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Aguilar DB680 Technical question

Discussion in 'Amps and Cabs [BG]' started by djshawn47, Mar 4, 2004.

  1. Im trying to understand the Parametric EQ on my DB680 and need help.

    I understand that the first set of knobs are for frequency sweeps for low to high mids and for high mids to highs and the second set of knobs are for cut and boost.......

    but what are the bandwith knobs for???

    would someone explain in laymans terms....and tell me how this affects the sound or tone????

    Ive read the manual several times and fiddled with the knobs but i cant figure it out.....
  2. metron

    metron Supporting Member

    Sep 12, 2003
    The bandwidth surrounds the frequency selected for boost or cut. If you saw bandwidth on a graph it would look like a symmetrical hill with the frequency you select in the middle. This knob makes the hill surrounding the frequency selected either wide or narrow. Narrow bandwidth gives boost/cut in a range closer to the frequency selected and vice versa with wide bandwidth. I cant really describe how that changes the sound though.
  3. Jim Dombrowski

    Jim Dombrowski Gold Supporting Member

    Jan 16, 2002
    Colorado Springs, CO
    Another try. Let's say you selected 1.5 khz with the frequency control.

    If you turn the bandwidth control fully clockwise, you would be cutting to boosting the only 1.5 khz frequency.

    If you turn the bandwidth control fully clockwise, you would might cutting to boosting from 1.2 khz to 1.8 khz (a wider frequency range surrounding the selected frequency.

    I don't know the exact specs on this, so I'm just giving you an example of narrow vs. wide bandwidth.
  4. David Wilson

    David Wilson Supporting Member

    Oct 14, 2002
    Lower Westchester, NY
    to add to all the good stuff already said...

    To generalise... you'll use a wider bandwidth to boost, and a narrower bandwidth to cut (i.e. for slap or to get rid of some pesky mid frequencies in a troublesome room)
  5. Well done. Its a bit like trying to describe a spiral staircase without using your hands.

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