SOURCE: how to adjust treble and bass
At the lower left of the unit, just right of the power button is a button marked LD, with A-M below that. Push this button and the display will say BATT, then, in a couple seconds it will display 2 numbers. The left number is the bass and can be adjusted with the select arrows (left & right arrows). The right number is the treble and can be adjusted with the volume arrows (up & down arrows). If you push the LD button once more, it will display BAL, then 2 numbers. The left is the left-right balance & the right is the front-back balance. They can be adjusted in the same way with the arrow keys. Hope this helps someone.
SOURCE: Equalizer setting help
try to use the preset equalizer settings after which you can come back to the parametric equalizer and adjust to your own taste. no problem if you don't connect the subwoofer just make sure you set the hi-pass filter to off so that you will hear the full range to your speakers. but, I advice you to put a subwoofer. There is more dynamics to the lower freqs too. don't adjust the source level if there is no problem. take note the EQ of your head unit is a parametric equalizer. hope this helps while you read about parametric EQs.
SOURCE: where are the bass,treble,mids,high on a basic
Bass will be anything below 300Hz, mid will be 300Hz to 5KHz (Voice), above 5KHz will be Treble.
SOURCE: Thanks for the answer -
Depending on the design of the amplifier, Bass could be in the range of 20Hz to 200Hz, Mid Range could be between 400Hz to 2. 5KHz and Treble could be in the range of 5KHz to15-20KHz. When you adjust the Bass and Treble the Mid Range should not be effected, unless the amplifier tone filter has a broad band width. Keep in mind, what we hear is a derivative of many frequencies called harmonics. This means an instrument or vocal is not one frequency. It is a combination of many frequencies, which could be in the Low, Mid and High range. There is no easy way to answer this question because of the amount of variables, which exists. The variables are; amplifier design, speaker types and room acoustics. The amplifier has an electronic filter which will limit or boost a specific range of the frequencies in the audible sound spectrum approximately 20Hz to 20KHz. The speakers have a Cross Over which separates the Bass, Mid Range and High frequencies to the Woofer Mid Range and Tweeter speakers which could affect your frequency response. The Room Acoustics could absorb audio frequencies in furniture and curtains or echo of the walls. The most effective way to adjust your sound system is to use an audio spectrum analyzer and play white noise (all audio frequencies at the same amplitude) which sounds like static. Using the spectrum analyzer the visual graph of the white noise should be equal at the same amplitude throughout the audio spectrum. If it is not then you should adjust the equalizer ( Bass, Mid Range and Treble) to boost or limit the sound in that spectrum range. However, two or three adjustments will not adjust your sound system perfectly. You will need a parametric or graphic equalizer to archive optimum results. Once you have adjusted your system you will hear music how the audio engineers and musicians intended it to be heard. I hope I did not confuse you and did not over answer your question. However, I wanted to explain the adjustments so you can appreciate your sound system more than just adjusting the audio for your personal preference.
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