How to adjust the car stereo?

Adjust the audio host or power amplifier?

General-purpose car audio tuning method

Audio debugging after installation is as follows: 1. (However, if an equalizer is installed, please adjust the main volume of the equalizer to about 75%. )

2. Set the power amplifier. After installation, first turn down the volume of the power amplifier to "0". Frequency division point and other functions of power amplifier:

A. The cross-point switch of the front sound level amplifier is set in Qualcomm (Qualcomm or HP): the cross-point switch is set at 80HZ- 120HZ (generally, it is raised by 90HZ before being used as a reference).

B. The post-sound stage power amplifier is also set in Qualcomm (Qualcomm or HP): (omitted without the post-sound stage configuration) The cross-point switch is set between 200 Hz and 400 Hz.

C the crossover switch of the subwoofer power amplifier is set at the low-pass (or LP) crossover point switch between 80 Hz and 120 Hz (the subwoofer power amplifier is like the frontcourt power amplifier, and the crossover points should be consistent. If the front field power amplifier is higher than 90HZ, the subwoofer power amplifier must be lower than 90HZ. There can be no debugging below 90HZ and above 120HZ, otherwise some audio sounds will be missed, resulting in poor audio connection).

D, zero or turn off the EQ bass of all power amplifiers.

3. After completing the above preset actions, put a disc dominated by human voices, and then increase the volume of the host from zero to about 80%-90% (for example, the total volume of the Alpine host is 35 squares, then 90% is 3 1 square, and so are other brands. If the above volume is exceeded, the host may output distorted signals to the power amplifier, resulting in excessive input signals and damage to the infield speakers or super speakers. )

At this time, don't care if there is sound in the frontcourt and backcourt or the subwoofer! (Because some devices will produce larger and smaller gain effects, it is possible that any installed power amplifier will produce different volume even if the volume is zero, but the volume of the host is increased to 80%-90%. ) First, gradually increase the volume switch of the front-court power amplifier until the sound of the front-court horn is distorted, and then return the volume knob of the power amplifier to the half-hour scale (such as the hour scale of a clock). The above debugging action is to let the front speaker take the sound level as the main factor, and output the signal at the maximum volume of the host, so that the power amplifier can generate the maximum output power without distortion, and the front speaker can generate the maximum volume without breaking the sound, touching the bottom or even burning the voice coil, resulting in failure! After the volume debugging of the front sound field is set, adjust the host back to the normal listening volume, and then adjust the connection with the subwoofer in the next step. Gradually increase the volume switch of the subwoofer power amplifier until it can be properly combined with the sound of the front sound field, so that the subwoofer can hit the front of the dashboard or above the dashboard! If the subwoofer can't hit the front dashboard all the time, try to reverse the subwoofer line (the positive and negative lines are reversed), which may improve the performance. The subwoofer can't reach the dashboard when the volume is too low, and can't move forward when it is too big. It rings in the trunk! Finally, if there is a rear sound field amplifier, increase the volume of the rear sound field amplifier until the rear passengers can hear it clearly, but the front passengers can't hear the backcourt sound, so as to prevent the backcourt sound from being too loud and affect the frontcourt sound quality and sound field effect (remember! The referee sitting in front of the regular competition will deduct points from the sound field depth competition if he hears the sound of the sound field.