Lsi 7 or lsi fx for surrounds?

turbojohngt
turbojohngt Posts: 16
edited January 2012 in Speakers
Two questions, which is better for side and rear surrounds? The lsi 7 or the lsi fx? And will my Anthem mrx 500 be enough juice to run either? (100 watts at 8 ohms but at 4 ohms I'm guessing 150-200?) thanx in advance guys!

Cheers, John
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  • codyc1ark
    codyc1ark Posts: 2,532
    edited January 2012
    John,

    I'd say it depends on your room, I went with another speaker besides lsi because of placement, the fx's would be best if you have the room, if they have space constraints I'd go with the 7's. Thankfully for you, if you buy the fx's you wouldn't be outnmuch for resale. Id really look for an external amp if your running lsi's off of that anthem. Good luck.

    Hey! 1k post here! Hoorah!
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  • NewHTguy
    NewHTguy Posts: 584
    edited January 2012
    My understanding is that the Fxs are more flexible when it comes to positioning. Just keep in mind that Lsi7s can always be used for a nice two-channel set-up if for any reason you decide to move on to a different HT system.

    Regarding power, my HK3490 (about 150 WPC for 4 Ohm loads) drives my 7's with no problem.
    MAIN: Polk Lsi9s; Polk PSW505; Lsic (in box); Onkyo SR-875; Parasound 2250; Cambridge Audio 740C; LG BD370
    OFFICE: Polk Lsi7; REL T3; HK 3490; CA 840W; Onkyo C-S5VL
    BENCHED: CS20; OWM3s
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  • turbojohngt
    turbojohngt Posts: 16
    edited January 2012
    Has anyone here by chance used both lsi 7's and lsi fx's for side and rear surrounds and give a comparison ? I use my rig for mostly ht but I do a bit of gaming as well as 7 channel music as well. Just trying to figure what will sound better, thanx again :)
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  • BeefJerky
    BeefJerky Posts: 1,320
    edited January 2012
    turbojohngt wrote: »
    Has anyone here by chance used both lsi 7's and lsi fx's for side and rear surrounds and give a comparison ? I use my rig for mostly ht but I do a bit of gaming as well as 7 channel music as well. Just trying to figure what will sound better, thanx again :)
    I am in the processes of switching out my side LSi7's to LSiFX's. However, time is limited, so I haven't had a chance to do the actual swap yet. Once I do, I can give you some impressions, but I can't say for sure when that will happen.
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  • tonyb
    tonyb Posts: 33,012
    edited January 2012
    turbojohngt wrote: »
    Two questions, which is better for side and rear surrounds? The lsi 7 or the lsi fx? And will my Anthem mrx 500 be enough juice to run either? (100 watts at 8 ohms but at 4 ohms I'm guessing 150-200?) thanx in advance guys!

    Cheers, John

    Thats iffy, especially if your doing 7 channel music. The Anthem, in 7 channel mode I believe is limited at 47 watts plus I don't even think they rated it for 6 ohm or 4 ohm. If you have another amp taking care of the front 3 speakers, then maybe you can get away with the 7's. The reason I say that is since you said you play 7 channel music, that represents a more constant load to all 7 channels than playing a movie would. Plus, you have more of a tendancy to turn up the volume on music playback.
    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
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  • praedet
    praedet Posts: 314
    edited January 2012
    I have LSiFXs for side and LSi7s (modded) for rear....

    I will say the ambiance type effects (rain, wind, battlefield sounds) are aided by the FXs, but creaking doors or voices moving around are better on the 7s...
    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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  • turbojohngt
    turbojohngt Posts: 16
    edited January 2012
    Yes the mrx 500 will be running the surround channels only, I have a monster 3 channel for the fronts and center. Anthem assured me that the mrx can run 4 ohm speakers without breaking a sweat. I mainly use my rig for 60% movies 30% gaming and 10% music
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  • mole'
    mole' Posts: 3,160
    edited January 2012
    LSiFX for my Rear and love it
    mole'
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