for me. Didn't realize that a SW is really only a mono connection. So he had me connect to the SW1 and then just dangle the one RCA. So just thought to mention, any ideas about any of this?
Regards, Bob

Samsung PN51E6500 Plasma
Marantz UD 7006 7.1 Blue Ray/CD/DVD Player
Marantz SR 7007 HT Procesor
Polk LSiM 705 Fronts
Polk LSiM 706c Center
Polk LSiM 703 Rear
Klipsch RW12D Sub
Music Hall 5.1 SE TT
Post edited by Bob1947 on
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Comments

  • Poolgod69
    Poolgod69 Posts: 184
    edited June 2013
    Bob,

    Not all subwoofers have LFE inputs. I have an Energy sub with RCA jacks and I only use the white jack with the subwoofer cable. I do not believe it makes a difference which color you choose.
    Marantz SR 5010
    Kenwood DR-V5070
    Polk RTi A9- Mains
    CSI A6- Center
    Elemental Designs A2-300 Subwoofer
    Panamax M4300-PM Power Conditioner

    Working on updating my set up :rolleyes:
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  • codyc1ark
    codyc1ark Posts: 2,532
    edited June 2013
    +1 ^ I'm not certain that this info is correct, but I have read that you may get a Db boost if you use a female to RCA male connection from a single lfe out connect. Like I said, I'm unsure if that's a fact.
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  • John K.
    John K. Posts: 822
    edited June 2013
    Bob, there should be no "Mystery" and nothing left to "dangle". Only one cable with an RCA plug is needed to be plugged into the sub out on your 7007. Then, as your RW12D manual explains, it should be plugged into the left line level input. Your sub does in fact have an LFE mode, which bypasses the internal low-pass filter. Since your 7007 will be doing the crossover filtering, the internal sub filter should be by-passed, so as to not conflict. This is done by pressing the right cursor key until "Low pass OFF LFE Mode" is displayed.
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  • Bob1947
    Bob1947 Posts: 39
    edited June 2013
    John, et. al. yes you are correct as I am finding. Also wondering if I am really needing a sw at all given this LSiM set up. The only speaker that it seems to matter is the center. Could be I still need time to break them in and learn how to tweak the sub's to my liking.
    Regards, Bob

    Samsung PN51E6500 Plasma
    Marantz UD 7006 7.1 Blue Ray/CD/DVD Player
    Marantz SR 7007 HT Procesor
    Polk LSiM 705 Fronts
    Polk LSiM 706c Center
    Polk LSiM 703 Rear
    Klipsch RW12D Sub
    Music Hall 5.1 SE TT
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  • ZLTFUL
    ZLTFUL Posts: 5,653
    edited June 2013
    John is spot on. The newer Klipsch subs from bottom to top of the line use the left RCA to double as the single LFE input.


    For the music side of things, the sub will do little more than take some load off your AVR. It is a nice all around sub. HT on the other hand can benefit by adding more impact to sound effects.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
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  • Bob1947
    Bob1947 Posts: 39
    edited June 2013
    You guys helped me alot on this. Many thanks!
    Regards, Bob

    Samsung PN51E6500 Plasma
    Marantz UD 7006 7.1 Blue Ray/CD/DVD Player
    Marantz SR 7007 HT Procesor
    Polk LSiM 705 Fronts
    Polk LSiM 706c Center
    Polk LSiM 703 Rear
    Klipsch RW12D Sub
    Music Hall 5.1 SE TT
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