Dual 32 Stereo Music Spectrum parameter :
Voltage: DC voltage 8-32V
Size: 120X35MM Current: 20mA (standby)
Display size: 82X22MM
hole size: 28X85MM
Connection method: Pre-amp or speaker positive

Adjustable sensitivity of LED 32-segment audio indicator

Overall size: 120X17MM

Display size: 82X10MM

Voltage: 8-24V

interface:

IN audio signal input (the signal is recommended to be connected to the front stage (the front end of the amplifier volume),and the rear stage (output end) should be considered for the treble, midrange, and bass. The effects of the three tones are different. It's different. For example, if you connect to the treble, you can't see the bass instrument sound, and if you connect to the bass, you can't show the voice of the character

GND: negative pole of power supply

VCC: Positive power supply


Dual 16 Stereo Music Spectrum parameter :
Voltage: DC voltage 8-32V
Size: 100X32MM Current: 20mA (standby)
Display size: 84X24MM
Connection method: Pre-amp or speaker positive

R－IN－Right channel

L－IN－Left channel

VCC－Positive power supply (between 5-30V)

GND power negative

Note: The mobile phone charger needs to directly connect the two tin points at the R position on the back of the board. The R power supply after connection can only be 5V-5.5V power supply. Remember not to use a power supply higher than 5.5V. This board is anti-reverse Wrong connection will not burn out.

Please note the characters on the back of the board for wiring

R-IN and L-IN can be used in association

The audio signal wiring has priority to the previous level (the previous level is the signal output by the computer or mobile phone),or it can be connected to the amplifier speaker wire (the connection between the amplifier output and the speaker) IN audio signal input (the signal is recommended to be connected to the previous level (the front end of the amplifier volume) , After connection (output terminal),the connection of the latter stage should consider the high pitch, midrange, and low pitch. The effects of the three tones are different. The left and right channels are different. For example, when connected to the high pitch, the bass instrument sound cannot be seen. Status, the voice of the character cannot be displayed when connected to the bass)