Very nice and fully functional STUDER 169 analog mixing console with 10 mic/line input channels and 2 master outputs. Each channel features 2 aux sends and a 3-band equalizer with a fully parametric mid band. The console comes with VU meter bridge and external power supply. The entire unit has been checked and is fully operational. All pots and faders move smoothly with no scratching noise. Faders and knobs have been serviced, and missing caps were replaced. Upon request, the entire console can be recapped. Please inquire for recapp pricing.
General Information
Voltages in dBu always refer to 0.775V (0 dBu = 0.775V).
Channel and master controls are set to -10 dB.
Line outputs are terminated with 600 ohms.
External sources have a source impedance of ≤ 2000Ω.
The specifications apply within the range of 40 Hz to 15 kHz.
The specified levels are measured using a continuous sine wave signal (0 VU = 6 dB below full scale level).
Levels
Microphone sensitivity: -61 dBu to -22 dBu
Line input sensitivity: -23 dBu to +16 dBu
Insert point level: -10 dBu
Output level, adjustable range: +6 to +15 dBu
Monitor and pre-fade listen level, unbalanced and unloaded: +6 to +15 dBu
Impedances
Microphone input impedance: ≥ 1.2 kΩ
Line input impedance: > 5 kΩ
Source impedance of the line outputs: ≤ 50 Ω
Frequency Response
Filter off: +0.5 / -1 dB
Low-cut filter 12 dB/octave, -3 dB: 75 Hz ± 5 Hz
High EQ, 20 kHz: ±15 dB
Low EQ, 20 Hz: ±15 dB
Presence filter, Q = 1, adjustable from 150 Hz to 7 kHz: 11 dB
Headroom
Max. mic input level for k3 = 1% at 40 Hz: -2 dBu
Max. line input level for k3 = 1% at 40 Hz: +23 dBu
Headroom before the channel fader (k-total = 1%): 30 dB
Headroom before the master fader (k-total = 1%): 25 dB
Max. level of line outputs, RL 200 ohms: +21 dBu
Noise
Noise values are RMS measurements with an equivalent noise bandwidth of 30 Hz to 23 kHz (Siemens U2033 or equivalent instrument).
Noise figure F of the microphone input, source impedance = 200 ohms: ≤ 5 dB
Signal-to-noise ratio at the master output, master fader closed: > 86 dB
One channel, input and master fader at -10 dB
Gain input/output = 1
without filter: > 83 dB
with filter (flat): > 80 dB
Distortion (THD)
+6 dBu input and output at 1 kHz: ≤ 0.1%
+6 dBu input and output from 40 Hz to 15 kHz: ≤ 0.2%
Crosstalk
Mono crosstalk: < -75 dB
Stereo crosstalk: < -70 dB
Power Supply 169/269
Switchable mains voltage: 100V, 120V, 140V, 200V, 220V, 240V ±10%
External power supply: 8.5... 24V DC max. 2.5A, inrush current up to 4.5A
Operating time with fully charged batteries 169: 4... 5 hrs
Operating time with fully charged batteries 269: 3... 4 hrs
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