There is a fixed switch 0/180В° and a regulator 0В° вЂ“ 180В°. Phase controller вЂ“ is part of the advanced tuning вЂ“ changes the phase of the speaker. HPF вЂ“ cuts from the bottom, LPF вЂ“ cut from the top, Full/Flat вЂ“ filters are disabled. It is present in the case when the amplifier does not provide adjustment for each filter separately. In most cases, bass-boost is not needed and if you are beginner, then accept the rule of вЂњdo not touch bass-boost!вЂќ It can be used by experienced people to increase the frequency response shelf to pull dips at certain frequencies, but itвЂ™s a deep setting, and the effect does not always justify the risk. When using bass-boost chance to burn subwoofer rises as clipping occurs much earlier. Setting gain with a multimeter or oscilloscopeД«ass boost вЂ“ increases the volume at a certain frequency, usually at 40-45 Hz. When the sound has changed, stop and turn it down by 10%. When the sound of the tone signal has changed, stop and turn down by a couple of divisions (set the maximum volume limit to this value, if your radio has such feature). Set the gain to a minimum, turn on your sinus, and adjust the volume of the radio. Sinus or tone (in our case) вЂ“ tone of a specific frequency, changes in the sound of which you can easily hear. To set gain for the mid-bass amplifier, take 315 Hz. If you configure the subwoofer, use 40 Hz, if your body is configured above 40 Hz, or you have a closed box, then take 50 Hz. If you do not trust your ears and are afraid not to hear the changes in time, then use the more precise way вЂ“ with the help of the sinuses. Ask the assistant to slowly add the control of the gain until the emergence of new distortions, and hearing them, stop the rotation and turn it down by 10%. Adjust the volume on the radio 3/4 of maximum, hearing distortion in the sound of the subwoofer before вЂ“ stop and turn down the volume by a couple of divisions. Set the regulator to the minimum, and turn on the music you usually listen. Forget about bass-boost on the amplifier вЂ“ so before setting the gain, make sure that all of this was turned off! Having a good channel amp 4 ( check this), do not use the equalizer and various bass improvers. The lower the V вЂ“ the higher the sensitivity вЂ“ the louder the speaker will play and vice versa.

The fact is that the sensitivity is measured in Volts. Sometimes the value of Volt (V) indicated on the regulator can be misleading.

But letвЂ™s not get into the wilds, and letвЂ™s consider this setting from usefulness for the user. Gain вЂ“ is the adjustment of the input sensitivity of the amplifier to match the radio. Gain (sensitivity) is often confused with the volume, but this is not entirely correct. If possible, you can limit the tweeters to 20,000 Hz, but this is not necessary. Similarly, with the midrange, for them cut in the range of 1400-1600 Hz. If you have separate channels or even separate amplifier for tweeters вЂ“ HPF can be set in an area of вЂ‹вЂ‹3000 вЂ“ 5000 Hz, depending on the model, not to burn them.ДЄll these figures are approximate, for more accurate and safe values, study the characteristics of your speakers! Low pass filter, also known as LPF вЂ“ opposite of HPF and cuts off high frequencies, leaving the lower.ДЇor subwoofers, it is set in the area of 50-80 Hz depending on the type of design (closed box, phase inverter, etc.) to cut off frequencies for which the subwoofer is not intended. For mid-range speakers HPF is set in the region of 80 Hz, to remove the low-frequency range, for which the speaker is not designed and will not be able to play it. When setting up the subwoofer amplifier, set the control to about 20 Hz, to cut off the infrasound and not waste energy, as you wonвЂ™t hear it anyway. Hight pass filter, also known as HPF вЂ“ filters (cuts) the low frequencies, leaving high.

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