Need Cable Advice

pnewcomb
pnewcomb Posts: 6
I need a bit of advice in getting my speakers setup properly.

1) I just got myself the LSi series fronts, center, and surrounds. I also got myself the psw505 sub. The fronts on the LSi's both have powered subs in them, so I essentially have 3 separate subs as far as I understand it.

My receiver is a Yamaha RX-V871 which is 7.2 and has 2 subwoofer preouts. What would be the best way to go about this? If I didn't have the psw505 I'd just run each of the front subs through the 2 preouts, but what should I do since I have 3 of them?

2) As far as subwoofer connections go, my sub has a single input "unfiltered" and then a double input "filtered". Which one should I be using?

3) Regarding which type of cable to use for my preouts going to my power amplifier, are these just RCA cables, or are they Coaxial cables? I couldn't figure this out from reading the manual. I'm not entirely sure on what the difference is, and they both fit.

Also, how much difference is there really when it comes to audio cables? I see these ridiculously expensive monster cables out there and my gut instinct is to think that it's a bunch of BS and they just want to take advantage of ignorant newbies (such as myself). Is there really any difference between a $5 RCA cable from walmart vs a $50 monster cable?
Post edited by pnewcomb on

Comments

  • ken brydson
    ken brydson Posts: 8,980
    edited December 2011
    pnewcomb wrote: »
    I need a bit of advice in getting my speakers setup properly.

    1) I just got myself the LSi series fronts, center, and surrounds. I also got myself the psw505 sub. The fronts on the LSi's both have powered subs in them, so I essentially have 3 separate subs as far as I understand it.

    My receiver is a Yamaha RX-V871 which is 7.2 and has 2 subwoofer preouts. What would be the best way to go about this? If I didn't have the psw505 I'd just run each of the front subs through the 2 preouts, but what should I do since I have 3 of them?

    2) As far as subwoofer connections go, my sub has a single input "unfiltered" and then a double input "filtered". Which one should I be using?

    3) Regarding which type of cable to use for my preouts going to my power amplifier, are these just RCA cables, or are they Coaxial cables? I couldn't figure this out from reading the manual. I'm not entirely sure on what the difference is, and they both fit.

    Also, how much difference is there really when it comes to audio cables? I see these ridiculously expensive monster cables out there and my gut instinct is to think that it's a bunch of BS and they just want to take advantage of ignorant newbies (such as myself). Is there really any difference between a $5 RCA cable from walmart vs a $50 monster cable?

    Geez, where to start? I'll leave it to others, got some popcorn to make...
  • pnewcomb
    pnewcomb Posts: 6
    edited December 2011
    Keiko wrote: »

    hey keiko, this link doesn't work. unless it's a subtle hint to use search ;) I searched for a while, but couldn't find anybody else talking about this specific situation.
  • quadzilla
    quadzilla Posts: 1,543
    edited December 2011
    1. Split one out with a Y cable and run those to the LSis, and run the other sub out on the AVR to the PSW.

    2. LFE (unfiltered) in. Use the AVR to set the crossover point.

    3. Many RCA cables are basically a form of coax. All the means is that you have a center conductor with a shield. Other RCA type cables are built using what's known as "semi-balanced" construction. That means that they have a conductor for the center pin, a conductor for the ground, and a shield.

    That's the end of the factual part of the tour. I'm not touching the rest, since every time this question comes up it turns into a giant flame war. I will, however, venture to say that the mere fact of you asking that question tells me you're not ready for the answer(s).
    Turntable: Empire 208
    Arm: Rega 300
    Cart: Shelter 501 III
    Phono Pre: dsachs consulting
    Digital: Marantz SACD 30n
    Pre: Conrad Johnson ET3 SE
    Amp: Conrad Johnson Premier 350
    Cables: Cardas Neutral Reference
    Speakers: SDA 2.3TL, heavily modified
  • Tour2ma
    Tour2ma Posts: 10,177
    edited December 2011
    quadzilla wrote: »
    1. Split one out with a Y cable and run those to the LSis, and run the other sub out on the AVR to the PSW.
    An option, but not what Polk recommended for the LSi 25's. On the other hand, quadz, I agree with your avoidance of the wire issue, but will abstain form passing judgement on the OP's readiness.

    pnewcomb,
    Welcome and here is the manual for your 25's, the only LSi's with powered subs. Wiring the way it is depicted in Figure 6 (on page 5) keeps the LFE track away from the 25's, a good idea.

    Even with the LFE isolated you still may experience issues with three source of LF info overlapping due to Polk's recommended "Large" setting for the fronts; managing multiple, deep bass sources can be problematic (I can post some dead links to great, old threads on this as well :cheesygrin: ). At any rate... I'd suggest you at least try setting the fronts to "Small" with the AVR X-over initially set to 60 Hz (and experiment up and down from there). In addition to simplifying bass management, this will also reserve more of your 505 for LFE and other really deep 7-ch info.
    pnewcomb wrote: »
    hey keiko, this link doesn't work. unless it's a subtle hint to use search ;) I searched for a while, but couldn't find anybody else talking about this specific situation.
    Probably an old reference thread for exactly your situation. In one the the forum upgrades and/or archiving purges, the post ID terms changed unfortunately rendering the link dead.
    More later,
    Tour...
    Vox Copuli
    Better to remain silent and be thought a fool, than to open your mouth and remove all doubt. - Old English Proverb

    "Death doesn't come with a Uhaul." - Dennis Gardner

    "It's easy to get lost in price vs performance vs ego vs illusion." - doro
    "There is a certain entertainment value in ripping the occaisonal (sic) buttmunch..." - TroyD
  • quadzilla
    quadzilla Posts: 1,543
    edited December 2011
    Tour2ma wrote: »
    On the other hand, quadz, I agree with your avoidance of the wire issue, but will abstain form passing judgement on the OP's readiness.

    This being a reference to the aforementioned giant flame war, and few people being ready for what that unleashes.
    Turntable: Empire 208
    Arm: Rega 300
    Cart: Shelter 501 III
    Phono Pre: dsachs consulting
    Digital: Marantz SACD 30n
    Pre: Conrad Johnson ET3 SE
    Amp: Conrad Johnson Premier 350
    Cables: Cardas Neutral Reference
    Speakers: SDA 2.3TL, heavily modified
  • tonyb
    tonyb Posts: 33,065
    edited December 2011
    Forget about the wire for now, from what I can tell, he's running LSI's off a midline receiver. Not a good choice if the OP values his investment.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
  • rebuy
    rebuy Posts: 695
    edited December 2011
    Hey, the salesman has to make his living, I don't even know if that is rated for a 4 ohm speaker. That happens when you go to buy something and the salesman is stoopid. But then again, maybe he bought it all on line.

    I think you new a new receiver to drive LSI's. Don't burn them up with the Yamaha.
  • Tour2ma
    Tour2ma Posts: 10,177
    edited December 2011
    quadzilla wrote: »
    This being a reference to the aforementioned giant flame war, and few people being ready for what that unleashes.
    Pretty sure I knew that... :wink:
    tonyb wrote: »
    Forget about the wire for now, from what I can tell, he's running LSI's off a mid-line receiver. Not a good choice if the OP values his investment.
    Yup... many, many old threads about LSi towers eating entry/ mid-line receivers, but if he sets mains to "small", the 25's give him a chance of some jollies.
    More later,
    Tour...
    Vox Copuli
    Better to remain silent and be thought a fool, than to open your mouth and remove all doubt. - Old English Proverb

    "Death doesn't come with a Uhaul." - Dennis Gardner

    "It's easy to get lost in price vs performance vs ego vs illusion." - doro
    "There is a certain entertainment value in ripping the occaisonal (sic) buttmunch..." - TroyD
  • SDA1C
    SDA1C Posts: 2,072
    edited December 2011
    I go wit the 20% rule of thumb for cables. I don't yet have a 250k stereo so I might change my mind at that point but 5k in electronics deserves 1k in cables. Just my .02
    Too much **** to list....