Product Name: Single power supply low-pass filter board, subwoofer front panel
Special reminder: This board is a subwoofer preamp board, directly connected to the speaker, it will not produce sound. It must be connected to a pure post amplifier board to make an active subwoofer to produce sound. The power of the pure post amplifier board is shocking according to personal needs. The degree of selection, the greater the power of the pure power amplifier, the more shocking the bass effect. The so-called low-pass filter board filters out the high-pitched part above the human voice, and retains the low-frequency part to amplify to increase the bass reproduction strength. Human voice and high-frequency instrument sound will not be heard during playback. Buyers must understand this knowledge to avoid not knowing how to use it after buying it.
Most subwoofer pre-boards on the market basically have dual power supplies. It is not very convenient for the majority of DIY enthusiasts. After all, a single power supply is easier to find. Under the premise of ensuring the effect, we launched a single power supply super bass front The board can share a power supply with the power amplifier board, which is very convenient for DIY.
Features of this board:
1. All components are selected from brand-new first-class products, the frequency adjustment capacitors are original Philips CBB capacitors, the adjustment potentiometers are Taiwan-made fully sealed type, and the input and output terminals are pure copper terminals, which is very convenient for wiring.
2. Dezhou NE5532 is selected as the op amp, and the IC socket can be replaced at any time, so you can feel the effects of different op amps and improve the playability.
3. The LED indicator is designed to monitor the power supply status in real time.
4. The PCB design of this board is simple and beautiful, and the wiring is reasonable, which makes this board have a very high signal-to-noise ratio and strong anti-interference ability. When there is no signal input, close to the speaker almost no noise can be heard.
The main parameters:
Power supply voltage: DC10-24V single power supply direct current
Frequency range: 22Hz-300Hz
Audio input: single channel or dual channel
Audio output: mono
PCB specification: 78x32mm, thickness: 1.6mm
PCB material: ultra-hard FR-4 glass fiber board
Net weight of finished board: 30g
Center spacing of plate fixing holes: 70x24mm, hole diameter: 3.2mm
Center distance between potentiometer axis: 32.5mm
Shipping list:
1 low-pass board, 2 random color plastic potentiometer caps
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