cs4000

mbutler1953
mbutler1953 Posts: 4
edited November 2005 in Speakers
my center has only the right working can it be repaired cs4000
Post edited by mbutler1953 on

Comments

  • beardog03
    beardog03 Posts: 5,550
    edited November 2005
    4000?
    Cary SLP-98L F1 DC Pre Amp (Jag Blue)
    Parasound HCA-3500
    Cary Audio V12 amp (Jag Red)
    Polk Audio Xm Reciever (Autographed by THE MAN Himself) :cool:
    Magnum Dynalab MD-102 Analog Tuna
    Jolida JD-100 CDP
    Polk Audio LSi9 Speaks (ebony)
    SVS PC-Ultra Sub
    AQ Bedrock Speaker Cables (Bi-Wired)
    MIT Shotgun S1 I/C`s
    AQ Black Thunder Sub Cables
    PS Audio Plus Power Cords
    Magnum Dynalab ST-2 FM Antenna
    Sanus Cherry wood Speak Stands
    Adona AV45CS3 / 3 Tier Rack (Black /Gold)


    :cool:
  • jcaut
    jcaut Posts: 1,849
    edited November 2005
    My guess is CS400 (i). Are you SURE only one midbass is working? They are crossed over differently, so that one driver only works up to 800Hz or so. This often makes it seem that only one driver is working, because one is obviously louder than the other one. It's fooled a lot of people, so you wouldn't be the first.

    If you're interested, here's basically why they do this: If both drivers try to play the same frequency, and the wavelength of that frequency is less than the distance between the drivers (wavelength goes down as frequency goes up), it causes "comb filtering" effects that result in a series of peaks and nulls in the horizontal off-axis response. Since a center speaker is generally oriented horizontally on or below a TV, and not everyone can sit directly in front of it, they design the crossover this way to produce a wider "sweet spot".

    You could always open it up and disconnect the driver that you know to be working, and that way you can tell for sure if the other one is working or not.

    Jason

    Oh, and if it actually is not working properly, a call to Polk CS would be the first step to take. I think the midwoofers are still available, and if you have to buy one you'll get a better deal if you tell them you are a Club Polk member.