how much power for lsi's ??

faster100
faster100 Posts: 6,124
edited July 2006 in Electronics
will 90 watts a channel power the lsi15's ok? Have a few amps i found and needed to know asap.. Thanks

I know it says 20 -250.. but will 90-100 be enough to make them shine alittle?
MY HT RIG:
Sherwood p-965
Sherwood sd871 dvd
Rotel 1075 amp x5
LSI15 mains
LsiC center
LSIfx surround backs
Lsi7 side surrounds
SVS pb12/plus2

2 Channel Rig:

nad 1020 Pre-amp
Rotel 1080 stereo amp
Polk sda 2B
kenwood grunt Tuner
realistic lab 450 TT
Signal cable IC
Post edited by faster100 on
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  • McLoki
    McLoki Posts: 5,231
    edited July 2006
    faster100 wrote:
    will 90 watts a channel power the lsi15's ok? Have a few amps i found and needed to know asap.. Thanks

    I know it says 20 -250.. but will 90-100 be enough to make them shine alittle?
    If it is from a dedicated amplifier - you should be fine. Any idea on the amp rating to the speakers? Dampening Factor?

    Mainly the LSi's will show any deficiencies and they will work well with most separate amplifiers. If you are purchasing new, might as well go large so you don't have to upgrade again, but if you have some laying around - I am sure they will sound great. (much better than 120 watts with an AVR)

    Michael
    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)
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  • faster100
    faster100 Posts: 6,124
    edited July 2006
    rotel 1066 is what i found used... 90 @ 4 ohms
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  • 2+2
    2+2 Posts: 546
    edited July 2006
    I dont think watts is that critical...more current....IMO Rotel rmb-1075 w/120 w/ch was not enough to control the woofer of the 15s but RB-1080 with 200w/ch was much much better. 80w from a HK amp w/higher current rating than 1075 sounded better and drove the 15s better....of course, not as good as 200 w but better than 120!! Clear as mud?
    System 1: Martin Logan Vantage, Rotel RC 1070, B&K Reference 200.2, Music Hall DAC 15.2, Yamaha 2300

    System 2: LSi15 w/db840, Marantz SR8400, Rotel 1080, RM6800 (C&S), Sony X2020ES

    System 3: LSi7, Yamaha SW215, Music Hall Maven, Music Hall MMF CD25 w/627opamps

    System 4: RTi100, Harman Kardon AVR 230, Panasonic DVD
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  • faster100
    faster100 Posts: 6,124
    edited July 2006
    ah, well then... Thanks though.. just wanted to think the 90 would be good enough :D
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  • faster100
    faster100 Posts: 6,124
    edited July 2006
    i passed, gonna sell these Rti's and get a outlaw 7 channel amp :D
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  • 2+2
    2+2 Posts: 546
    edited July 2006
    That's a good move cuz imo, it would not have sufficed....
    System 1: Martin Logan Vantage, Rotel RC 1070, B&K Reference 200.2, Music Hall DAC 15.2, Yamaha 2300

    System 2: LSi15 w/db840, Marantz SR8400, Rotel 1080, RM6800 (C&S), Sony X2020ES

    System 3: LSi7, Yamaha SW215, Music Hall Maven, Music Hall MMF CD25 w/627opamps

    System 4: RTi100, Harman Kardon AVR 230, Panasonic DVD
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  • SuperDave
    SuperDave Posts: 168
    edited July 2006
    I have an Adcom 5500 rated at 200wpc into 8 ohms, 350wpc into 4 ohms. Don't go with less power than that.
    SuperDave
    Yamaha RX-V992 (Center,Rears)
    Adcom GFA-5500 (Mains)
    Denon DVD-1920
    Mitsubishi 40" LCD
    DirecTV DVR Whole House
    Polk LSi25 Mains
    Polk LSiC Center
    Infinity RS1 Rears
    Monster THX Cables
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  • halo
    halo Posts: 5,616
    edited July 2006
    nevermind.
    Audio: Polk S15 * Polk S35 * Polk S10 * SVS SB-1000 Pro
    HT: Samsung QN90B * Marantz NR1510 * Panasonic DMP-BDT220 * Roku Ultra LT * APC H10
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  • faster100
    faster100 Posts: 6,124
    edited July 2006
    what's up Halo? i'll take all suggestions :)
    MY HT RIG:
    Sherwood p-965
    Sherwood sd871 dvd
    Rotel 1075 amp x5
    LSI15 mains
    LsiC center
    LSIfx surround backs
    Lsi7 side surrounds
    SVS pb12/plus2

    2 Channel Rig:

    nad 1020 Pre-amp
    Rotel 1080 stereo amp
    Polk sda 2B
    kenwood grunt Tuner
    realistic lab 450 TT
    Signal cable IC
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  • halo
    halo Posts: 5,616
    edited July 2006
    I was going to suggest some high powered tube amps. 60 - 75 wpc would be plenty to make them sing. I see you'd be using them for HT so that could get pricey. Just thinking that for a 2 ch set up. I may have a suggestion if you want the hook up.
    Audio: Polk S15 * Polk S35 * Polk S10 * SVS SB-1000 Pro
    HT: Samsung QN90B * Marantz NR1510 * Panasonic DMP-BDT220 * Roku Ultra LT * APC H10
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