Problems with RT2000p subwoofer

mlint
mlint Posts: 4
edited October 2001 in Technical/Setup
Hi all! I'm running into a problem with one of my RT2000P speakers which I purchased from Crutchfield's back on 3/28/2000. My RT2000P speakers are connected to a Denon AVR-5800 Amplifier. I have the speakers bi-wired and have removed the spacer plate that spans across the speaker & subwoofer binding posts. I have the subwoofer portion of the speaker connected to the amp via a subwoofer cable. Anyway, to make a long story short, it appears that one of the speakers subwoofers is not working (the other portion of that speaker is working - tweeter & midrange). The green LED light on the front of the speaker which indicates that the powered amplifier is working is NOT lit up. I've already checked out the subwoofer cable and made sure that the speaker has power running to it. The switches on the built-in amp are set to AUTO. It would appear that the built-in powered amp may be shot...

Any of you have any suggestions that I might be able to try to help me in my problem? Is there a circuit breaker somewhere on the amp (looked but couldn't find one) that may have tripped that I could reset??? Any other tests that I could do to verify my suspicions?

If the built-in amp is shot, does anyone know if this this can be replaced separately or do I need to ship the whole speaker back??? Really hoping that this can be self-fixed since I'm not thrilled with shipping a speaker this size!!!
Post edited by mlint on
· Share on FacebookShare on Twitter

Comments

  • [Deleted User]
    [Deleted User] Posts: 7,658
    edited October 2001
    Hello,
    I believe you have sent this same request to me via email, correct? I have sent a reply and am sure I can be of help.
    Regards, Ken Swauger
    · Share on FacebookShare on Twitter
  • mlint
    mlint Posts: 4
    edited October 2001
    Hello Mark,
    Thanks for contacting us, I'm sorry there is a problem with the RT2000i.
    Probably the AC power fuse has blown on the bass amplifier. Usually this is
    caused by something failing in the amplifier itself. The best thing to do
    is:
    1). un-plug the AC power cord and disconnect the sub-woofer cable coming
    into the amplifier input plate. Remove the 12 Phillips head screws going
    around the circumference of the amplifier input plate (three on a side). The
    amplifier should come forward away from the cabinet.
    2). where the AC power cord comes through the input plate there will be a
    fuse holder. There should be a 2 Ampere 250 Volt 5 mm by 20 mm time delay
    fuse. In all likelihood the fuse has blown, you can try replacing the fuse
    with the exact value (sometimes hard to find). Be sure to return the
    amplifier to the cabinet before plugging in the AC power cord.
    3). it is also a good idea to remove the two 8" bass driver from the front
    of the enclosure. Take out the screws holding it onto the front surface of
    the enclosure. When you've removed the two wires connecting them to the
    amplifier, try playing the drivers directly with your receiver's speaker
    wires. We want to determine if the problem is one of the drivers, or if they
    are working fine.
    Once you know the situation, let me know the results.
    Regards, Ken, Polk
    · Share on FacebookShare on Twitter
  • mlint
    mlint Posts: 4
    edited October 2001
    Did what Ken suguested and sure enough the fuse was blown. Found the fuse at Radio Shack (4 fuses for $2..08) and it worked like a champ!!!
    · Share on FacebookShare on Twitter
  • jcaut
    jcaut Posts: 1,849
    edited October 2001
    Hmm.... Time delay fuse shouldn't blow unless something is wrong..... If the drivers are OK, I'd suspect something not quite right with the amp. I guess if that's the case it'll blow again.
    · Share on FacebookShare on Twitter
  • mlint
    mlint Posts: 4
    edited October 2001
    Funny you should mention the amp..... I just bought a new amp becuase old Denon receiver (pre-surround sound days!) I had connected to these speakers died. When the amp died, I opened it up and the fuse was blown on that as well, except when I replaced the fuse on it, it just blew again. Since it was so old and I was Jones'n for an up-to-date system, I bit the bullet and spend the $$$. Looks like when the amp died, it blew the fuse on the speaker amp as well. I didn't put 2 & 2 together until you mentioned the amp.... I did check out the drivers so I'm hoping that the replacement fuse will hold.... Keep your fingers crossed for my sake!
    · Share on FacebookShare on Twitter
  • jcaut
    jcaut Posts: 1,849
    edited October 2001
    Ok. That makes sense. In my life, a good portion of which I've spent messing with electronics, I can only think of one instance where I had a fuse blow "for no reason". Usually it means trouble.

    (Not saying this about you at all, but) I've seen so many people have problems with a fuse blowing repeatedly that they decide "Gee, it must need a bigger fuse. Stick this 30A in there!"
    I had to work with some people like that. :mad: Drives me crazy!
    · Share on FacebookShare on Twitter