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  1. #1

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    Default Powering the polk Lsi 9 / Lsi center

    Hi all
    I have two Lsi 9's (mains) & the Lsi center. Board wisdom calls for 200 wpc,
    from a separate high current amp to make them sing. Since the Lsi's are
    rated @ 4 ohms, should the amp at least provide 300 wpc @ 4 ohms ? I am
    running a Outlaw 7125 amp (194 wpc @ 4 ohms), a Denon 3300 receiver as
    a pre/pro. I listen to my movies from -17 to -23. My room is 15x15x10.
    Do I need to move up to the Outlaw 7200 amp (5 x 200 wpc) to open up
    my speakers ? I understand that the 200 wpc will give me more headroom,
    for peaks during a movies, but at my listening levels is there any difference ?
    In addition to headroom will I also notice a change in the soundstage,
    channel separation and detail that will makes the upgraded worth it ?
    I know that there has been alot of threads about this lately, and I have
    read most of them. I think the questions I asked will clear up my confusion.
    Thank you for your time.
    Equipment
    Panasonic TC-P54S2 Plasma
    Scientific Atlanta DVR
    ONKYO TX-SR705 AVR Pre/Pro
    Outlaw 7125 7 CH Power Amplifier
    Toshiba A2 HD-DVd
    Panasonic BD-30
    Harmony 550 remote control
    LSi9 ( Mains )
    LSiC ( Center )
    PSB Ambient 2 Dipoles
    SVS 20-39 PCI Subwoofer

  2. #2

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    Default

    Hi Al.
    Are you currently unhappy with their sound now at your listening levels?

    You will get an improvement moving to a 200 w per channel Outlaw but I don't think it would be significant enough for you to justify the expense at your listening levels. I used to have a complete LSI set up an Outlaw 200w per channel amp and I was left wanting. But I listen at -10 or more sometimes. I upgraded to an Earthquake Cinenova (600w @ 4ohms) and it sings even at high volumes.
    Last edited by wingnut4772; 06-05-2007 at 07:31 PM.
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.

  3. #3

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    Default

    Hi wingnut4742
    I am not unhappy, just want to know if I am missing anything that
    I can fix with better hardware. Is there another level ?
    Equipment
    Panasonic TC-P54S2 Plasma
    Scientific Atlanta DVR
    ONKYO TX-SR705 AVR Pre/Pro
    Outlaw 7125 7 CH Power Amplifier
    Toshiba A2 HD-DVd
    Panasonic BD-30
    Harmony 550 remote control
    LSi9 ( Mains )
    LSiC ( Center )
    PSB Ambient 2 Dipoles
    SVS 20-39 PCI Subwoofer

  4. #4

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    Default

    Yes there definitely is but if you are not unhappy and not listening at reference levels, I would save your dough.
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.

  5. #5

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    Default

    Hi wingnut4742
    When you moved to the Cinenova were you still using the Lsi set up ?
    You were left wanting @ 200 wpc, was the difference in moving from
    300 wpc @ 4 ohms to 600 wpc @ 4 ohms or moving from Outlaw to
    Earhquake Cinevova ?
    Equipment
    Panasonic TC-P54S2 Plasma
    Scientific Atlanta DVR
    ONKYO TX-SR705 AVR Pre/Pro
    Outlaw 7125 7 CH Power Amplifier
    Toshiba A2 HD-DVd
    Panasonic BD-30
    Harmony 550 remote control
    LSi9 ( Mains )
    LSiC ( Center )
    PSB Ambient 2 Dipoles
    SVS 20-39 PCI Subwoofer

  6. #6

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    Default

    Yes.
    I would imagine it was the power as well as the brand. Outlaw is very nice for the price point though and with most speakers enuff said..but for some reason the LSIs are a particularly picky speaker.
    You can use the search feature and find some comparisons.
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.

  7. #7

    Member Sales Rating: (19)

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    Tampa, FL
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    7,427

    Default

    wingnut4742 is right. The more power does not always just mean louder but cleaner at all volumes.
    engtaz

    I love how music can brighten up a bad day.

  8. #8

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    Default

    If 200 wpc is necessary to make thhe LSis sing, how much would it take to make them rap? Just curious being a Dr. Dre fan and all....
    Do you hear that buzzing noise?

  9. #9

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    I don't know but they will yodel at 100.
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.

  10. #10

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    Default

    I'm not that familiar with your Denon AVR. But check and see if it will let you bi-amp your mains with unused back surround channels. I have mine set up that way.
    The Escape Pod Equipment
    Samsung HL-S5679W
    Sony STR-DA5200ES
    Outlaw 7125
    Sony 60GB PS3, Blu-ray Disc
    TiVo Series 3 HD
    Universal Remote Control MX-900
    Polk Audio LSi9 ebony, fronts
    Polk Audio LSiC, center
    Polk Audio LC65i in wall, surrounds
    SVS PB12-Plus Piano Black
    Outlaw PCA interconnects
    BetterCables for HDMI & SUB

    Master Bedroom
    Sony KDL-46XBR4
    Sony 40GB PS3, 2nd Blu-Ray Disc
    Polk Audio i-Sonic

  11. #11

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    Default

    Quote Originally Posted by wingnut4772 View Post
    I don't know but they will yodel at 100.
    Helpfull just in case Mars attacks, again.:D
    The Escape Pod Equipment
    Samsung HL-S5679W
    Sony STR-DA5200ES
    Outlaw 7125
    Sony 60GB PS3, Blu-ray Disc
    TiVo Series 3 HD
    Universal Remote Control MX-900
    Polk Audio LSi9 ebony, fronts
    Polk Audio LSiC, center
    Polk Audio LC65i in wall, surrounds
    SVS PB12-Plus Piano Black
    Outlaw PCA interconnects
    BetterCables for HDMI & SUB

    Master Bedroom
    Sony KDL-46XBR4
    Sony 40GB PS3, 2nd Blu-Ray Disc
    Polk Audio i-Sonic

  12. #12

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    northern nj
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    Default

    the LSi's reward amplifier upgrades more than most speakers I have owned, but if your happy with the sound, there's no need to upgrade. The Outlaw you got is plenty to do justice to the LSi's

    your are in a position where I would upgrade amplification befroe upgrading speakers if and when the upgrade bug hits ya though
    Theater - Polk LSi15, LSiC, LSi9 speaks, DIY Sub (142.5L box, SVS plus driver, 500 Watt plate amp)...Outlaw 990 pre/pro, Carver TFM45, 2 X Outlaw M200 . Rotel RB980 . PS3, Monster 3600 power center

    2 Channel -
    Anthem Pre 2l, Jolida JD100 CD player, CAL Sigma DAC, Carver m4.0, Polk LSi9 w external modified Crossovers (thanks Trey!)

  13. #13

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    Default

    cyberhazard, are you happy with your Outlaw 7125 ? I am still looking at
    my Denon to see if could bi amp. I tried to bi-amp using the extra
    channels on the Outlaw, didnt hear any difference.
    Equipment
    Panasonic TC-P54S2 Plasma
    Scientific Atlanta DVR
    ONKYO TX-SR705 AVR Pre/Pro
    Outlaw 7125 7 CH Power Amplifier
    Toshiba A2 HD-DVd
    Panasonic BD-30
    Harmony 550 remote control
    LSi9 ( Mains )
    LSiC ( Center )
    PSB Ambient 2 Dipoles
    SVS 20-39 PCI Subwoofer

  14. #14

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    Mar 2004
    Location
    Bedford, TX
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    Default

    If you're going to upgrade, upgrade to a different brand. Move up in rated output isn't going to make much difference, if at all.

  15. #15

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    Back from Japan in Clover, SC
    Posts
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    Default

    Quote Originally Posted by Monster Jam View Post
    If 200 wpc is necessary to make thhe LSis sing, how much would it take to make them rap? Just curious being a Dr. Dre fan and all....
    That earthquake probably has them doing the human beat box and the Harlem Shake at the same time. What about the Sunfire TGA 5400, it puts out 800w@4 ohms.
    Shoot the jumper.....................BALLIN.............!!!! !

    Home Theater Pics in the Showcase

    http://www.polkaudio.com/forums/show...p?userid=73580

  16. #16

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    Aug 2004
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    Default

    We all know Darla is compensating for something - so whats my excuse??? :p :p
    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)

  17. #17

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    Default

    Quote Originally Posted by McLoki View Post
    We all know Darla is compensating for something - so whats my excuse??? :p :p
    Hey now!:D
    Sharp Elite 70
    Anthem D2V 3D
    Parasound 5250
    Parasound HCA 1000 A
    Parasound HCA 1000
    Oppo BDP 95
    Von Schweikert VR4 Jr R/L Fronts
    Von Schweikert LCR 4 Center
    Totem Mask Surrounds X4
    Hsu ULS-15 Quad Drive Subwoofers
    Sony PS3
    Squeezebox Touch

    Polk Atrium 7s on the patio just to keep my foot in the door.

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