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I have 5.1 Denon AVR-486 surround sound unit. The center speaker sounds tinney and the side and back speakers are not pushing big volume. I have 3 bose in the front two on the sides and two polk for my rear speakers. I am hoping you can recommend what I need to do to maximixe my volume.

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  • GeekaRama Nov 11, 2008

    so does it mean i need to replace these most expensive speakers? Or simply adjust the impedance output from the receiver to match the output simulating what the factory speakers had.

  • GeekaRama Nov 11, 2008

    I am sorry but not following the comment with regards to the acronymns and traveling sound. I do how ever understand connections and all speakers have been triple checked. Can you explain to me in Laymen terms how I can trouble shoot? I think we should start with the impedence question I replied and go from there.

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  • Master
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Hi,

Initially, pls do a passive resistance check with all the speakers using a DVM or a VOM. Often speakers would either be 4 or 8 ohms.Thereafter, pls verify that the polarity of the speakers, their speaker wires and how they are attached to the receiver are maintained. Additionally, you may to check for the physical travel of the speaker coil/cone and check if it is moving freely within its confines by lightly pushing and visually checking their action. If all the speakers checks out as well as the wiring and how they are connected, then most likely fault would be with the Denon AVR-486.

To my knowledge, the Denon AVR-486 has 7 separate amps but all of them are rated equally. You may want to cycle the DSP Surround Modes. If problem is common in all settings, then presumably a pair or more of the amps would need looking into. Additionally, you may want to double-check consistency of the speaker arrangements/connections at the rear.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Posted on Nov 11, 2008

  • Louie  Role
    Louie Role Nov 15, 2008

    Hi again,

    Any development(s) so far?


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  • Audio & Vide... Master
  • 19,396 Answers

Check that all speakers have same impedance, if speakers are different , thet is probably the cause.

Posted on Nov 11, 2008

  • Ginko
    Ginko Nov 11, 2008

    Using speakers with different caracteristics on a surround system is generally no good.

    When you use different speakers on a diffusion system like your surround, you must ensure that at least they have same impedance.

    Even with same impedance, speakers like the Bose should not be used in conjunction with other speakers, that is probably the cause for your bad sound distribution.


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