180MAx Performance
Frequency Reponse (at 1 watt from 4-ohm tap): 70 Hz to 19 kHz ±1 dB.
Frequency Response (at line out): 20 Hz to 20 kHz ±1 dB.
Power Bandwidth (at 4-ohm tap, 2 dB below maxium 1 kHz power): 50 Hz to 20 kHz with < 0.5% THD
Signal to Noise Ratio (ref. to rated power, master volume at minimum): 85 dB.
DC Output Offset: < ±5 mV.
THD: Less than 0.5% at rated power at 1 kHz.
Input Sensitivity (for full output at maximum gain):
Balanced mic inputs: 3 mV.
Balanced line inputs: 800 mV.
RCA connectors: 400 mV.
Isolated telephone input: 75 mV.
Input Impedance (nominal):
Mic: 400 ohms.
Line: 100 kilohms.
RCA: 50 kilohms.
Telephone: 600 ohms.
Crosstalk: –70dB at 1kHz.
Line Output Level (nominal): 1V into 10 kilohms.
Phantom Power: 15 VDC.
AC Line Voltages Available: 120V, 60 Hz. Line voltage tolerance +10%, –20%.
Operating Temperature/Humidity: 0° C to 40° C at 95% relative humidity (non-condensing).
Storage Temperature: –20° C to 85° C.
Front Panel Controls and Indicators
Power Switch: Pushbutton on-off switch.
Input Volume Controls: Four detented potentiometers with knobs.
Input 1: Microphone/line (switchable)/telephone.
Inputs 2 and 3: Line.
Input 4: XM Radio.
Tone Controls: Bass and Treble non-detented recessed potentiometers on each input channel. Bass ±10 dB at
100 Hz, Treble ±10 dB at 10 kHz.
XM Tuner Menu Button: Selects Direct, Preset or Category
mode.
XM Tuner Category Buttons: Scrolls through categories (rock, classical, news, country, etc).
XM Tuner Scroll Knob: Lets you scroll through channels and select them.
XM Tuner Display: LCD screen displays XM channel data (channel number, channel name, artist name, song title) 16 station presets and signal strength.
Power Indicator: Blue LED indicates power on.
Input Signal Presence Indicator: Green LED, one for each input channel, illuminates when input signal
exceeds –24 dBu (line) or –70 dBu (mic).
Output Signal Presence Indicator: Green LED illuminates when output signal level exceeds 100 mV (45 dB below full power) from the 4-ohm tap.
Clip Indicator: Red LED on output illuminates at threshold of audible distortion.
Output Volume Control: Detented potentiometer with knob.
Back Panel Controls, Connectors and Indicators
Reset Switch: Resets the circuit breaker that protects the power supply.
MOH 1V Level Control: Trim pot adjusts level for Music-On-Hold 1V output.
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