Arcam AVR300 - No sub in DPLII/IIx

Discussion in 'AV Receivers & Amplifiers' started by Gasgeek, Apr 30, 2007.

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  1. Gasgeek

    Gasgeek
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    I installed an Arcam AVR300 along with Meadowlark Shearwater HRs, Petral center, and Viero surrounds, along with an SVS sub for a friend. Everything is working perfectly, except there is no sub/LFE output when playing a stereo source through Dolby Pro Logic II/IIx mode.

    The sub works fine in all other stereo modes including Stereo PCM, DTS Neo:6 music and cinema, etc. It also works perfectly in DD and dts 5.1 digital modes.

    Just no sub with the DPL II/IIx modes.

    The Arcam is set to Cross over - 80hz
    Large + Sub
    dts LFE Gain- 0db normal
    Sub Stereo - 0 db
    DVD-A Sub Level - 0 db normal

    Any ideas?
     
  2. Lufer

    Lufer
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    probably best sticking this in the Arcam thread! Scroll down below to Owners part of forum.
     
  3. Crustyloafer

    Crustyloafer
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    If you have the speakers set to large then the AVR300 will only redirect the very lowest frequencies to the subwoofer, ie those below about 20Hz. If you set the speakers to small then everything below your designated crossover frequncy of 80Hz will be redirected to the subwoofer.
     
  4. happynow

    happynow
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    Crusty I think you will find that small setting cuts of speakers at whatever limit you set but not the large setting.
    On large setting all bass sound goes to mains, and all bass sound below whatever limit you set goes to sub.
    So if set to large and 80hz all sound go to mains and anything below 80hz goes to sub. If your mains bottom out at 40hz then you are getting a doubling of everything below 80hz until your mains reach their lower limit of 40hz then just the sub does the the rest to 15hz or whatever its lower level is. Well it does on mine. You can see all this when using an SMS-1.
    My speakers on Large start to produce sound at 22hz the Sub starts below 15hz upto the crossover of 80hz then the sub fades away and the mains carry on right through.
    If rears and centre are set to small anything below 80hz is also sent to both the mains and the sub.
    Taken from Manual:

    Large : Pure stereo information – all audio is sent to the front left and right speakers. Use this
    setting if you have large front speakers.
    Note that this option will override the setting configured on the ‘Speaker Sizes' menu page.
    < Large +Sub : Pure stereo is fed to left and right and extracted bass is sent to the subwoofer. In
    this case the low frequency information is, effectively, duplicated.
    < Sat +Sub : Use this setting if you have &#8216;Small' satellite left and right speakers. Full bass
    management is used in analogue stereo so that analogue sources are fed to the DSP where the
    bass is filtered off left and right and redirected to the subwoofer.
     

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