RadioDesignLabs RDL ST-EQ3 3 Band Equalizer-Line Level-by-RadioDesignLabs

Input:100 kΩ balanced or unbalanced bridging; line-levelGain:OFF to unity (adjustable, +/- EQ adjustment)THD+N:<0.030%; 0.010% typical (1 kHz flat response)CMRR: 60 dB (100 Hz)Frequency Response:Into 600 Ω:20 Hz to 22 kHz (EQ set flat; +/- 0.5 dB)Into bridging load:10 Hz to 22 kHz (EQ set flat; +/- 0.5 dB)Noise:<-80 dB (below +4 dBu)Center Frequencies:LOW Band: 80 Hz MID Band: 1 kHz HIGH Band: 30 kHzBandwidth at 3dB EQ:LOW Band: 20 Hz to 300 Hz MID Band: 200 Hz to 7 kHz HIGH Band: 3 kHz to 30 kHzPower Requirement:GROUND-REFERENCED, 24 to 33 Vdc @ 25 mAAmbient Operating Environment:0 C to 55 C

• The ST-EQ3 features a balanced bridging input, which may be connected unbalanced if desired
• The output driver is 150 Ω balanced, and is intended to drive unbalanced or balanced lines of 150 Ω or higher impedance
• Equalization is accomplished by three active circuits, each controlling a separate audio band
• These bands were carefully selected to yield a module that works effectively in a wide variety of systems
• Setup of the ST-EQ3 is assisted by a peak overload LED which indicates excessive pre or post EQ levels