THX speaker specs

Discussion in 'Archived Threads 2001-2004' started by Patrick_T, Jan 16, 2002.

  1. Patrick_T

    Patrick_T Agent

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    Ok,

    I have browsed several speaker lines that have THX certification. The M&K S150 speakers are -2 db at 77Hz and the Atlantic Technology 450 system mains are -3db at 80Hz. Now, I am not buying a THX system, but the speakers I will be using (M&K S-125's) have the same 3db point as the S-150's...77Hz. Now, it seems the THX speakers have a fairly high -3db point for being crossed over at 80Hz (per THX processor spec). The only thing I can come up with is that THX processors must have a very high order crossover to facilitate the transition from satellite to sub over such a small frequency range. Now, if I will not be using a THX processor (I will be using the outlaw 950) , then will I have problems crossing over at 80Hz, or should I consider moving up to 100 Hz? I'd try for myself but none of the system is purchased and this is basically just something that piqued my curiosity. Thanks.
     
  2. StephenL

    StephenL Second Unit

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  3. Patrick_T

    Patrick_T Agent

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  4. Patrick_T

    Patrick_T Agent

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  5. Patrick_T

    Patrick_T Agent

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    Maybe I answered my own question, though i would appreciate any verification. The 4802 manual has a section where is goes over setting the crossover. One of the option for setting the crossover frequency is "THX 80 Hz". This seems it will do what I want...the only question is if it really is a THX 80Hz...meaning the slopes match the THX spec. Maybe and email to denon will clear things up.
     
  6. Greg_R

    Greg_R Screenwriter

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    Patrick,

    If they call the crossover "THX 80" then it should meet the spec. If it's just "80" then you may want to call Denon and verify. I have a 5700 and it meets the spec (80Hz, appropriate roll-off).
     
  7. RichardH

    RichardH Supporting Actor

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    I don't see why they (Denon) would use a different slope when not in THX mode. I'm guessing it's the same whether it's THX or not.
     
  8. Lewis Besze

    Lewis Besze Producer

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  9. Paul_Saul

    Paul_Saul Stunt Coordinator

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    THX speaker spec have more to them than just

    a low frequency role off point. The M&K

    S-125s and S-150s are very different speakers.
     
  10. Patrick_T

    Patrick_T Agent

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  11. Paul_Saul

    Paul_Saul Stunt Coordinator

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    Both the S-125 and S-150 are fine systems (I have

    owned both of them). To my ear the S-150 has

    stronger mid-bass.
     
  12. Lewis Besze

    Lewis Besze Producer

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