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  1. #1

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    Question Help with amp for speakers

    Hello every one happy holidays. I am a confused, new to the separate amp for speakers, person. I have polk lsi 25's, like loud music and of course to use with tv. My problem is their rated 300 wpc polk says dont go above 250 wpc however i see other people using amps with a lot of power to drive their speakers. Anu suggestions would be appreciated thank you

  2. #2

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    remember the LSIs are 4 ohm so if your not using an amp now and your avr isn't up to par be carefull with the volume. a good amp with at least 200wpc should do, but more juice usually = better sound.
    panasonic th-50pz85u
    pioneer elite vsx-92txh
    pioneer elite bdp-05fd
    emotiva xpa-3
    monster power hdp 2550
    sa 8300 hd dvr
    sda 2b's
    fronts - rti a9's
    center - csi a6
    surrounds - fxi a6's
    sub - polk dsw pro 600
    harmony one

  3. #3

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    most people on here say the more power you give the LSI's a lot of the time more they sing so if you go over 250 wpc at 4ohm... you'll probably be alright.. you'll probably blow your ears before before you blow the speakers by over powering them.
    HT - game room
    Yamaha RX V665 - AVR, Polk Monitor 60's,(HT), Polk Monitor 40's, Polk CS 1, Polk PSW 505, Samsung PN50B550 - 50" Plasma, PS3, Wii

    2ch - spare bedroom
    Squeezebox Touch->AQ Alpha Snake->Music Hall A15.2->Ascend Acoustics Sierra-1
    Yamaha S1800(SACD),Technics SL-QD33(TT)
    Head-fi - Sennheiser HD 280, Audio Technica ATH-AD700, B&W P5, Sennheiser HD 650
    Lenovo Laptop-> Dragonfly USB DAC/amp
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    Quote Originally Posted by coolsax View Post
    most people on here say the more power you give the LSI's a lot of the time more they sing so if you go over 250 wpc at 4ohm... you'll probably be alright.. you'll probably blow your ears before before you blow the speakers by over powering them.
    +1, put 1000W to those LSi's, you will blow out your eardrums before you hurt the speakers. Underpowering your speakers will hurt them more than overpowering them. LOL, having said that, just be careful with the volume knob.


    -Jeff
    HT Rig
    Receiver- Onkyo TX-SR806
    Mains- Polk Audio Monitor 70
    Center- Polk Audio CS2
    Surrounds- Polk Audio TSi 500's :D
    Sub- Polk Audio PSW125
    Retired- Polk Audio Monitor 40's
    T.V.- 60" Sony SXRD KDS-60A2000 LCoS
    Blu-Ray- 80 GB PS3


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    Polk Audio Monitor 10A's

    It's not that I'm insensitive, I just don't care.. :D

  5. #5

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    More speakers are damaged being over driven with too small of a amp. BUT just lost a crossover on a RTiA9 using a ROTEL RB-1090-( 380wpc. ) Haven't figured that one out yet. Under warranty. Need to call Polk in A.M.

  6. #6

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    ...being over driven,period. If your ears aren't good enough to tell you the limits of your speakers,your wallet will in repair costs.

  7. #7

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    Quote Originally Posted by 27wsc View Post
    Hello every one happy holidays. I am a confused, new to the separate amp for speakers, person. I have polk lsi 25's, like loud music and of course to use with tv. My problem is their rated 300 wpc polk says dont go above 250 wpc however i see other people using amps with a lot of power to drive their speakers. Anu suggestions would be appreciated thank you
    Welcome to Club Polk!

    IF you're using your LSI's with a AV receiver that has preamp outs for the front speakers you may want to look for a vintage stereo power amp to power them. I use a Yamaha P2200 pro power amp in my setup, it specs right up there with home audio amps at a fraction of the cost per watt per channel and shows up regularly on the 'bay. Plus there's no fan to add noise, just big friggin' heatsinks.

  8. #8

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    Quote Originally Posted by Krazyz1 View Post
    More speakers are damaged being over driven with too small of a amp. BUT just lost a crossover on a RTiA9 using a ROTEL RB-1090-( 380wpc. ) Haven't figured that one out yet. Under warranty. Need to call Polk in A.M.
    just did it..
    panasonic th-50pz85u
    pioneer elite vsx-92txh
    pioneer elite bdp-05fd
    emotiva xpa-3
    monster power hdp 2550
    sa 8300 hd dvr
    sda 2b's
    fronts - rti a9's
    center - csi a6
    surrounds - fxi a6's
    sub - polk dsw pro 600
    harmony one

  9. #9

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    Quote Originally Posted by tonyb View Post
    ...being over driven,period. If your ears aren't good enough to tell you the limits of your speakers,your wallet will in repair costs.
    and this is why..
    panasonic th-50pz85u
    pioneer elite vsx-92txh
    pioneer elite bdp-05fd
    emotiva xpa-3
    monster power hdp 2550
    sa 8300 hd dvr
    sda 2b's
    fronts - rti a9's
    center - csi a6
    surrounds - fxi a6's
    sub - polk dsw pro 600
    harmony one

  10. #10

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    In my particular case I have clipping lights ( that were not lit up ) also have peak lights on my SAE 2800 ( wich were not lit up ). My rule of thumb correct or not when the vocals are starting to distort and can't quite understand the words , I back the volume down till the clarity is regained. If some one has a better procedure , I am open for suggestions. Very well stated Mr. tonyb.

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