Crossover advice

Discussion in 'Home Cinema Speakers' started by scrapbook, May 22, 2004.

  1. scrapbook

    scrapbook
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    My AV Amp has cross over levels of 100 / 150 / 200

    My speakers go down to 60hz and i was under the impression that ideally the sub cross over should be circa 80hz.

    If the sub has separate cross over levels does this over rule the amp settings?

    or

    if the amp was set at 100hz and the sub at 80hz would i loose the range between 80hz and 100hz?
     
  2. Ian J

    Ian J
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    Whilst the amp would filter everything under 100Hz to the sub, the sub's crossover would only "accept" anything under 80Hz so the 80Hz to 100Hz frequencies would just disappear.

    I doubt whether either filter is a brick wall so it wouldn't be as extreme as that but it would probably still be better for you to have the amp's crossover set to 100Hz and the sub's either switched to the maximum or off (depending on the controls).
     
  3. scrapbook

    scrapbook
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    So what in real terms is the reason for having crossover levels on subs?

    I haven't looked into subs before and despite upgrading all of the other speakers I have maintained the basic sub i first brought in a sony package set. I noticed on many I have now researched that they have posts for front speakers...why would you connect your fronts directly to the sub.....to control the crossovers perhaps?
     
  4. jrpavel

    jrpavel
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    It concentrates the sub's energy to the lower frequencies and so you should get more lower bass by restricting the higher frequency output?
     
  5. Ian J

    Ian J
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    In many cases it isn't necessary at all but subs aern't just for AV but also for stereo use where they tend to be fed a full range signal from a high level connection from the amp and utililize a much lower crossover than would be the case if using satellite speakers in an AV setup.
     

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