Studio Technologies 750 - Manual (Page 38)

Issue 3, May 1997 Model 750 User Guide
Page 38 Studio Technologies, Inc.
Model 750
Specifications
General Audio Parameters:
Frequency Response: 20Hz-20kHz, ±0.5dB,
stereo line in/main out 1
Distortion (THD+N): 0.04%, measured at 1kHz,
mic in/main out 3
S/N Ratio: 80dB, referenced to +4dBu, mic in/
main out 3
Connectors:
Mic/Line, Stereo Line: 3-pin XLR-type, female
(pin 2 high)
Main Out 3: 3-pin XLR-type, male (pin 2 high)
All Other Audio: ¼-inch 3-conductor phone jacks
AC Mains: 3-blade IEC-type
Mic/Line Inputs: 4
Type: balanced, transformer-coupled
Impedance: mic 1k ohms, line 9k ohms
Common Mode Rejection Ratio: 68dB @ 60Hz
(typical)
Level Range:
Mic: –70 to –10dBu; Line: –30 to +30dBu
Range specified to give +4dBu output level,
master level controls set to unity gain position
Microphone Power: +48V phantom-type
Low-Cut Filter: –3dB at 85Hz, 18dB/octave slope
Status LED: bi-color, signal present/peak
Pan Type: constant energy
Pan Attenuation: 60dB, nominal
Stereo Line Inputs: 2
Type: electronically balanced, direct-coupled,
compatible with balanced or unbalanced signals
Impedance: 24k ohms
Common Mode Rejection Ratio: 100dB @ DC
and 60Hz, 70dB @ 20kHz, 62dB @ 40kHz, typical
Nominal Level: +4dBu (–8 to +10dBu
acceptable)
Status LED: 2, bi-color, signal present/peak
Main Audio Bus Limiter/Compressor: 2
Type: single-knee, VCA-controlled, non-tracking
Threshold: +10dBu, nominal (6dB above
nominal output level)
Attack Time: 2mSec, nominal
Release Time: 100mSec, nominal
Slope: 5:1, nominal
Status LED: 2, limiter/compressor active
Outputs — Main 1, Main 2, AUX, Configurable,
and Setup Direct:
Type: electronically balanced, capacitor-coupled,
intended to drive balanced or unbalanced loads
of 600 ohms or greater
Source Impedance: 50 ohms, nominal
Nominal Level: +4dBu (Setup Direct Output
adjustable, range –2 to +10dBu)
Maximum Level: +27dBu into 10k ohms,
+26dBu into 600 ohms
Main Output 3:
Type: balanced, transformer-coupled, intended to
drive balanced or unbalanced loads of 2k ohms
or greater
Source Impedance: mic 200 ohms, line 170
ohms, nominal
Nominal Level: mic –36dBu, line +4dBu,
selectable
Maximum Level: +21dBu into 10k ohms
Monitor Output:
Type: electronically balanced, capacitor-coupled,
intended to drive balanced or unbalanced loads
of 600 ohms or greater
Source Impedance: 50 ohms, nominal
Nominal Level: –2dBu, with monitor level control
@ 100%
Maximum Level: +21dBu into 10k ohms,
+20dBu into 600 ohms
Headphone Output:
Compatibility: intended for connection to head-
phones with impedance of 100 ohms or greater
Maximum Voltage: 8Vpp, 100 ohm load