Question about AudioSource EQ-200 Home Equalizer

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Have you isolated the problem to the equalizer only? By that, I mean remove it from the signal chain and bypass it completely. That's the first thing.Does the system make noise without it in? If dead quiet when removed then you go to step two.
If the noise returns when the EQ is reconnected, you should eliminate crappy or broken cables, connectors etc. Replace with a known good working set. Still there? Buzzing infers either a ground issue or some kind of power supply problem, only if the previous stuff is eliminated. Do this first, then ask again.

Posted on Nov 23, 2007

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What is the purpose of a graphic equalizer?

A graphic equalizer is designed to allow the user to tailor the music to his or her personal hearing. Obviously not everyone hears frequencies the same. As you get older or are exposed to loud noises you lose sensitivity to certain frequencies. To compensate for that you can boost or cut the fequencies being played through your system. Originally the graphic equalizer was designed to make corrections to bad recordings and deficiencies in the recording medium of the time. Now they are used more to compensate for hearing deficiencies. To understand how an equalizer works you need to understand that ideally the normal person can hear about 20 khz of audio when they are young and have perfect hearing. Probably more realistically they can hear 20 hz to 15 khz. Enter the equalizer. All sounds are heard differently according to the intensity of the frequency. If your hearing is bad, say down 10db at 10khz, with an equalizer you could boost 10khz by 10db and make up for it. An equalizer contains filters which breaks the audio spectrum into bands. Could be 3, 6, 10, 15, 20 or more. The more bands the more the equalizer costs but the more corrective power you have. We have equalizers with 64 bands. . The numbers on the sliders are the frequencies your equalizer can boost or cut. Keep in mind that they are the center frequency and will effect frequencies on either side for about a 10db range. So you can cut/boost frequencies at 50hz (very low), 200hz (low but still bass), 800hz (low to mid range), 3.2khz (range of speech), and 12.8khz (high frequency). The best way to observe how your equalizer works would be to play something and adjust one control at a time to see what it does. You will notice a difference. Then it basically becomes a project to adjust the unit to the way that you like to hear your music. You like bass, boost the low frequencies. Like the highs, boost them. Give it a try.


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on Feb 14, 2010 | Equalizers & Crossovers

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You have a sent and return

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