What exactly does the rolloff do in the PRE block?

Discussion in 'Discussion' started by Dave_5150, Jul 2, 2019.

  1. Dave_5150

    Dave_5150 Senior Member

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    Is it doing the same as the low cut in the cab block of other modelers and DAW's, or does it do something different as it's before the amp? Jace suggests setting it at 250Hz which sounds good to my ears buts it's far higher than what is usually recommended for low cuts on those other products (typically 80Hz-150Hz).
     
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  2. Jace Nuzback

    Jace Nuzback Senior Member

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    It just rolls off low frequencies BEFORE the amp block.
    On certain amp models too many low frequencies before
    the amp block make things boomy and undefined.
    Rolling off those low frequencies before the amp block
    keeps everything sounding nice and clear.
    250Hz is a good place to start. Especially playing in a band.
    This keeps your guitar from fighting for the same frequencies
    as the bass and the kick drum. I don't go lower than 125Hz.
    This depends on your guitar, pickups and playing style.
     
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  3. Dave_5150

    Dave_5150 Senior Member

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    Thanks Jace, and yep definitely agree that staying out of the way of a congested low end live mix is good for guitar.

    Any tips for the roll off for the BE and HBE models please. They're based on amps with a lot of bottom end which I'm struggling to find a balance with between too boomy and not enough bottom end to sound authentic to the BE100 amp.
     
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  4. TreyB

    TreyB New Member

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    Evening Gents,

    Could someone please instruct / direct me in the science of Parametric EQ applications? My musical method of madness is progressive and death metal, (Though I'm a Blues, Classically rooted, bottom of class student). When faced with using the Para EQ, I feel as though one must have Dr. Who on speed dial. So. That being said, I'd most kindly appreciate input / guidance from you epic Bards out there.

    Many thanks,

    Trey
     
  5. Jace Nuzback

    Jace Nuzback Senior Member

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    Trey,
    Parametric EQ is referred to as the PEAKING EQ mode in the AmpliFire.
    The benefits of parametric EQ are that you get to select a ANY frequency
    and boost or cut the level of that frequency. The Q allows you to determine how many frequencies
    are affected above and below your selected frequency. A narrow Q affects less
    frequencies above and below, while a wider Q affects more frequencies above and below.
    Each of the PEQ blocks can also be assigned PRE the AMP block or POST the AMP block.

    While the parametric EQ and ALL of the other PEQ modes in the AmpliFire are valuable tools,
    I almost never use them. I use the PRE EQ Low Cut to cut low frequencies PRE the AMP block,
    as well as the AMP and CAB block parameters to dial things in and that's really all I need.
    The GRAPHIC EQ is much faster to make smaller over-all adjustments if you need it POST AMP block.
    The GRAPHIC EQ is also great to use like a boost and assign to a foot switch for solos.
    Rather than use an overdrive boost, some times I like to use the GRAPHIC EQ pre the AMP block
    to boost high mids and overall level to drive the AMP block instead.

    All of those other EQ tools are invaluable for mixing, but I find them to be overkill for dialing
    in guitar tones. But they're there if you need them! Experiment and see if you find them useful.
    Cheers,
    Jace
     
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  6. TreyB

    TreyB New Member

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    Jace,

    Thank you for taking the time to reply! I appreciate your guidance and will most certainly apply it.

    Thanks again,

    Trey
     
  7. Jace Nuzback

    Jace Nuzback Senior Member

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