Crossover Frequencies...

Discussion in 'Subwoofers' started by SimonYoung, Nov 1, 2005.

  1. SimonYoung

    SimonYoung
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    Can someone help me on this whole 'what frequency to set your crossover to' thing...

    I have a Denon DTH-500SD system with a passive subm, and in the setup, i can adjust the frequency from 40Hz to 150Hz, the default setting being at 150Hz, which is what i left mine at.

    However, reading through articles for set-ups, most people seem to favour setting their subs to 60-80hz. Would i benifit from dialling the frequency down to 80Hz (i can only adjust this at the amp, not at the sub), with my crossover set at 150Hz, does that mean that i've taken more of the bass off my speakers and letting the sub handle it? is it best to do this or let my speakers handle more of the low frequency effects? The speakers i have seem to be of a good quality and could probs handle it if its a better way of doing it.
     
  2. eviljohn2

    eviljohn2
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    Why not try it yourself and see what you think?

    I've had far more success with crossover frequencies around 60Hz to 80Hz than with higher values. :)
     
  3. Knyght_byte

    Knyght_byte
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    i'd always go with using the lowest crossover setting you can for the speakers.....mine is at 60hz because all my speakers are rated to 60hz or lower..........but some people reckon you should use higher than the lowest.....i think with satellites i would agree with that, but make sure the sub can cope, best to get an agile sub for the higher bass freqs, but it may not plumb to the lowest depths (or it might if u lucky or pay enough...lol)........but for full size floorstanders, those can hold their own normally so worth having them as large, and getting a sub with high level inputs to take the very lowest from them...
     
  4. Arif

    Arif
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    Also - with frequencies as high as anything much over 120Hertz - the sub will start to become 'localisable' - whereas you're not supposed to be able to tell where the sub is located from the sound output.

    This is a problem in my opinion, as the whole set-up is designed to steer sound and create a soundfield - which the amp electrickery goes to a lot of trouble to achieve. And a localisable sub is not factored into that equation! It'll balls up overall sound steering, and the effectiveness of the multi-speaker set-up.

    I'd concur with everyone else here too - and say to go for a slight margin above whatever is the bottom end of your satellites' frequency range - to cover the overlap.
     
  5. Mr Incredible

    Mr Incredible
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    80Hz crossover is the "THX" standard setting and many people use that whether they have THX certified kit or not.

    The bass management will also "manage" the LFE frequencies as well, whether or not you have the amp to send either just LFE or "LFE + Mains" (if you have your speakers set to large for the front). So it is quite possible you may see a tailing off of LFE frequencies the lower you set the crossover. 80 is a good compromise IMO.
     
  6. Knyght_byte

    Knyght_byte
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    only problem with THX if i remember right is that the room itself has to conform to THX specs, not just the equipment, i remember watching a show when they wanted to convert one of the london cinemas to a THX standard and the cost of transforming the building almost proved both cost prohibitive as well as physically prohibitive...lol......they managed to do it eventually tho, cant remember which cinema it was now.......
     

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