having a hard time driving infinity kappa 8's with hafler xl600

Discussion in 'Infinity Loudspeakers' started by hick.man, Jul 12, 2018 at 2:22 PM.

  1. hick.man

    hick.man New Member

    eastern wa.
    hi all. I tend to pick up alot of stereo stuff when I figure the price is right "the wife says I have problem heheh" I am not savvy to all the technical stuff on the insides I just love great sounding music so please bear with me. I have a set of infinity kappa 8's that I'm having a hard time driving. I have a hafler xl600 that I picked up years ago and its been sitting collecting dust that I figured would drive them effortlessly but when I try to push them at over half throttle the woofers distort and sound like crap. so I then pulled out a hafler dh 220 that has also been collecting dust and I tried the bi-amp route. used the dh 220 to power the high's left and right and the xl600 to power the lows left and right and figured this setup should sing! NOPE same problem horrible distortion on the lows when trying to push it over half throttle. so I hooked them up to my NAD-C-375BEE and they sound pretty dam good but you can tell they need more juice but if i flip the switch on the speakers into extended mode the NAD cant handle it when I turn it up and shuts down into safe mode. if i have the NAD hooked up to my klipsch ref3 II speakers I can go over half throttle no problem and it sounds wickedly wonderful. this hafler xl600 is supposed to be the wholy grail and beast from what I've read but not impressed at all. I'm thinking maybe the hafler xl600 has something wrong with it? any thoughts? also I know some are going to say why do I need to turn it up over half, I dont allways listen to it that loud but sometimes... well you know heheh. besides if its too loud your probly too old?


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  2. swechsler

    swechsler Frog Whisperer

    7th row center
    I'd say there's probably something wrong with your amp. The XL600 is rated down to 1Ω so I don't think it's the speakers that's the problem. You don't hear it with the Klipsch speakers because they're more efficient and a less demanding load.
  3. 7.62

    7.62 Gearhead Subscriber

    Las Vegas
    I went down this road, my advice if you've got a good preamp pickup a GX5 or a Crown 1502. Both are relativly cheap in the used market. Takes that power issue away. Sit back and enjoy !

    I bought both of these amps new, the QSC GX5 will spank your Kappa 8's, only drawback is fan noise, which i eliminated with my own switch voiding the warranty. That amp is still working with my son in Oregon some 8 years later now.

    I have the Crown xls 1502 now with the 8.1 Kappas and it's really overkill, the bonus is the fan is controlled and I've never heard the fan.

    The sound quality, everyone is different. One thing I can say without reservation...you'll be backing off that volume knob pretty quick because your 8's are gong to let you know.

    IMHO, welcome to the forum.
  4. chef free

    chef free AK Subscriber Subscriber

    Hayward, Ca
    I suspect the amp. That thing should make those speakers stand at attention!
  5. Bahamayellow

    Bahamayellow Well-Known Member

    I’m assuming you are using the connecter straps on the back when using one amp and taking them off when using 2 amps. Just checking. I run my 9s with 2 Carver Tfm-25 s and they sing but with only one it’s a dud.
  6. slimpikkins

    slimpikkins Super Member

    South East PA
    An XL600 working correctly will play kappa8 without breaking a sweat all day long. Time for service.
    Ds2000, chef free and dlucy like this.


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