I think Blade 2 fried my center speaker!!!

Discussion in 'Archived Threads 2001-2004' started by AlbertH, Sep 5, 2002.

  1. AlbertH

    AlbertH Stunt Coordinator

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    The dts track on this disc FRIED my center speaker. I watched at my normal "reference level" and my amp shut down like 3 times during very high notes (sword clings) and finally it fried my center speaker when the light grenade (the loud one) blew up
    It shut off my amp again and when i turned everything back on the crossover in my center sounds like it got shot. The sound in my center is muffled. I had to finish the movie by mixing the center into the fronts. GRR!! Does it seem like I fried the crossover or does it seem like I fried one of the drivers??? [​IMG]
     
  2. John F. Palacio

    John F. Palacio Supporting Actor

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  3. Phil Iturralde

    Phil Iturralde Screenwriter

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    Quote:



    It shut off my amp again and when i turned everything back on the crossover in my center sounds like it got shot. The sound in my center is muffled.





    FYI: From Sound & Visions IN THE LABS:
    Quote:



    The N-Center ... This speaker also had a minimum impedance of 2.8 ohms at 13.4 kHz, suggesting caution if you use it with an older receiver or amplifier.





    Debug process you can use to determine if it's the AV Receiver Amp or Center Speaker or both.

    NOTE: All rewiring steps below to be done while the AV Receiver is OFF!

    Step #1: - (Simple cone woofer check)
    1) Carefully push-in on the cones of the Center speaker woofer - not the 3/4" Titanium tweeter
    ... a) Cone moves in & out 'smoothly' - probably OK - go to Step #2
    ... b) Feels rough going in & out - you toasted your voice coil - see Step #4


    Step #2: - (Verify Center Speaker condition)
    1) Route either the Front Right or Left channel wire to the Center Speaker
    2) Switch to CD Input - 'Effect off' (2 channel playback)
    3) Play a Music CD
    ... a) Center Speaker still muffled?

    ...... YES - then the speakers fried
    ........... If the 2 cones speakers passed the push test (Step #1), then it's possibly the 3/4" Titanium tweeter or x-over.

    ...... NO - then the Center AMP channel is probably toasted - see Step #3


    Step #3: - (Verify Center Channel Amp condition)
    1) Using Step #2 - Effects off / Music CD scenario
    2) Route the AV Rec Amp Center channel wire to either one of the Front Right or Left Channel speaker
    3) Play a Music CD
    ... a) Sound still muffled?

    ...... YES - then the AMP is fried - see Step #5

    ...... NO - then AMP Center channel is probably OK.


    Step #4:
    1) Contact JBL for replacement

    Step #5:
    1) Contact Yamaha for service

    Hope this helps,
    Phil
     
  4. AlbertH

    AlbertH Stunt Coordinator

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    Wow phil, that is a great list for me to follow. Will post back when I find out what happened. I forgot to mention what type of speakers they were and I guess you went to my site and found out! Thanks.
     
  5. John Garcia

    John Garcia Executive Producer

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    What amp? If you are reaching these levels, it sounds like you are underpowered. Possibly obvious solution, turn it down! I had no issues with Blade II or LOTR, even at very loud levels.
     
  6. Manny_S

    Manny_S Stunt Coordinator

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    Thanks to the moderator that blocked that spoiler. I just bought the DVD this past tuesday and have yet to see the movie. [​IMG]
     
  7. AlbertH

    AlbertH Stunt Coordinator

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    Its a yamaha yht-5280 (110 watts per channel)
     
  8. Manny_S

    Manny_S Stunt Coordinator

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    If your amp is shutting off, you may not have enough ventilation. You don't have anything stacked on top of it or a shelf right over it do you? You should have at least 4 inches of clearance over your amp.
     
  9. AlbertH

    AlbertH Stunt Coordinator

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    Turns out I fried the tweeter. No sound is coming out. So the question is should I
    A. Have the speaker fixed.
    B. Have it replaced with the N-Center II (i can have this done because I work where I bought it.
    C. Upgrade to the S-Center II so I don't have to worry about it happenening again? (dont want to go this route because speakers proabably wont be timbre matched, but i'm sure a 3 way center won't hurt [​IMG] )
    [​IMG] I have plenty of room over the amp. The back of my rack is open, and I felt the receiver and it was just warm to the touch.
     
  10. Steve K.H.

    Steve K.H. Supporting Actor

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    You could have at least cleaned up the cabling before showing us that [​IMG]
     
  11. John Royster

    John Royster Screenwriter

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    you need more power or turn it down.
     
  12. John Garcia

    John Garcia Executive Producer

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    110wpc run at 1Khz. 100x5 20-20K @ 8 ohms, and that is Yamaha's spec, so the actual output may be less than that. What are those mains? Again, I think you are underpowered for the level you are trying to listen at. That is the #1 way to kill speakers.
     
  13. AlbertH

    AlbertH Stunt Coordinator

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    mains are nd-310 3 way dual 10 inch woofers.
     
  14. Manny_S

    Manny_S Stunt Coordinator

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    Anyone have a bag of plastic tie-wraps to donate to AlbertH? [​IMG]
     
  15. Holadem

    Holadem Lead Actor

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  16. Phil Iturralde

    Phil Iturralde Screenwriter

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    The JBL N-Center is rated:
    Maximum Recommended Amplifier Power: 150 Watts
    and the JBL S-Center is rated:
    Maximum Recommended Amplifier Power: 150 Watts
    ... so under the same conditions, you would of probably fried the S-Center tweeter also!?!
    The S-Center timbre matching will be different vs. the N-Series, though if you're planning to upgrade the rest of your HT speakers to the S-Series sometimes down the road, then you might want to get the S-Center now.
    Fixing the tweeter toasted N-Center is probably more cost effective, so it makes more sense to repair the N-Center instead of adding the S-Center to your N-Series setup, since repairing the N-Center will maintain your timbre (voice) matched HT N-Series setup!
    Food for thought,
    Phil
     
  17. AlbertH

    AlbertH Stunt Coordinator

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    My "reference level" is the level that i measure 85db on the avia disc, -19.0 on my receiver. This is the level I was listening to the Blade 2 movie at. I have never had any problems with straining or distortions at this level, and by golly the club
    scene had sooo much bass I was in heaven (pb12 and s120pii stacked subs).
    [​IMG].
     
  18. James Bergeron

    James Bergeron Supporting Actor

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    Your amp was clipping, I am surprised nobody mentioned this. Come on, if it blew the tweeter that's the only thing that makes sense.

    Anytime my amp "turned" off I freaked! How could you just keep going????
     
  19. Manny_S

    Manny_S Stunt Coordinator

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    STOP with the spoilers! Many of us haven't seen the movie yet! [​IMG]
     
  20. John Garcia

    John Garcia Executive Producer

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