very little bass from lsi15?

slone
slone Posts: 6
edited November 2008 in Speakers
I ordered a XPA-3 to run my lsi15's and center with. after hooking up the amp I'm still getting very litte response out of the 8" subs. at 4ohms I should be putting 300wpc to the speakers, shouldnt theses 8's be pounding?
60" pioneer elite plasma, pioneer elite vsx-01, pioneer elite bdp-05fd, 2-JL audio fathom F112's, 2-Polk audio LSi 15's, Polk LSi center, Polk incieling surround and rears.
Post edited by slone on
· Share on FacebookShare on Twitter

Comments

  • tcrossma
    tcrossma Posts: 1,301
    edited November 2008
    I've run my 15's with 3 different amps at this point, and bass is the one area where I think the 15's are kind of lacking. It's nice clean output, but it's just not particularly strong bass. But they are wonderful speakers overall.
    Speakers: Polk LSi15
    Pre: Adcom GFP-750 with HT Bypass
    Amp: Pass Labs X-150
    CD/DVD Player: Classe CDP-10
    Interconnects: MIT Shortgun S3 Pro XLR
    Speaker cables: MIT MH-750 bi-wire
    TT:Micro Seiki DD-35
    Cartridge:Denon DL-160
    Phono Pre:PS Audio GCPH
    · Share on FacebookShare on Twitter
  • Face
    Face Posts: 14,340
    edited November 2008
    The LSi15 is pretty balanced and should have more than "very little" bass. It is probably more of a placement issue than anything else.

    Try swapping the left and right towers and also try different placement around the room if possible.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
    · Share on FacebookShare on Twitter
  • curved
    curved Posts: 664
    edited November 2008
    Definetely a placement issue. Play around with them a bit. I would also take some pics - you'll get a lot more help when people can see room dimensions, characteristics, etc
    Living Room:....................[HTML] [/HTML] Zone 2 (Workout Room):
    AVR - Yamaha RX-V757......JBL 4312 Pro Monitors
    Pre - Nak CA-5
    AMP - Adcom 555 (Main)
    Main - Polk RTI8**/RTiA5
    AMP - Adcom 545II (Center)
    Center - Polk CSiA4**
    Sub - Snell Basis 300:p......Zone 3 (Outside)
    CD - Yamaha CDC-555.......Def Tech AW5500
    TV - Pani TH-42PZ80U
    BR - LG BD390
    Monster HTS1600 Power Center
    Dedicated Circuit - (2) 20amp, (1) 15amp
    Ben's IC, Canare 4S11
    **Dayton and Sonicap Caps with Mills Resistors**
    · Share on FacebookShare on Twitter
  • slone
    slone Posts: 6
    edited November 2008
    The problem is my avr wont allow me to run my subs and send a bass signal to my fronts at the same time.:( if I redirect the signal to my fronts I lose my subs.
    Is this common? How can I get around this? Different avr?
    60" pioneer elite plasma, pioneer elite vsx-01, pioneer elite bdp-05fd, 2-JL audio fathom F112's, 2-Polk audio LSi 15's, Polk LSi center, Polk incieling surround and rears.
    · Share on FacebookShare on Twitter
  • F1nut
    F1nut Posts: 50,814
    edited November 2008
    Set the front signal to full.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

    · Share on FacebookShare on Twitter
  • disneyjoe7
    disneyjoe7 Posts: 11,435
    edited November 2008
    I never like what an AVR does to 2 channel sound outside of Pure or Direct on some models I've played with. Stereo modes suck YMMV :)

    Speakers
    Carver Amazing Fronts
    CS400i Center
    RT800i's Rears
    Sub Paradigm Servo 15

    Electronics
    Conrad Johnson PV-5 pre-amp
    Parasound Halo A23
    Pioneer 84TXSi AVR
    Pioneer 79Avi DVD
    Sony CX400 CD changer
    Panasonic 42-PX60U Plasma
    WMC Win7 32bit HD DVR


    · Share on FacebookShare on Twitter
  • danger boy
    danger boy Posts: 15,722
    edited November 2008
    yeah you should set your fronts to full or large.. and that should increase the bass from them. or do the LSI15's have a volume knob on the rear of them? turn it up if they do.
    PolkFest 2012, who's going>?
    Vancouver, Canada Sept 30th, 2012 - Madonna concert :cheesygrin:
    · Share on FacebookShare on Twitter
  • curved
    curved Posts: 664
    edited November 2008
    My AVR lets me have 3 options:
    -BASS OUT FRONT
    -BASS OUT SUB
    -BASS OUT BOTH

    I obviously have mine set to BASS OUT BOTH.
    Living Room:....................[HTML] [/HTML] Zone 2 (Workout Room):
    AVR - Yamaha RX-V757......JBL 4312 Pro Monitors
    Pre - Nak CA-5
    AMP - Adcom 555 (Main)
    Main - Polk RTI8**/RTiA5
    AMP - Adcom 545II (Center)
    Center - Polk CSiA4**
    Sub - Snell Basis 300:p......Zone 3 (Outside)
    CD - Yamaha CDC-555.......Def Tech AW5500
    TV - Pani TH-42PZ80U
    BR - LG BD390
    Monster HTS1600 Power Center
    Dedicated Circuit - (2) 20amp, (1) 15amp
    Ben's IC, Canare 4S11
    **Dayton and Sonicap Caps with Mills Resistors**
    · Share on FacebookShare on Twitter
  • askinquestions
    askinquestions Posts: 80
    edited November 2008
    I believe on my 25's, I had it set at just sub, unless your using a seperate bass. You won't get the crazy bass out of say a svs, but if you monkey with the volume/Freq. you should get something pleasing. If your still having a prob., just give polk a call and they'll be happy to give you a hand. I had to do this when I first started and had a good conversation with set-up.
    · Share on FacebookShare on Twitter