Need help with LSi25's with or without amp

TheWad
TheWad Posts: 2
edited November 2012 in Basic Hookup/Wiring Questions
Hi,
I have a pair of LSi25's as main speakers. When I bought these I was using a Denon 2106 which is not rated to run 4 Ohm speakers. So I bought an Anthem PVA-7 amp. Now I have a Sony STR-DA4600ES which has a setting for 4 Ohm speakers. I have tried both with the amp and without and can't really tell a difference. With my limited knowledge it seems best to use the amp (which is now in the basement with the Denon 2106 and vintage Polks) with the LSi25's. Any thoughts and reasons would be appreciated. Thanks,
Post edited by TheWad on
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Comments

  • zingo
    zingo Posts: 11,258
    edited November 2012
    The Anthem amp would be a better choice than your Denon or Sony. However, if you are running all seven channels of the Anthem amp for surround sound, your LSi25 would still benefit from a dedicated 2-channel amp.
    Jake
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  • tonyb
    tonyb Posts: 32,981
    edited November 2012
    The reason you don't hear too much of a difference is that amp is somewhat on the light side for power at 105 watts. I'll agree with Jake that a more powerfull 2 channel amp would wake them up some but I sure wouldn't use a receiver to power them none the less.
    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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  • jparker82
    jparker82 Posts: 54
    edited November 2012
    I have had a nightmare with running LSI of receivers. And I am running 9 of them. I power my LSI25 with an Anthem MCA 20. I just added an Integra 70.1 9 channel amp for the others. My Onkyo TXNR 5007 was pushing the other 7 and its rated at 4 ohm. But I was afraid it was going to burn down my house. HOT hOT HOT.......

    I have been killing receivers with LSI speakers. Only separates from now on. The new Integra is running nice and cool and the Onkyo is running cooler without the load.

    The Anthem has pushed the 25's and has NO heat EVER. Its like I never turn it on.

    Best wishes on a solution.
    Onkyo Tx Nr 5007
    Integra NAS 2.3 audio serv
    Intergra DHS 8.8 HD-DVD
    Integra NVS 7.7 Home Theater Media Compt
    Anthem MCA 20
    Integra 70.1 9 channel amp
    OPPO 93 BLU RAY
    Monster HDP-2400 power cond
    Panamax M5300 PM
    Monster HtS-2600 Power cond
    Samsung 8000 series e64 plasma
    Polk LSI 25
    Polk LSI center
    Polk LSI 9
    Polk LSI 7
    Polk LSIM702 fx
    Boston Acoustic in ceil #'s ???
    Definitive tech sub
    Nordost Blue Heaven Rev2 BI wire(great cords)
    2 other systems master and pool area
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  • TheWad
    TheWad Posts: 2
    edited November 2012
    The Sony does not get too hot, but putting my hand on the top of it I do feel warmth. I have maxed out my $ for entertainment at this time. Today I plan to bring the amp back into the main room and save for a good two channel amp.
    Thanks!
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  • mwk455
    mwk455 Posts: 219
    edited November 2012
    Amps always make everything sound better>
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