of the "P5" port on the back of the display panel:

● When the two solder joints are disconnected, the amplifier function is turned off. At this time, the system is equivalent to just a HIFI potentiometer, which only plays the volume adjustment function and has no amplification function.

● When the two solder joints are connected, the amplifier function is turned on. At this time, the system is equivalent to a 10x HIFI preamplifier.

You can easily set it up according to the actual situation.

of the "P3" port on the back of the display panel:

● When the two solder joints are disconnected, The memory function is turned on.

● When the two solder joints are connected, The memory function is turned off.

You can easily set it up according to the actual situation.

of the "J1" port on the back of the display panel:

● This port can add six buttons for control the volume / mute/input choose.

 

Volume display value description:

Minimum volume value: -96dB, maximum volume value: 0dB (NOTE: The minimum volume value has a "-" sign in front of it, and the maximum volume is 0.)

● This system uses a straight real decibel value for display. It is based on the international high-end power amplifier display scheme, and it is opposite to other volume display schemes. Its practical significance is the same.

 

Product description:

● VFD display screen

● STC12C5A60S2 main control CPU

● PT6312BLQ VFD display driver chip

● CS3310-CSZ audio processing chip

● 4 way stereo input selector, remote control. Can be operated manually

● -96DB to + 31.5DB volume remote control. Can be operated manually (With 0dB lock)

● Use 24C02BN chip to store memory.

● The MINI Infrared Remote Control makes it easy to adjust the volume, mute, on or off.

 

Coding switch operation method

Left rotary :volume -

Right rotary :Volume +

Short press : choose input

Press three seconds: off

Short press when standby: ON

Input voltage: AC 12V, current is not less than 0.5A. If you connect the power switch, the minimum current is not less than 1A.

VFD control board PCB Size: 168mm * 37mm

Main board PCB Size: 177mm * 59mm

 

NOTE: This is a finished board that is soldered and tested OK.

Package includes:
JUDA VFD Digital volume control finished board X1 (With all cables in the photo)
Plastic remote control X1 (No battery)