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  1. #1

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    Default Best Subwoofer Hookup?

    So I just got the RM6900 system from Polk and connected it to my Denon AVR-1700 Receiver.

    What is the best way to hook-up the subwoofer to get the best clear bass?

    My Denon has Left Right Pre-Out and a subwoofer pre-out. I connected both to the Denon.

    However, the Polk manual recommends connecting the left right speakers to the sub then connecting the sub's left/right to the Denon.

    What should I do? What is everyone's recommendation?

    Thanks

  2. #2

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    No one?

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    Connect an RCA cable from the Denon's "Sub Pre-Out" and put it into the Left Input jack on the back of the subwoofer. Set your subwoofer's crossover to however you prefer. I have my sub set at 60hz, and the "Small" speaker setting in the receiver set to 60hz as well. I stagger the 2crossovers- to me it sounds INFINITELY superior, Velodyne recommends doing this as well, but that's a minority opinion.

    Welcome to the forums.
    Last edited by aaharvel; 10-26-2005 at 09:44 PM.

  4. #4

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    Hi,
    The only way I know to hook up a sub are:

    1. use the subwoofer output of your receiver to the sub.
    2. use 2-RCA cables from the receiver to the sub.
    3. use the speaker binding posts from the receiver to the sub.

    Now that I think about it when I first got my sub they recommended running the receiver to the sub then out to the speakers and it didnt work too well for some reason. (it's been a while)

    Welcome to the Forum....hope this helped.
    Last edited by PolknPepsi; 10-27-2005 at 11:59 AM.
    Denon #2900, Denon stereo receiver, Conrad Johnson Sonographe 120 amp, Blue Jeans cables, and Klipsch RF-7's

  5. #5
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    The RM6900 has a LFE input on the back. Here is a good way to hook it up:
    Connect all the speakers directly to the receiver. Connect the "sub out" of the receiver to the Yellow LFE in on the sub.

    On the receiver's speaker setup menu: Set all the speakers to "small", the subwoofer to "yes" and then the "crossover frequency" to 120 Hz.
    -Eric
    -Polk Audio

  6. #6

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    Quote Originally Posted by Eric Wong
    The RM6900 has a LFE input on the back. Here is a good way to hook it up:
    Connect all the speakers directly to the receiver. Connect the "sub out" of the receiver to the Yellow LFE in on the sub.

    On the receiver's speaker setup menu: Set all the speakers to "small", the subwoofer to "yes" and then the "crossover frequency" to 120 Hz.
    How about RM6800? It seems not powerful enough when I connected "sub pre-out" on receiver to left line-in on sub. Does Y splitter any help on that? Or any other better connection?

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    Ysplitter will add about 6db. This is very noticeable.

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    Quote Originally Posted by aaharvel
    Ysplitter will add about 6db. This is very noticeable.
    Thanks. Does speaker wire connection any better comparing with that?

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    imo speaker wire connections are not good. They're sloppy looking, more complex, and don't take advantage of your processor's internal bass management.

    Y-Splitters are available most anywhere: from specialty stores to the local RAT Shack.
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    Quote Originally Posted by aaharvel
    imo speaker wire connections are not good. They're sloppy looking, more complex, and don't take advantage of your processor's internal bass management.

    Y-Splitters are available most anywhere: from specialty stores to the local RAT Shack.
    Thank you very much. One last question: Some people mentioned the left and right line-in on sub are usually bridged internally. It means there will be no difference between connecting to the left and both left and right? Any comments on that?

  11. #11

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    Either one will do.......................I used Y cable to connect both L/R...
    TV :>Panasonic TC-P55VT50
    RECEIVER :> HARMAN KARDON AVR 7300
    FRONT :> L & R :> POLK RTI A9 500 W
    AMP :1> PARASOUND HALO A21 250 W
    AMP :2> EMOTIVA UPA-1 200 W
    CENTER :> POLK CSI A6 200 W
    SURROUND SIDE :>POLK RTi A3 150 W
    SURROUND REAR :>POLK F/XI A6 150 W
    DVD PLAYER(HD) :>TOSHIBA HD X-A2
    DVD PLAYER(BLU-RAY) :>Panasonic DMP-BDT 500
    POWER CONDITIONER :>PANAMAX M5400-EX
    SUBWOOFER :A> SVS PCI12 ULTRA 525 W
    SUBWOOFER :B> Polk PSW125 150 W

  12. #12
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    yup. either one. I used to use a y adapter. Now I just use the "L" input on the back of the sub and just turn the sub's volume all the way up, leave the back of the sub alone and just control the level of bass in the receiver.

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    Quote Originally Posted by aaharvel
    yup. either one. I used to use a y adapter. Now I just use the "L" input on the back of the sub and just turn the sub's volume all the way up, leave the back of the sub alone and just control the level of bass in the receiver.
    I don't remember why...but there's a good reason that you should always set the sub level in your receiver at an even 0 and control the volume on the sub...

    On the Y splitter thing, that may add 6db to the signal being sent to the sub, but it's not going to have any effect on the output capability of the sub. I'm sure that was implied, just wanted to make sure it's mentioned fully. There's no need to go the y splitter route - just hook up the sub cable to the sub, set the sub trim to 0 in the receiver, and turn up the volume on the sub until you get desired output.

    If you have issues where it sounds too loud with music and not enough with movies, or visa-versa, that could be indicative of some frequency peaks caused by room gain, acoustics, etc. You may need to look into plotting a frequency response graph and calibrating your sub - you want equal output across the range played by the sub.

    A properly calibrated should not have to be adjusted frequently based on source material - with a few exceptions of course [cough]Underworld[cough] :D
    Main HT
    Magnepan 1.6QR fronts, POlk R15 surrounds, Pioneer SC-25, Parasound Halo A23, Oppo BDP-105, Panasonic TC-P60ZT60, Sony PS3, Apple TV

    Bedroom System
    Polk Blackstone TL3, Polk PSWi225 Wireless Sub, HK 3490 Integrated, Oppo BDP-103, Sharp Aquos 32" TV, Apple TV

    Office Rig
    27" iMac w/Amarra, AudioQuest Dragonfly 1.2, Focal XS Book, Schiit Valhalla, Cypher Labs Theorem 720, Philips Fidelio X1, Sennheiser HD600, HiFiMan HE-500, B&W P7, LG 47LM7600, Sony PS3, Apple TV

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