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  1. #1

    Member Sales Rating: (0)

    Join Date
    Jun 2013

    Default Polkaudio Lsim703

    I just change my JMlab806 to Lsim703 bookself, but I find that Lism703 is much more bass than 806.
    Its seem that 806 sound is better in 2ch system. AM I correct ? Any cable or powercord , I can change to improve it.
    or this 703 is like that. My room around 120ft. Amp is Yamaha RX3020-

  2. #2

    Member Sales Rating: (0)

    Join Date
    May 2013
    San Jose, Ca


    I have found a warmer sound when running my Polks on a Yamaha. You may also want to check that the enhancer feature on the receiver is turned off. The default is on and in general I don't like how it makes my 703's sound. You may also want to change the eq to flat or through. You can also adjust the base down slightly on the receiver. I have also found that a factory reset and rerunning YPAO.

  3. #3

    Member Sales Rating: (7)

    Join Date
    Nov 2002
    Northern Virginia


    Generally speaking, JMlab speakers tend to be leaner and more detailed sounding than Polk's LSi series, which have a nice warm sound most of the time. Has to do with the metal inverted dome tweeter on the JMlab speakers. Personally, I find the Polks to be more pleasant for 2 channel use and JMlabs I've experienced better for home theater. They can be kind of shrill to my ears if paired with brighter electronics, which I find Yamaha receivers to be. Personal preference thing though. I wouldn't recommend trying to tune things with cables or power cords in this case when the root of the problem is either you prefer the leaner sound of the JMlab speakers or the receiver you're using doesn't pair the way with your LSi's the way you'd like. Running the eq in the receiver may be the best bet (and cheap too).
    1. JM Labs Electra 920.1 and CC30; MB Quart Vera Sub; Pioneer SC-57; Squeezebox Touch; Panasonic BDT-500 Blu-Ray; Samsung 52" LCD; FIOS; PS Audio Power Plant Premier; MIT S3 cables
    2. Polk SDA-SRS 2.3TL; Sonic Frontiers Line 3 SE; Classe Model 25; Marantz SA8004; Acoustech PH1P; Squeezebox Touch; Music Hall MMF7; PS Audio P1000; MIT S2 cables
    3. Polk SDA 2A; Parasound Halo JC-2 and A21; Musical Fidelity X-DAC; Squeezebox Touch; PS Audio 4.7; MIT S1 cables

  4. #4

    Member Sales Rating: (16)

    Join Date
    Nov 2007


    To the original poster - did you re-run the Yamaha YPOA after swapping in the LSiM703s?

    H9: If you don't trust what you are hearing, then maybe you need to be less invested in a hobby which all the pleasure comes from listening to music.

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