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Professional Subwoofer Filter Preamplifier Board NE5532x8 Op Amp High/Low Level Input with Gain Adjustment
Description:
- The professionally designed subwoofer filter front-end board uses a full eight dual operational amplifiers to perform multiple filtering on the audio input, effectively removing vocals and providing you with a clean and rich low-frequency experience. The output part is dynamically amplified, resulting in a cleaner and more efficient overall effect, with a large and powerful dynamic. The operational amplifier circuit uses a ±15V power supply to ensure that the output level of the operational amplifier is sufficiently high. Equipped with NE5532 operational amplifier as standard, other operational amplifiers can be upgraded by oneself in the later stage, with high playability.
- The above figure shows the frequency response curves of the potentiometer with maximum and minimum rotation, which rapidly attenuate above 100Hz and filter out human voices. The advantage of maintaining high gain below 30Hz is to enhance the diving of the subwoofer, resulting in more pronounced low-frequency effects. Our subwoofer usually dives to around 40 Hz, and decays quickly below 40Hz, resulting in insufficient diving. If used in conjunction with a large caliber sealed speaker, it can significantly enhance bass diving, allowing the sealed speaker to also have deep diving, and it is clean and sharp without hitting the head. This sounds much better than a subwoofer with an inverted hole design.
Wiring Description:
- The power supply voltage is a single 18V AC power, with a power of 10W or more.
- Low level input consists of two sets of RCA, either connected to one or both sets.
- High level input is used for external power amplifier output.
- The audio output is connected to a high-power pure post amplifier to drive the subwoofer.
Specification:
- Standard operational amplifier: NE5532 x 8
- Frequency response: 20 - 100Hz
- Working voltage: AC18V
- Product size: 166 x 70mm
Package Included:
- 1 x Filter Preamplifier Board
