This item adopts NE5532 Front chip for for better noise performance and good output drive capability. It's suitable for high-quality and professional sound equipment, control circuit and telephone channel amplifier.

1, adjust the potentiometer selected Hermetically, inputs and outputs use pure copper terminals, wiring is very convenient.
2, selected NE5532, welded IC holder can always replace the amplifier, experience different effects to enhance playability.
3, design of the LED Real-time monitoring the power supply situation.
4, PCB board design simple and beautiful, reasonable wiring, making the board has a very high signal to noise ratio, strong anti-interference ability. when no signal input close to the speaker almost hear the noise.

Main parameters:

Power supply voltage: DC12V-24V DC single power supply
Frequency range: 22Hz-300Hz
Audio input: mono or two-channel
Audio output: monaural
PCB Size: 78x32mm, thickness: 1.6mm
PCB Materials: FR-4 ultra-hard glass plate
Finished plate net weight: 30g
Plate mounting holes center to center spacing: 70x24mm, hole diameter: 3.2mm
Potentiometer shaft center to center spacing: 32.5mm

Package included:1 x Low-pass Filter NE5532 (with 2 rotary potentiometer cap)

 

 

For DIY enthusiasts, now really inconvenient to use, after all, easy to find a single power supply, dual power to get up more trouble, to ensure the effectiveness of the premise, we have developed a single-supply low-pass filterplate can be directly and amplifier using a set of power sharing is very convenient, welcome everyone to buy, what are the strength of our school, and the use of very standards.

Performance parameters:
(A) innovative use of a single power supply and power amplifier board can share power, very convenient, the op amp using NE5532, welded op amp IC holder, easy to replace the op amp to enhance playability, and all are Philips CBB capacitance capacitors, potentiometers uses high-quality sealed units produced potentiometer.
(B) with a full-range signal to adjust the volume potentiometer, very convenient to 2.1 amplifier board preamp.
(C) The LED monitor real-time power status.
(D) Dual-panel design, and strive to simple signal transmission, signal to noise ratio is very high.
(E) Input voltage: DC10-24V.
(F) can be a single / dual-channel input and mono output.
(G) PCB ultra-hardness FR-4 fiberglass board, board size: 82x30mm, excluding protruding parts, thickness: 1.6mm.
(H) frequency adjustment range 22Hz-300Hz, this frequency range is not the human voice, so-called low-pass only low-frequency output, to be added after stage amplifier power amplifier board can be used. The intensity of low-frequency performance with power amplifier board and speakers match, please choose a different amplifier board and subwoofer (passive subwoofer) according to different occasions.

Package Included:
1x Low-pass Filter NE5532 Hifi Subwoofer 2.1CH Pre-Amplifier Preamp Board
4x Cables

 

Adopts NE5532 front chip for for better performance. 
High quality potentiometer contacts well, stable for audio output. 
Adjustment Types: 4 channels(treble+alto+bass+volume) 
12-24V AC dual power supply, wide input voltage. 
For the input part, uses dual RCA plug, audio contacts well and long life span. 
Suitable for high-quality and professional sound equipment, telephone channel amplifier. 

Specifications:

Working Voltage: 12-24V AC Dual Power(12V-0-12V 24V-0-24V) 
Power Consumption: 5W 
Front Chip: NE5532 
Input Interface: RCA 
Output Interface: 2.54-3P 
Number of Channel: Dual-channel Audio 
PCB Board Size: 10 * 60 * 23mm / 3.94 * 2.36 * 0.9in  
Weight: 63g / 2.23oz 
Package Size: 12.5 * 10 * 2.5cm / 4.92 * 3.94 * 0.98in 
Package Weight: 75g / 2.65oz 

Package List:

1 * NE5532 Stereo Preamp 
1 * Audio Cable