Is this Poor Technical Assistance or what??

Discussion in 'Archived Threads 2001-2004' started by Kevin. W, Sep 4, 2001.

  1. Kevin. W

    Kevin. W Screenwriter

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    Here is the question I fired off to Rotel and the answer I got. Is it me or is this a case of bad customer service??
    Question:
    I was wondering if you could tell me if the RMB 1066 would function normally with Paradigm Mini Monitors when bridged at 3x150W? Reason I ask is that I have heard people talk about bridged AMPs having problems with speakers rated less than 8ohms. From what I can tell my Monitors are 8ohm compatable. Could you please find out and let me know.
    Answer:
    Dear Kevin,
    Please do not connect a Rotel amplifier in bridged mode to a loudspeaker rated at less than nominal 8 ohms.
    Best Regards,
    T** W****
     
  2. Henry Carmona

    Henry Carmona Screenwriter

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    Sorry Kevin,
    but looks like they answered as best they could.
    I think your email should have been directed to paradigm instead of Rotel.
    Paradigm would be the ones to tell you whether or not the Mini's would be compatible with a bridged amp.
    ------------------
    [​IMG] "Charlie don't surf."
    [Edited last by Henry Carmona on September 04, 2001 at 11:26 PM]
     
  3. Doug_B

    Doug_B Screenwriter

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    Well, I'm on Kevin's side on this one from the perspective that Rotel should have provided some sort of answer for speakers rated AT a nominal 8 ohms. Although far from an expert, I would also think that the capabilities associated with bridging are best provided from the amp manufacturer, although confirmation of nominal impedance via Paradigm may be of use.
    Doug
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    "Today is a good day to die." ...Old Lodge Skins
     
  4. Dave Morton

    Dave Morton Supporting Actor

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    sounds to me like they answered your question. Don't do it if the speakers are not 8 ohms. What more do you want?
    Of course the bridged amp may work but if there are any problems, they do want want to be responsible if it doesn't work. I'm sure they test everything to the standard 8 ohms. From a business perspective, they provided the correct answer.
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    ------ Dave ------
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    MY HT
     
  5. Kevin. W

    Kevin. W Screenwriter

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    Henry,
    I did e-mail Paradigm but they directed me towards Rotel to get more clarifcation on the impedance thing. I understand that over the frequency spectrum that the impedance of speakers(8 Ohmn for example) can swing either way. I now that the Rotel AMP when dridged must drive 8 Ohmn speakers but I would have liked some reassurance form Rotel that it can handle these swings in impedance load. Below is the answer I got from Paradigm.
    Kevin
    -----------------------------------------------------------
    Hi Kevin
    To my knowledge, the strict need for only 8 ohm nominal impedance-rated
    speakers would be a concern if the amplifier is not designed to be
    stable
    with lower impedance-rated models but you should ask Rotel for
    clarification on this issue.
    Sincerely,
    G*** T*****
    Paradigm Technical Support
    >Currently I am in a hunt for a AMP to power my fronts and Center(Mini
    >Monitors and CC-350). I am interested in the Rotel RMB-1066, a 6x60w
    >bridged to 3x150W. I have been told that when bridging an AMP you
    have
    >to make sure its powering 8ohm speakers to prevent any problems. I
    >noticed on the back of the speakers it says 8ohm compatable. Could I
    run
    >into problems? Below is a link to the AMP in Question. Thanks
    >
    >Kevin
    >
    >http://www.rotel.com/products/rmb1066.htm
    >
    [Edited last by Kevin. W on September 05, 2001 at 07:56 AM]
     
  6. Todd Hochard

    Todd Hochard Cinematographer

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  7. Kevin. W

    Kevin. W Screenwriter

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    Todd,
    Its not that I want too drive 150w into the speakers, from what I understand its better to have an AMP that can supply more juice than is needed. This way yo don't run into problems with it clipping. Unless I run at high volumes for a length of time I don't think I'll damage the speakers.
    Kevin
     
  8. Wayne A. Pflughaupt

    Moderator

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    Kevin,
    Personally I think it’s a bad idea to use bridged amps for the mains. A bridged amp is less stable, and usually sound quality suffers. If you need more power, it’s best to get a bigger amp.
    Regards,
    Wayne A. Pflughaupt
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    My Equipment List
     
  9. Kevin. W

    Kevin. W Screenwriter

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    quote:
    __________________________________________________ _______
    A bridged amp is less stable, and usually sound quality suffers
    __________________________________________________ _______
    Wayne,
    Excatly how does sound quality suffer with a bridged AMP? If the AMP can drive the speaker without going into protect mode then the sound should not be effected.
    Kevin
     
  10. Wayne_T

    Wayne_T Stunt Coordinator

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  11. Henry Carmona

    Henry Carmona Screenwriter

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    If you can find a Parasound amp on the cheap or used you could get a great amp able to handle down to 4 ohms!
    The 1205 puts out 140X5 at 8ohms
    and 200x5 at 4ohms.
    Not exactly cheap tho [​IMG]
    Theres a 1500 2 channel amp on Ebay right now:
     

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