The ST-MX2 is used in any application requiring mixing of two audio sources. A mic may be mixed with a line-level music source. Two mics may be mixed to feed the mic or line level input of a power amplifier. A mic or professional +4 dBu line-level mono sum is possible. It may be used to convert mono line-level signals from consumer to professional, or from professional to consumer format. It may also be used as a microphone preamplifier, or conversely to adapt unbalanced or balanced line-level signals into the microphone input of other equipment.
| Inputs (2): | Selectable mic or line |
| Input Level for +4 dBu output: | Mic: -45 dBu to -65 dBu; Max input -28 dBu
Line: -18 dBV to +10 dBu; Max input +22 dBu |
Input Impedance:
Input or Output Configuration: | Mic: 200 Ω; Line: 20 kΩ bridging
Balanced or unbalanced |
Outputs (2):
Output Impedance: | MIC and LINE
150 Ω (mic or line) |
| Frequency Response: | |
| Mic: | 25 Hz to 50 kHz (+/- 1 dB) |
Line:
THD+N: | 10 Hz to 30 kHz (+/- 0.25 dB) |
| Mic: | < 0.05% 25 to 20 kHz |
| Line: | < 0.005% |
IMD:
Output Level: | < 0.004%
Mic: -45 dBu; line: +4 dBu |
| Headroom: | Mic Input: >22 dB (rel. -50 dBu)
Mic Input: >32 dB (rel. -60 dBu)
Line Input: >18 dB (rel. +4 dBu)
Output: >20 dB (rel. +4 dBu) |
| Noise (below +4 dBu): | Mic: <-70 dB (150 Ω source, 50 dB gain)
Mic: <-80 dB (200 Ω source, 50 dB gain)
Line: <-90 dB |
| CMRR: | |
| Mic: | > 65 dB (50 Hz to 120 Hz) |
| Line: | > 45 dB (50 Hz to 120 Hz) |
| Power Requirement: | GROUND-REFERENCED
24 to 33 Vdc @ 60 mA |
| Ambient Operating Environment: | 0° C to 55° C |
