Parametric Equalizer Empress Effects ParaEq MK2 Deluxe Starts where ParaEq Leaves off and adds Q controls and High and Low Shelving. Q ControlsThe Q is a measurement of how much the EQ band affects a range of frequencies. Narrow Q: Knob fully clockwise. This setting is best for attacking problems. For example, if an acoustic instrument is feeding back, a narrow Q allows you to cut the offending frequency without affecting frequencies around it. Medium Q: Knob at 12:00. This is great for general tone shaping. Most equalizers in instrument amplifiers are medium Q. Try this setting and cut in 3 the 300Hz - 400Hz range if your amp sounds a little muddy, or boost in the 1kHz - 5kHz range if your guitar is a little dark. Wide Q: Knob fully counter-clockwise. Wide settings are best for transparent changes to the signal. With a wide Q, boosting around 100Hz can add warmth and boosting in the 3kHz range can add definition, all while retaining your instrument’s tone. High-Pass and Low-Pass Filters High-pass and low-pass filtersare used to remove specific bands of frequencies from the sonic spectrum. These bands are determined by the filter shape and the cutoff frequency at which the filter is set. High-Pass Filter: The high-pass filter attenuates frequencies below the cutoff frequency set by the knob, which ranges from 10Hz to 330Hz, by 12dB/octave. Low-Pass Filter: The low-pass filter attenuates frequencies above the cutoff frequency set by the knob, which ranges from 1.5kHz to 22kHz, by 12dB/ octave. Shelving Filters: Shelving filters are used to boost or attenuate a specific band of frequencies from the sonic spectrum. 4 The filter shape and amount of boost/attenuation determines the filter’s frequency response. shelving filters are extremely gentle and musical sounding baxandall filters. Low Shelf Filter: Very gentle slope that boosts or attenuates frequencies below 200Hz by up to15dB, depending on the knob position. High Shelf Filter: Very gentle slope that boosts or attenuates frequencies above 1kHz by up to 15 dB, depending on the knob position.
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