Lsi15 power concern

jerry22m
jerry22m Posts: 14
edited June 2007 in Speakers
Have been considering purchase of lsi15 however understand AVR may not power them properly, in your opinion how well would a Pioneer Elite AVR rated at 140wpc into 8 ohms work. Thanks Jerry
Post edited by jerry22m on
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  • Dennis Gardner
    Dennis Gardner Posts: 4,861
    edited June 2007
    You understood right.
    HT Optoma HD25 LV on 80" DIY Screen, Anthem MRX 300 Receiver, Pioneer Elite BDP 51FD Polk CS350LS, Polk SDA1C, Polk FX300, Polk RT55, Dual EBS Adire Shiva 320watt tuned to 17hz, ICs-DIY Twisted Prs, Speaker-Raymond Cable

    2 Channel Thorens TD 318 Grado ZF1, SACD/CD Marantz 8260, Soundstream/Krell DAC1, Audio Mirror PP1, Odyssey Stratos, ADS L-1290, ICs-DIY Twisted , Speaker-Raymond Cable
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  • tonyb
    tonyb Posts: 33,015
    edited June 2007
    Try the search at the top of the page,you'll find all you need to know about power and the LSI line.And welcome.
    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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  • McLoki
    McLoki Posts: 5,231
    edited June 2007
    It looks like that would be the flagship of the Elite line. I am sure it will run them, but to get the most out of the 15's, a separate amp would be best.

    If you got a 2 channel amp and ran the 15's off that and ran the rest of your home theater off the Pioneer I think it would be a much better solution as you would be removing the hardest to run speakers from your AVR leaving more power for the rest of the speakers in your setup.

    You could always purchase it and the LSi line, run them together, and when you want\need to upgrade purchase the amps. (I would just get them up front, but it is your system)

    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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  • G-2
    G-2 Posts: 533
    edited June 2007
    McLoki wrote: »
    It looks like that would be the flagship of the Elite line. I am sure it will run them, but to get the most out of the 15's, a separate amp would be best.

    If you got a 2 channel amp and ran the 15's off that and ran the rest of your home theater off the Pioneer I think it would be a much better solution as you would be removing the hardest to run speakers from your AVR leaving more power for the rest of the speakers in your setup.

    You could always purchase it and the LSi line, run them together, and when you want\need to upgrade purchase the amps. (I would just get them up front, but it is your system)

    Michael

    First off welcome! Stay awhile; you'll enjoy it.

    Regarding what Michael said; +1000, he's absolutely right. Give those 15's some power!
    Home Theater
    Chane     A3rx-c's, A2rc-c, A1rx-c's|Miller & Kreisel V-125's|Sony XBR65X810C 65" 4K LED TV|
    Earthquake Cinenova Grande-5|Pioneer Elite - VSX-84TXSi-AVR|TRIPPLITE LCR2400|
    Ultrasonic Amp Stand|Blue Jeans,Audioquest,Monster Cables|

    2 - Channel
    Polk     RTA 12c's w/RDO194 TWEETS, clarity ESA caps mills resistors (full mod)|Turntable|
    Anthem MCA 2|Acurus Act 3 Pre Pro|Parasound P/Ph 100|Pioneer Elite N-30|Adcom GDA600|
    Premier Rack|Blue Jeans,Audioquest,Monster Cables|
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  • jerry22m
    jerry22m Posts: 14
    edited June 2007
    Thanks for your replies, saw over at the Polk web page recommended amplifier power for the lsi15 is 20 - 250 W/channel what are they talking about there? Jerry
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  • dorokusai
    dorokusai Posts: 25,577
    edited June 2007
    The Pioneer Elite series is rated for use with speakers from 6 - 16 ohms. The Polk LSi is a 4 ohm loudspeaker.

    You can certainly use it and may never have a single problem but you are going against the manufacturers recommendations. You can easily integrate an outboard amplifier, 'insert brandname here', using the pre-outs on the AVR.

    Good luck.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • ohskigod
    ohskigod Posts: 6,502
    edited June 2007
    jerry22m wrote: »
    Thanks for your replies, saw over at the Polk web page recommended amplifier power for the lsi15 is 20 - 250 W/channel what are they talking about there? Jerry



    take those reccomendations with a grain of salt. My 15's are getting 500 a channel into 4 ohms from my carver and dont strain at all. Doro brings up a good point about the ohm rating of the AVR, I think the 4 ohm LSi's might yank power out of the reciever faster than it would like. watch the temperature, and give that reciever room to breath.

    remember, underpowerng a speaker is more risky than over powering. if the amp clips, that can cause problems, so dont go nuts with the volume, if you hear distortion at all, back off fast.
    Living Room 2 Channel -
    Schiit SYS Passive Pre. Jolida CD player. Songbird streamer. California Audio Labs Sigma II DAC, DIY 300as1/a1 Ice modules Class D amp. LSi15 with MM842 woofer upgrade, Nordost Blue Heaven and Unity interconnects.

    Upstairs 2 Channel Rig -
    Prometheus Ref. TVC passive pre, SAE A-205 Amp, Wiim pro streamer and Topping E50 DAC, California Audio Labs DX1 CD player, Von Schweikert VR3.5 speakers.

    Studio Rig - Scarlett 18i20(Gen3) DAW, Mac Mini, Aiyma A07 Max (BridgedX2), Totem Mites
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