LSi C shielding

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Comments

  • nascarmann
    nascarmann Posts: 1,464
    edited August 2002
    I would like to watch her do the F word.....:D
    Oh, the bottle has been to me, my closes friend, my worse enemy!
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  • F1nut
    F1nut Posts: 50,554
    edited August 2002
    No, like when she says F me F1nut.......I'm dreaming, man am I dreaming.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • nascarmann
    nascarmann Posts: 1,464
    edited August 2002
    I see said the blind man......
    Oh, the bottle has been to me, my closes friend, my worse enemy!
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  • Steve@3dai
    Steve@3dai Posts: 983
    edited August 2002
    I'm down with being the ginuea pig.

    Britney Spears huh? Naw, my heart is set on Christina!

    (Stay on topic... stay on topic ;))
    LSi 9/C/FX
    Arcam AVR-200
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  • mantis
    mantis Posts: 17,194
    edited August 2002
    But Sir I can't hold it any longer!!!!!
    Dan
    My personal quest is to save to world of bad audio, one thread at a time.
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  • daddy8
    daddy8 Posts: 6
    edited August 2002
    I have a sony and my SRS's did a number on my 35" set. Then I got the boss (my wife) to let me get the Polk Audio surround system I am using (rt800i, cs400i, fx500i and psw350) driven by a harmon kardon avr7000. DTS is awsome. Got to think highly of Polk Audio. They understand customer service and stand by thier products. It also does not hurt that they sound great as well. We can all hope that Polk Audio is around for years to come.:D
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  • pvabeach
    pvabeach Posts: 10
    edited August 2002
    I too am having a problem. When playing at loud levels, ~95db, the picture on my Sony XBR 36 wega actually bounces downwards with transients!!!. This did not occur with my CS400.
    Otherwize, the sound of 5 speaker LSI setup is AMAZING!!
    I've gotten up too many times to answer phone or door or check to see if its raining outside, only to discover it was coming from the speakers!.
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  • pvabeach
    pvabeach Posts: 10
    edited August 2002
    PS, my center is on a shelf about 3 inches above TV. Paul
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  • [Deleted User]
    [Deleted User] Posts: 7,658
    edited August 2002
    Hello,
    The engineering department believes they have a modified crossover for the LSiC speaker that will eliminate the interference problem with television sets. I would like to send one of these crossover networks to anyone who has this problem and determine if the change is successful. It would involve some simple tweeter/drivers removal and installation of the new crossover from the back of the enclosure. Please contact me at kswauger@polkaudio.com or telephone me at 1-800-377-7655 extension 891 to get receiving address and more detailed instructions.
    Regards, Ken Swauger
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  • Rotarydude
    Rotarydude Posts: 40
    edited December 2002
    I also have the same problem using the LSiC in reference volume. At lower volume it's okay.

    I currently is waiting for my reseller to replace my first one, because it had some damage to the wood work.

    If the second exhibit the problem again, what is the procedure on getting a LSiC that will not have this problem at high volume?
    Family room:
    2xLSi25, 1xLSiC, 4xLSiFX, SVS 20-39PC+, PT-52DL52, TS160, DTR 9.1, DVR985, DVL-700, CDP-C910, Panamax 5500 connected by Canare (4S11 w/Vampire and L-5CFB)

    Masterbed room:
    2xAR312-HO, 1xAR4C, 2xAR15, NHT Subone, WT-46805, SR-HD500, M-VR900, Denon 1600, Monster HTS-3500 connected by Monster Cables

    Waiting:
    Denon 5900, Denon 2200, and a 7 Channel 4ohm stable amp!
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  • howie777
    howie777 Posts: 357
    edited January 2003
    As an engineer, I am pretty impressed that polk acutally reads there message board! Its hard to find good companies, Marantz only gives a mailing address on their website! Who asks questions via mail? And the fact they will actually SEND you things to try out is AMAZING! Well even though I can't find a close place to listen to the LSi speakers I'm going to buy the LSi9s and LSiFX and wait until the center is fixed. Sounds like all the speakers might need this fix in the future (updated modles that is, just to be a bit better) Oh and my RT10s I bought for $500 5 years ago blow away the $1400 B&Ws I listen to as possible replacements today. LOL keep up the great work Polk. And that is pretty interesting the inductors where the problem. Man I love electronics. How does an aspiring engineer make his way into the audio world? I have 2.5 years under my belt, 1.5 on DVD players for the auto world :-( Working for auto company X as a supplier is a pain. To see a product with such potential be butchered by someone who has no clue is so painful! Note, I used company X to protect the guilty and my JOB!

    Great job Polk!

    Howie
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  • infinitiqx4
    infinitiqx4 Posts: 80
    edited January 2003
    Any updates? When will new LSiC begin shipping without the problem?
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  • Zen Dragon
    Zen Dragon Posts: 501
    edited January 2003
    To all at Polk. Yes this was a fascinating look into the processes at Polk. It is not easy to foresee every possible situation a product may be used in.
    Great Info !!
    Great Response !!
    Great Work !!

    There are presently 9 speakers in my little Polk family and it's nice to know they not only sound great, but are supported so well by the Mfr.

    Mega Kudos


    :):):):)
    The Family
    Polk SDA-1C's
    Polk SDA-2
    Polk Monitor 10B's
    Polk LSI-9's
    Polk Monitor 5's
    Polk 5 jr's
    Polk PSW-450 Sub
    Polk CSI40 Center

    Do not one day come to die, and discover you have not lived.
    This is pretty f***ed up right here.
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  • lsi15
    lsi15 Posts: 5
    edited January 2003
    It is great to read all this info.

    I have a questions for folks at POLK, will the LSIC cause problem to the SONY pk-57WV700?. I am getting TV deliver in 2 days.

    Thanks,

    My current system is: LSI15, LSIC, and LSI9.
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  • scottvamp
    scottvamp Posts: 3,277
    edited January 2003
    If I'm right, then the answer is you have nothing to worry about. The guts (guns) of rear screen projector sets are way down near the bottom of the cabinet so that type of TV is virtually impervious to magnetic interference from any speaker place atop it.
    Paul is right - there are rarely issues with projection tv's. The small crt type tv's where as people are placing the speaker directly on top of the set. I am sure this happens with more than just Polk speakers. 100% magnetic isolation may be difficult. Even if one were to simply place the speaker on "shelf" a couple inches below or above the tv - this would not be an issue. IMO
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  • lsi15
    lsi15 Posts: 5
    edited January 2003
    Thanks for the response, my mistake, it is KP-57WV700. Anyway, I went out to M A and look at the top of this projection model and there is no room to place the center speaker on top. So it is a none issue. However, you are right Paul, Sony website really suck. One more questions but not related to this issue. All of Polk LSI speakers are 4 ohms, does that means that I have to find a Receiver that support 4 ohms as well? Thanks.
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  • brettw22
    brettw22 Posts: 7,624
    edited January 2003
    Originally posted by lsi15
    All of Polk LSI speakers are 4 ohms, does that means that I have to find a Receiver that support 4 ohms as well? Thanks.

    Without a doubt, YES!!!!!
    comment comment comment comment. bitchy.
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  • Dr. Spec
    Dr. Spec Posts: 3,780
    edited January 2003
    This has been a fabulous thread. Kudos to Polk Audio for their OUTSTANDING CS and R&D on this problem.

    CS is one of the reasons I bought Polk and SVS. And the primary reason I'm staying with both.

    FWIW, I suspected this was a coil related problem because it cropped up during bass passages. If the magnetic structure on the speaks was improperly shielded, the problem would occur all the time.

    When it is intermittent, it is obviously signal related. Any coil's magnetic field strength will increase as the amount of current being passed through it increases. And yes, I suspect setting the center to large and feeding it a full range signal will exacerbate the problem. I wonder if Steve could confirm this if possible.
    "What we do in life echoes in eternity"

    Ed Mullen (emullen@svsound.com)
    Director - Technology and Customer Service
    SVS
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  • scottvamp
    scottvamp Posts: 3,277
    edited January 2003
    Anyway, I went out to M A and look at the top of this projection model and there is no room to place the center speaker on top.
    I'm lost on this one. A projection TV without a "top". No room??:confused: I got's to see this.
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  • mantis
    mantis Posts: 17,194
    edited January 2003
    The Samsung has like a 3 inch top,no room for a center channel there unless you use some kind of modified centerchannel stand.
    The Mitsubisihi DLP is like this, the Sony Grand Wega is also.
    Dan
    My personal quest is to save to world of bad audio, one thread at a time.
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  • scottvamp
    scottvamp Posts: 3,277
    edited January 2003
    Thanks Mantis - I get it. Small front shelf. Slopes in the back like a big crt. I hate those. U can always use the space on top of the "other" ones.
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  • mantis
    mantis Posts: 17,194
    edited January 2003
    The DLP tv's are worse.You should look next time your out and about.Shocking .........HT is really big.Need to put a center channel somewhere.Thin is also in though.
    Dan
    My personal quest is to save to world of bad audio, one thread at a time.
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  • praedet
    praedet Posts: 314
    edited October 2009
    Suck, I have this problem but it is my fault as the x-over is upgraded :(
    HT: Ninja Master LSi9s, Ninja Master LSiC, Slightly Modded LSiFXs, Modded LSi7s, Outlaw LFM-1 EX and Polk PSW125
    Outlaw 970 Preamp, Outlaw 7700 Amp, Velodyne SMS-1, Oppo BDP-83,
    2 APC H-15s and a Panamax 5400 for good measure ;)
    Stereo: DIY Alix Music Server, DODD Audio Battery Tube Buffer, Modded DAC-60 and MF V-Link (for now), DIY Silver ICs, Battery Powered Class D SDS-254 Amp, and GR-Research N2X Speakers
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  • McLoki
    McLoki Posts: 5,231
    edited October 2009
    any shielding you can put under the bass driver crossover??
    Mains.............Polk LSi15 (Cherry)
    Center............Polk LSiC (Crossover upgraded)
    Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
    Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
    Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
    Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
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  • praedet
    praedet Posts: 314
    edited October 2009
    ^^^That is what I am going to look into. What sort of materials work well for magnetic shielding?
    HT: Ninja Master LSi9s, Ninja Master LSiC, Slightly Modded LSiFXs, Modded LSi7s, Outlaw LFM-1 EX and Polk PSW125
    Outlaw 970 Preamp, Outlaw 7700 Amp, Velodyne SMS-1, Oppo BDP-83,
    2 APC H-15s and a Panamax 5400 for good measure ;)
    Stereo: DIY Alix Music Server, DODD Audio Battery Tube Buffer, Modded DAC-60 and MF V-Link (for now), DIY Silver ICs, Battery Powered Class D SDS-254 Amp, and GR-Research N2X Speakers
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  • fuhugtwi
    fuhugtwi Posts: 1
    edited October 2009
    I accept: In the meantime, set the center speaker to the Small mode and use the supplied rubber feet or other vibration isolating devices such as Vibrapods. If that doesn't do the trick, move the speaker farther from the TV by raising it up with books or some other handy substance.
    DO NOT go out and buy bucking magnets as suggested in one reply. The drivers have bucking magnets on them already and adding more will make the problem worse instead of better.
    Cheap tennis ball machine for sale | Used lobster tennis ball machine | Review of Tennis twist, Playmate, Little Prince and Wilson tennis ball machines
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  • phuz
    phuz Posts: 2,372
    edited October 2009
    ^^^ Hey douchebag, you've been reported. ^^^ Door is closing in 3.... 2...
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  • Face
    Face Posts: 14,340
    edited October 2009
    I think it's funny that the spammer knew that the drivers already had bucking magnets.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • D.Invax
    D.Invax Posts: 7
    edited October 2009
    I just started playing with my LSI Megaraid i4 card today
    So Im no guru
    I hooked 3 drives on it Samsung 400GB in raid 5
    got a logical volume of about 799 GB, spot on for raid 5

    dont have naslite2 yet
    got my CF card, 4x400 Gb drives, just waiting on my CF to IDE adapter
    dating woman
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