2.1 Channel Front Board Low-pass Filter Frontboard Subwoofer Tone Board HI-FI Low-pass Circuit Board

Feature Product name 2 0 full tone 0 1 bass low pass filtering front boardChip model NE5532 78M12Input voltage DC12 30V AC9 20VFrequency range 20 20KHz for full tone 20 200Hz for bassFeatures 2 0 0 1 volume controllable bass frequency phase adjustableDimensions 98 x 40 x 23mmWeight 50gNote This product cannot be directly connected to the speaker It needs a power amplifier to drive the subwoofer The performance strength of the bass has a lot to do with the frequency response of the amplifier and speakers and the cabinet Package includes 1 x2 0 full tone 0 1 bass low pass filtering front board Note The amplifer board does not includes