If the DSP does not work and there is no sound ?

Case 1: Check whether the positive and negative terminals of the power supply, ACC, and high-level input and output are connected correctly. Case 2：Please check whether the input and output speaker wires are grounded or short-circuited.

If the DSP does not work and there is no sound ?

Case 3：The positive ACC line must reach 12V. Check if the ground wire is correct and secure. Case 4：Check if the wiring harness fuse is burnt out. Case 5：Please check whether the input mode is selected correctly

DSP device can’t control or adjust sound?

Case1: Check the host DSP switch, you need to turn on the Manual/PC control (ON). Case2: Please check if the LCD controller is switched to the correct mode. (Note that incorrect mode will result in no sound)

If the sound is low, electric current sound, crackling sound, impact sound, or abnormal sound occurs, please check these

Case1: Are the sound volume, sound frequency, etc. settings too high Case2: Change the installation location to avoid power interference.

When the DSP is connected to an external device and there is an impact sound

Case1: Please disconnect the REM line of the external amplifier, connect the REM line of the added device to the DSP "REN" line, and switch the DSP (ACC and HOST) switches at the same time and try once each.

A80 DSP Amplifier Car Audio Digital Signal Processor,31-Band EQ,2- Channels Input,8-Channels Output,Support Manual/PC/APP/Controller/USB car Equalizer (A80+Wired-Controller)

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