"Bouncing" LFE signal

Discussion in 'Home Theater Projects' started by Dean Sellers, Jun 16, 2003.

  1. Dean Sellers

    Dean Sellers Agent

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    Help guys,
    I'm running a Denon 3300 receiver to a Parts Express passive sub.
    When I try to set the level on my sub, the spl "bounces" about 4db. It does it with the receiver's internal tones and with test discs.
    I usually use a TOA commercial amp, and thought the problem was with an input signal voltage mis-match. I swapped the amp out with a receiver. Same problem.
    Has anyone encountered this before? Is it my 3300?
    Thanks Dean
     
  2. Wayne A. Pflughaupt

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    Dean,

    This is quite common with low frequency test signals, especially the pink noise most receivers use, and I assume your test disc. It’s because pink noise is random in nature (sine wave gives a more steady reading.) You can try switching your meter to slow response, or perhaps averaging the fluctuation.

    Regards,
    Wayne A. Pflughaupt
     

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