[Subwoofer tuning]How to tune the car subwoofer how to tune the car subwoofer
How to tune the car subwoofer how to tune the car subwoofer strong>
Step 1: After installation, check the entire system first
Check the line connection (the most important thing is to check the positive and negative poles of the power amplifier Reverse connection)
The firmness of speakers, power amplifiers, etc.
Step 2: Charge the capacitor
Step 3: Set the crossover point according to the needs of the speaker crossover point.
Different speakers have different playback frequency ranges, according to these characteristics to set the frequency division point of the power amplifier, if the host has independent subwoofer signal output, we can choose the full frequency signal in the bass power amplifier.
Step 4: Gain adjustment
Adjust the gain of the host and power amplifier to the minimum position.
The new functions of the mainframe (including BAL, FAD, LOUND, etc.) are set to zero under normal circumstances.
Use a vocal CD as an audition disc.
Gradually increase the volume of the console until distortion is heard, then turn it back down until no distortion is heard, the volume of the console is fixed at this position.
Gradually increase the gain of the amplifier until you reach the desired volume, being careful not to create distortion.
Step 5: Detect the phase of the speakers, including listening to the positive and negative phase effects of the bass, (if the bass becomes weaker when the volume increases, it can be confirmed that the low frequency is reversed).
Step 6: Basic adjustment of car audio functions Let the customer sit in the driver’s seat and close the car door tightly
Choose an appropriate audition disc. The sense of layering is an advantage, especially suitable for reproducing large dynamic symphonies, popular songs (voices), classical music, etc. In a set of Lefu car audio, we can easily feel the clear details in the mid-high frequency. If there is a Lai Fu subwoofer in your installed system, then you can fully appreciate what a “Body” sense of pure bass is. Chunky but never sloppy. Note: No matter what kind of demo disc you use, please don’t turn up the volume too much.
Adjust the BAL and FAD options for the positioning of the sound field, so that customers in the car can experience the positioning of the sound field in the front, rear, left and right of the car, if the machine has SPS (in-car listening position selection) function, don’t forget to give a demo.
Sound processing After the sound field positioning function is demonstrated, we can perform various sound processing operations, such as BBE, SOUNDNESS, DSP sound field simulation, surround sound, LPS, etc.
Adjust the direction of the treble, and use the directional characteristics of the treble to adjust the sound effect.
