Description NE5532 Speaker Crossover Filter Two-Channel 2.0 Stereo Operational Amplifier Chip: 4 NE5532 Frequency Division Structure: Linkwitz-Rayleigh Filter Signal Input: Two-Channel 2.0 Stereo Input Frequency Division Slope: 12 dB/Oct. 12 dB (2nd Order) Audio Output: 6-Channel Output (Treble Left and Right, Midrange Left and Right, Bass Left and Right) Capacitor Type: Correction Capacitor Resistor: High-Precision Metal Film Resistor Filter Structure: High-Pass Filter, Low-Pass Filter, Band-Pass Filter Power Supply: Dual Transformer 9–12 V, do not exceed 12 V/25 W (use preamplifier). A small transformer like the one used in the module is sufficient; Do not use a large transformer. Module size: 99 mm x 96 mm x 19 mm (length, width, and height) Module weight: 73 g Standard crossover: (Highs 3288 Hz, Mids 3288 Hz, Bass 328 Hz) Due to different batches, there may be variations in appearance, color, and printing, but these do not affect use. Material: PCB Color: Black Package contents: 1 x Speaker crossover Only the above package contents, other products are not included. Note: Light reflections and different displays may cause the color of the item pictured to differ slightly from the actual product. The allowable measurement deviation is +/- 1-3 cm.