broken amp/cab.. ideas whats wrong?

Discussion in 'Amps and Cabs [BG]' started by ludwig109, Jul 1, 2008.

  1. a week or so ago i was playing a gig with my gk1001rb II and a rbh1x15 gallien krueger gear. the band on before us was using our stuff so i set it up how id be using it and the next band left my settings alone, few songs into the first bands set and my amp goes silent, i presume its a blown speaker but im not sure.

    the 1x15 has no sound coming through it now.. well theres a slight buzz(ii think coming from the tweeter) but not how it should sound when i was checking what was going on with it onstage the clip light came on anytime you played anything accompanied with the buzz(the clip light hasnt came on constantly like before since i unplugged the speaker from the head) ... i wasnt even using at a high volume it was low enough, and there was no clipping either, i even had the limit button on the amp on so it was stopped from getting too loud aswell as the
    master volume and woofer controls only being around half way.

    the head seems ok though, i used it with a bands cab for a gig since and hooked it up to the pa for another..

    any ideas whats wrong? im going to send it back to where i bought it cause its relatively new and i have a guarantee.. but wondering what might have caused it...
    also could the head be the problem causing the cab to blow, or could the head be damaged from the clipping that happpened when the buzz was there..
    should i send back the head too?

    thanks in advance.
  2. soulgaard1


    Aug 1, 2005
    Hmm. Dont know what caused it, but sounds to me that the speaker is blown.
    Happened to me once - not playing loud at all. But that was an old speaker.
    Also heard that some gk speakers goes out easily. It happened to some of my friends.
    Their heads is tough **** though (own one myself)

    Anyway the guarantee should cover it.
  3. ok just got an email from the company that sold me the cab...

    what is the point in a 3 year guarantee if they dont cover something like this.. i wasnt playing loudly so to me this seems like its the equipments fault, am i wrong?

    sent them an angry email anyway... anything else i should do? would gk help me out atall?
  4. aquateen


    Apr 14, 2005
    get in touch with GK and see what they can do, their customer service is pretty good.
  5. Rick Auricchio

    Rick Auricchio Registered Bass Offender Supporting Member

    Are you absolutely sure the other band didn't change settings. For example, boosting bass very heavily, which would tear up the speaker?

    The other bassist might have a boost pedal that could do the damage.

    Blowing up speakers is usually considered misuse, and often not covered by warranty.
  6. sent an email anyway.
    he didnt have a pedal and he was using a passive bass so i dont think he was boosting much anyway and i was there watching incase he did something stupid to it as im paranoid when other people are using my stuff and will be much worse after this, he didnt change anything i dont think, and i had it set to normal enough eq barely changed, my bass on the eq is flat... i didnt mention that someone else was using it in the emails anyway.
    though im going to get in contact with the bassist and if i have to pay, try and get him to gimmie some cash..

    whole situation sucks im too poor for this, i spent all my money on the amp! arggg
  7. JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG
    Welcome to the music business!
  8. haha.. thanks
    atleast i still have the head i suppose.. but still mighty sucky situation
  9. 62bass


    Apr 3, 2005
    You can overload and blow any speaker with enough power. There's nothing wrong with GK speakers. They don't fail easily. They don't blow more than any other manufacturer. They use almost identical speakers, made by Eminence.

    I've used GK for many years. I've blown a couple speakers due to my own negligence. Letting another band use your gear is negligence. You don't know what that guy did. I'm sure it wasn't on purpose. And you can't expect a head as powerful as the one you own to not blow the single 15" speaker in your cabinet if you keep pushing it. You need an extra cabinet. Don't boost your bass. Back off on the contour control. Tell your guitar player to turn down or get a smaller amp.

    Owning bass gear that can handle a gig and still sound good costs money. It's a fact of life.

    If you'd started playing as long ago as I did, you'd really appreciate how far bass amps have come in the last 50 years. Today we're playing at volumes impossible back then. So you need a powerful head (you have one and it's one of the best) and speakers, enough of them, to handle what that amp can put out.
  10. i watched the guy he didnt change anything on the amp, used no pedals and had a passive bass mayb he had his eq on his bass changed a bit but would that really be enough to blow a speaker,
    i want a 4x10 to go with it but poorness and such but it wasnt being pushed thats my point... as i said the bass on the amp was set flat, mayb changed with his bass' eq but
    contour wasnt on or if it is on its only on less than a quarter.
    appreciate what youre saying but alot of these things werent happening.
  11. 62bass


    Apr 3, 2005
    Then it could be that the speaker had been abused in the past and was on its way out and happened at that time. I've had that happen to me too. No fault of the speaker. Just too much over a period of time. The answer is of course, another speaker cabinet to share the load so it doesn't have to work so hard. I know--it costs money. It costs me money too, but it's just part of being a bass player.
  12. it was a month or two old thats why im confused and ive never used it in an abusive way never had to its always been enough without pushng it.. id expect and not mind asmuch if it had been second hand but id just bought it brand new in may i think.
  13. BassmanPaul

    BassmanPaul Inactive

    Thing is, IMO, you are using a single speaker. I have gigged with a single 15 but that was back in the Sixties with a fifty watt power amp section. I would not even consider using a single 15 nowadays especially not with an amp of the power you have. As the good 62Bass opines, you need more speakers to share the load.

    As to the speaker, as has been said, a blown speaker is classed as abuse by most manufacturers. You now face a choice of replacing the speaker or having it re-coned. Where you live there is probably no one who can do a re-cone for you. You will most likely have to stay with the company you are currently dealing with. Get the speaker replaced and chalk the matter up to experience. We have ALL had to do that from time to time!

  14. Rick Auricchio

    Rick Auricchio Registered Bass Offender Supporting Member

    It is possible the speaker was defective and subsequently failed, but it's difficult to get the company to consider that possibility.

    If you speak politely with customer service, but clearly indicate the system's age and your care with it, they may offer a lower price for the repair/replacement. You may need to be firm and ask that the case be referred to a supervisor. Often a large company will prefer to give you a decent deal rather than have a disgruntled customer.
  15. update:
    been talking to a gk representative for the past few months and he talked to the people at thomann where i got it. and FINALY theyre gonna fix it for free. had so much trouble over this but sorted out finally.
    and from now on im gonna be much more of a b*stard and noones using my equiqment.
  16. RickenBoogie


    Jul 22, 2007
    Dallas, TX
    Good, but you still need more speaker coverage for that amp, or it'll happen again. Good luck.
  17. yeh wanting to get the rbh 4x10 to go with it.
    would the 4x10 be ok on its own for smaller gigs? or would it explode aswell :p...
    its 800watts at 8ohm
    also that and the 1x15 combined would that be too much fr the amp to handle? would it be 1200 watts together or do they divide and become half what they were at 4ohm
  18. 62bass


    Apr 3, 2005
    The 4x10 on its own would be fine for smaller gigs. Just depends how loud your smaller gigs get. I've successfully used a 1x15 with a high powered head (GK 2000RB) for small gigs and never damaged the speaker, and it had a lower power rating than you GK 15. For bigger gigs I used 2 of the 15 cabinets and didn't blow a speaker.

    The 1x15 and the 4x10 together won't be too much for your amp to handle. If you get distortion with both cabinets then you will know you're playing way too loud. A rig like that I'd only use for stadium gigs or outdoors. It'll get awfully loud if you want it.

    What kind of gigs are you playing and what type of rooms?

    Two 8 ohm cabinets combined will give you a 4 ohm load. Perfect for your GK. The power will be split evenly between the two cabinets. So, just as an example, if your head is capable of putting out 500 watts, then each cabinet will receive half of that, which is 250 watts. But, that's if you really have the head cranked. Most of the time, if you're playing at sane volumes, you won't be using the full power of the amp.
  19. gigwise, a bit of everything so id like to be able for anything, smaller gigs id just use the 4x10.

    so with the head at 700 watts at 4ohm
    it would be putting out 350watts to the 800watt 4x10 and 350 watts to the 400watt 1x15? would this make the 1x15 overpower the 4x10 volume wise or would the 4 speakers balalnce it out
  20. will33


    May 22, 2006
    The two cabinets will be getting equal power but the 410 may still sound louder because there are more speakers in it and if it's stacked on top it'll be closer to your ears and the 15 will be hitting you in the back of the knees. Get out away from the rig and it'll sound more balanced with the 15 adding deeper bottom the 410 doesn't have.