10-24V subwoofer preamp board pre-finished board subwoofer preamp board single power supply low-pass filter board

Name: single power low-pass filter board, subwoofer preamplifier board
Special Note: This board is a subwoofer preamplifier board, directly connected to the speaker will not sound, must be connected to the pure rear amplifier board into an active subwoofer in order to sound, pure rear amplifier board power according to the individual needs of the degree of shock to choose from, the greater the pure rear amplifier power the more shocking the bass effect. The so-called low-pass filter board is to filter out the treble part of the human voice above, keep the low-frequency part of the amplification to improve the bass playback strength, playback will not hear the human voice and high-frequency instrument sound. Please make sure that the buyer understands this aspect of knowledge, in order to avoid the buyer does not know how to use.
Most of the subwoofer preamplifier board on the market is basically a dual power supply, the majority of DIY enthusiasts is not very convenient to use, after all, a single power supply is easier to find, under the premise of guaranteeing the effect, we introduced a single power supply subwoofer preamplifier board, you can share a set of power supplies with the rear amplifier board, DIY is very convenient. This board features: 1, all components selected new first-class products, frequency adjustment capacitor selection of the original Philips CBB capacitors, adjusting the potentiometer selection of Taiwan's fully sealed type, the input and output selection of pure copper terminals, wiring is very convenient. 2, the choice of Texas NE5532 op-amps, soldered IC seat can be replaced at any time op-amps to feel the effects of different op-amps to enhance the playability. 3, the design of the LED indicator light Real-time monitoring of power conditions 4, the board PCB design is simple and beautiful, reasonable wiring, making the board has a very high signal-to-noise ratio, strong anti-interference capability. No signal input when close to the speaker can hardly hear the noise

Main parameters: power supply voltage: DC10-24V single power supply direct current
Frequency range: 22Hz-300Hz
Audio input: mono 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
Board fixing hole center spacing: 70x24mm, hole diameter: 3.2mm potentiometer axis center spacing: 32.5mm