API Audio 565 Filter Bank

- 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

- Number of Bands: Three
- Filter Types: Sweepable Shelf Low Pass
- Sweepable Shelf High Pass
- Adjustable Active Twin-T Notch
- Filter Frequencies: Low Pass: 500Hz to 20kHz
- High Pass: 20Hz to 600Hz
- Notch: 20Hz to 20kHz (3 selectable ranges)
- 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