Recalibrate with 2EQ if removing a subwoofer?

I'm going to be without a sub for a few weeks now, with my 2eq calibration being done with a sub prior, if I set subwoofer to "No" and the Front channels go from 40hz to "full frequencies", do I then have to recalibrate?

If I select in my AVR menu "subwoofer" to "NO" it automatically sets my fronts to "full frequency"
(they are KRK ST6 studio monitors with 6.5" DLDA Aluminum Woofers)

but:
Do I need to recalculate again after doing this?

And when I get my sub back should I change them from 40hz up to say 80hz?

I know I've heard that you should change what the audyssey setting sets crossovers to +20hz after it's calibration (40hz > 60hz) but then I also know that 2EQ has no LFE EQ and heard it's best to leave them at 40hz (or 2EQ's lowest suggested setting) since it will at least be EQ'd to the lowest possible Hz for the room.

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11 Comments

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    Chris Kyriakakis

    If you set the subwoofer to NO, then it is impossible to set the front L and R speakers to Small.  The definition of Small for the front speakers is: "send the bass to the sub".  So, without a sub there is no choice but to set them to Large.

    Also, if you make a change to what speakers are in the system then the AVR erases Audyssey settings and you will have to run it again.  That is done to prevent a speaker being connected later that wasn't part of the original measurement.

    With 2EQ there is little benefit in raising the xover frequency because 2EQ doesn't process the sub signal.

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    Nick

    Thanks for the swift reply, and that's what I was told it erases the EQ settings made by 2EQ, however Audyssey is still enabled upon doing this in the equalizer settings, which I thought was odd.

    I just assumed it was because 2EQ does nothing for the subwoofer in terms of equalization, so removing it does not effect the calibration data.

    But I will calibrate again just to be safe! Thanks Chris.

  • 0
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    pepar

    Should Audyssey be recalibrated after removing a sub from a 2EQ system?

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    batpig

    Chris -- A couple of points.... Audyssey only forces you to re-run if you ADD a speaker.  Deleting a speaker doesn't disable MultEQ as Nick stated above.

    More to the point though.... why would deleting a subwoofer force a re-run?  Isn't the filter for each speaker calculated independently?  For example, if the FR/FL are detected to have a -3dB point of, say, 37Hz, won't the Audyssey filter correction taper off at that point regardless of whether a SW is detected in the system during auto setup?

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    Chris Kyriakakis

    Sorry I wasn't clear.  Yes, there is no need to run it again if you remove the sub.  You will only need to after you add it back, which how I interpreted Nick's original question.

  • 0
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    batpig

    thanks Chris!  good to see you on the job early on a Sunday morning :)

  • 0
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    pepar

    ... overflow jousting from you-know-where ... ;)

  • 0
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    Katz, Noah

    Hi Chris,

     

    "... there is no need to run it again if you remove the sub.  You will only need to after you add it back..."

     

    Why would that be, if it's the same sub (not that Audyssey has a way of knowing that)?

     

    I've changed config from subs to none and back and as far as I can tell the original  Audyssey settings were retained.

     

    I was able to run w/DSX, which I assume it wouldn't let me do if I needed to re-reun.

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    Chris Kyriakakis

    Hi Noah,

    If it knew it was the same sub there would be no problem, but it doesn't...

    In recent models, DSX can be turned on without running MultEQ first.  I don't know why anyone in their right mind would ever want to do that :-)

  • 0
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    pepar

    Those wacky licensees ...

  • 0
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    Katz, Noah

    "If it knew it was the same sub there would be no problem, but it doesn't..."

     

    Nor does it know it's not the same one.

     

    In any case, MultEQ stayed on after switching back and forth.

     

    And I don't think Audyssey should go that far trying to protect us against ourselves, which is futile anyway - it has no way of knowing if you disconnect speakers and replace them with different ones.

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