Electro-Voice BK-42 User Manual
Specifications and Main Features
- Frequency Response Range: 20Hz to 20kHz +/- 1dB (Input Mic and Output any + EQ flat)
- Total Harmonic Distortion Percentage: 0.05 % at ( + 4 dBu, 20 – 20KHz; 0.1 at 24 Adbu
- Hum and Noise Levels: Noise equlvalent Input dBu –128 (mic input) 79 dB (mixer, S/N ratio)
- Crosstalk Ratio and Tolerance: –65 dB for 1 kHZ crosstalk ratio and tolerance for maximum level and minimum tolerance of 40dB; All combinations 20 to 20,000 Hz
- Voltage Gain: 3 dB; Mic In to main out 86 dB; Mic In to sub and monitor out 75db; line in to main out 60, line in to sub monitor out 50dB
- Microphone Impedance: Low and maximum input level balanced +6dbu, input impedance 4400ohm at 1kHz
- Line Impedance: High with maximum input balanced +24dBu, input impedance of 60 k ohm.
- Amplifier: input channel EQ of 15dB at 100hz of shelving, peak and dip sweeping of 350 – 5000 Hz with 15dB at 10 kHz
- Headphone: With an output spacer of 20mW into 8 ohm and 50-15kHZ at +2dB frequency response
- Phantom Power Supply: 48 volts and attached pins with source impedance at 6.6kOms
- Power Requirements: 100, 120, 220, or 240 V ac, 50/60 Hz, 40 watts (120 V ac)
Frequently Asked Questions
Q: Can you tell us what is the frequency response of the BK-42 series mixer?
A: Frequency response is 20-20,000 Hz ±1 dB.
Q: How much total harmonic distortion can I expect from the mixer?
A: Harmonic distortion of the mixer is <0.05% at 4dBu and <0.10% at 24 dBu.
Q: What signal to noise ratio is it designing the mixer with?
A: The signal to noise ratio is 79 dB when measured directly with masters at nominal with all inputs off.
Q: Can this mixer's microphone inputs apply the phantom power needed?
A: Yes, it applies 48 V dc phantom power supplied externally at pin 2 and 3 in the microphone input connector.
Q: What is the upper limit of the level of the input that can be applied on line inputs?
A: The compensating input for the line inputs is +24 dBu (12 volts).
User Manual
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