The following information will help you make the most of your new equalizer:
General Tone Control
The graphic equalizer is a very useful device for general tone shaping because it is intuitive and easy to adjust. The visual reference provided by the slider position gives an approximate idea of the frequency response generated, with the lower frequencies on the left and higher frequencies on the right. To use the power of an equalizer effectively, you need to translate your idea of the tone you want to produce into a range of numerical frequencies. This is simple after a little practice. Here are a few references which are useful for starting points:
Very low bass (the “wind” in a kick drum, almost felt as much as heard -40Hz-80Hz.
The low register of a male voice - 200Hz
The low register of a female voice - 350Hz
Lower midrange (“warmth” frequencies) - 400Hz-1KHz
Upper midrange (“harshness”, snare drum “bite”, “hot” sound) -2.5KHz-4KHz.
Sibilance (“sss” sounds, cymbal “sizzle”) - 8KHz-15KHz.
Try using these starting points as a guide when you want more or less of these types of sounds. Adjust by ear from there. It is always a good idea to remember that a little equalization usually works out much better than a lot, and that there are many audio problems which can not be solved with equalization alone.
A graphic equalizer can be used to provide some control over moderate feedback problems but does not have enough flexibility or resolution to handle severe situations. You will achieve the best results when you can eliminate one or two feedback points by setting one or two sliders for no more than a 6dB cut. Often you can find a feedback point by boosting sliders in succession to determine which frequency ranges contain the feedback modes, and then cutting those ranges. Be very careful in this process to avoid explosive feedback and possible system and hearing damage. If you find feedback points with many equalizer bands, cutting every band may not help (all you will do is reduce system gain). The combination of a graphic equalizer for tone control and a parametric equalizer for feedback control is highly recommended.
Console Channel Equalization
Many mixing consoles provide only simple equalization for individual channels. If your console has channel inserts, you can patch your graphic equalizer into a channel requiring more precise equalization.
Large Room Equalization
Large rooms tend to suffer from multiple reflections with long time delays, long reverberation times, and “ring modes”, all of which lead to reduced intelligibility and a generally “muddy” sound. As sound travels long distances through the air, high frequencies are attenuated more than low frequencies. In general, large rooms benefit from some low-frequency roll-off, high-frequency boost, and attenuation of ring mode frequencies. As in the case of feedback control, a graphic equalizer can help reduce an isolated ring mode or two, but a tunable narrow-band equalizer such as a parametric is more effective here.
- Dual 31 - Band Graphic Equalizer
- Two Channels 31 Band 1/3 - Octave
- Adjustable High - Pass Filter Circuit 12Hz to 285Hz
- Switch - Selectable Cut or Boost of Either 6db or 15db
- 10 Segment Two Color Led Meter Displays Indicating 0 VU to 4dBu
- XLR Input and Output Connections
- 1/4” TRS Input and Output Phone Jacks
- Switchable Power Supply 110 - 220 VAC
Physical Dimensions and Weight
Weight: 11.5 Lbs / 5.25 kg
Dimension (LxHxD): 19” x 5.25” x 8” / 483 x 133 x 203 cm
Package Dimensions and Weight
Weight: Lbs / kg
Dimension (LxHxD): ” x ” x ” / x x cm
UPC Barcode: 686811894696
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