API 565 EQ Filter Bank (500 Series Module) The 565 Filter Bank module has circuits that are true to the musical filters of the famed 215 module found in large format API consoles. Features Sweepable low-pass filter (500Hz to 20kHz, -6 or -12dB slope) Sweepable high-pass filter (20Hz to 400Hz, -12 or -18dB slope) Variable notch filter with adjustable Q (fully sweepable between 20Hz and 20kHz) Individual bypass switches for each filter section Transformer Balanced Output to +28 dBu Traditional API fully discrete circuit design Uses API 2520 and 2510 Op-Amps as well as the same discrete transistor buffers used in the famous 550 series equalizers Specifications Number of Bands Three Filter Frequencies Low Pass: 500Hz to 20kHzHigh Pass: 20Hz to 600HzNotch: 20Hz to 20kHz (3 selectable ranges) Filter Types Sweepable Shelf Low PassSweepable Shelf High PassAdjustable Active Twin-T Notch Notch Filter Q Variable from 0.95 to 15.3 Notch Filter Cut > 40dB at minimum Q setting Input Impedance > 20K Ohms, Balanced Output Impedance 75 Ohms, Transformer Coupled, Balanced Nominal Levels -15dBu to +15dBu Clipping Level +28dBu Frequency Response +.2, -.4, 20Hz to 20kHz THD+N 0.02% (+4dBu output @ 2kHz) Connector 15 position .156" sp. edge connector Power Consumption +/-16VDC, 100mA max at +24dBu out Size 1.5" x 5.25" x 6.75" Deep
