Pultec-style passive EQ
Features
Hi Mid Band Controls: Frequency switch selects 4K, 8K, 12K, 16K, 20KCS / 16dB cut level
Mid Band Peak Controls: Frequency switch selects 1K, 2K, 3K, 4K, 5K, 8K, 10K, 12K, 16KCS, Bandwidth control, +14dB boost level
Lo Band Shelf Controls: Frequency switch selects 20Hz, 30Hz, 60Hz, 90Hz, 120Hz, -16dB cut level, +14dB boost level
All Frequency Select Controls are step switches
All Cut and Boost Level Controls and Bandwidth Control are continuous variable attenuators
Bypass switch
SPA690 all discrete legendary amp blocks
Differential balance input transformer
Balance output transformer
Double-wide module fits in standard 500 series rack slots configuration mechanically and electrically
Specifications
Input Impedance: 600 ohms balance
Output Impedance: 600 ohms balance
Frequency Response: +/- 0.5dB to 50KHz
Output Signal to Noise: -95dB or greater
THD + Noise: .01% @ 1KHz/+4dBu
