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Sound formats + Sub Question

Discussion in 'TAG McLaren Audio Owners' Forum' started by Matt Horne, Aug 4, 2004.

  1. Matt Horne

    Matt Horne
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    Quick question...

    For the Prologic/TMS surround formats how does the + sub option work ?

    I have speakers set to small and sub crossover at 80hz.. so does the sub option just send anything under the crossover to the sub?

    Does that then mean the options without sub just cut the bass out completely? and is the +/- sub options then the same then if your speakers were set to large ?

    The manual just says low frequencies are sent to the sub and does not go into any further detail..

    Cheers

    Matt
     
  2. Stevesky

    Stevesky
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    Hi,

    If your speakers are declared as bass limited ("small" in THX talk) then Prologic and Prologic+Sub, TMS and TMS+Sub will do the same thing. If your speakers are declared as Full Range then "Prologic" or "TMS" will obey the bass management rules (in your case they are bass limited). Prologic+Sub or TMS+Sub will force your speakers to bass limited.

    The DP and AV192R works in a somewhat different way. In there the +sub modes are gone (excluding Direct+sub as Direct is a special case as it inherently ignores bass management settings). If you want an exception to the bass management rules then you can define this in the subwoofer setup menu on a per processing mode basis. Ideally a correctly setup system should not really require the bass management settings to be changed based on source material and processing mode, however if for example your subwoofer(s) don't integrate that well with your fronts it can be desirable to make your L,R full range when listening to music.
     
  3. Matt Horne

    Matt Horne
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    Ok Thanks..

    So if my speakers were set to large.. for PL and TMS then the sub would be ignored completely by default ? ANd if I used the +sub settings would it make the large speakers cutover at 80hz for example.. or still play them as large but also send sub 80 hz stuff through the sub ?

    Cheers

    Matt
     
  4. Stevesky

    Stevesky
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    Yes, as you have told the system that your main speakers can handle all frequencies.

    Yes

    No, as you would end up having an increase in energy in the room with sub and main speakers reproducing the same low frequency information.
     
  5. audionutter

    audionutter
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    steve,

    I've also got a question about the software and you're obviously the only person to ask about it :laugh: :thumbsup:

    If the incoming signal is a dolby digital stereo only, what are the multichannel processing modes that can be applied to it? Does TMS work? I presume multichannel DTS and DD is out? Does the THX make any difference to the sound?

    Thanks!
     
  6. Stevesky

    Stevesky
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    It all depends if you have an 32SP or 32DP processor. On an SP you can apply Prologic, PLII Music or PLII Movie. THX post processing couldn't be added due to a few issues for some setup configs and processor hardware builds - the perils of upgradeability ;o).

    On a 32DP or AV192R you can apply TMS, PL, PLII, PLIIx, Neo:6 or the legendary Party mode to the incoming DD2 stream. You can also apply THX to Prologic, PLII(x) Movie and Neo:6 Movie. The THX will apply re-equalisation and timbre matching. Depending on the post processing mode you may also get adaptive decorrolation thrown in as well.

    TMS requires a 2 channel input and will generate up to 7 channels from this.
     
  7. Matt Horne

    Matt Horne
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    Thanks for clearing that up :)

    Cheers

    Matt
     
  8. Kenny Glasgow

    Kenny Glasgow
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    Matt

    If you have a 32SP (like me) the DPLII works well with DD 2.0. A good example is Pink Floyd Live At Pompeii :)
     
  9. Matt Horne

    Matt Horne
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    Not got the DPL2 option yet :(.. still trying to decide if its worth the £100 to unlock it over TMS5+sub..

    Opinions ?

    Thanks

    Matt
     
  10. Matt Horne

    Matt Horne
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    Not got the DPL2 option yet :(.. still trying to decide if its worth the £100 to unlock it over TMS5+sub..

    Opinions ?

    Thanks

    Matt
     
  11. Kenny Glasgow

    Kenny Glasgow
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    Matt

    Definately worth it if you have Sky or Freeview and use PLII Movie mode. I prefer TMS for music but you may differ.
     

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