Studio Technologies 78 2004 - Manual (Page 38)

Issue 5, January 2004 Model 78/79 User Guide
Page 38 Studio Technologies, Inc.
for Surround
Specifications
Model 78 Central Controller
General Audio:
Frequency Response: 20 Hz-20 kHz ±0.2 dB
(down 0.5 dB @ 80 kHz), monitor outputs
Distortion (THD+N): 0.004%, measured at 1 kHz,
+4 dBu, monitor outputs
S/N Ratio: 90 dB, ref +4 dBu out, 20 Hz-20 kHz,
monitor outputs
Crosstalk: 80 dB, typical, ref +4 dBu in,
20 Hz-20 kHz, monitor outputs
Audio Inputs: 16, organized as two 8-channel
“7.1” inputs
Type: electronically balanced, compatible with
balanced or unbalanced sources
Impedance: 24 k ohms
Nominal Level: –12 dBV to +6 dBu, adjustable
Level Calibration: 15-turn trim potentiometers
Monitor Outputs: 1, 8-channel “7.1”
Type: electronically balanced, compatible with
balanced or unbalanced loads
Maximum Level: +27 dBu into 10 k ohms, +26 dBu
into 600 ohms
Bass Management—General:
Provides 12 dB/octave high-pass filtering for main
input channels (L, R, C, SL, SR, BL, BR). Factory
configured for –3 dB @ 80 Hz, nominal.
Provides 12 or 24 dB/octave low-pass filtering for
main input channels. Factory configured for –3 dB
@ 80 Hz, nominal, 24 dB/octave.
Bass management can be field disabled.
Main Input Channel High-Pass Filters: 7
Type: 2
nd order Sallen-Key; factory configured
for 12 dB/octave; field configurable for flat or
12 dB/octave response
Response: –3 dB @ 80 Hz, nominal,
12 dB/octave; field configurable
Main Input Channel Low-Pass Filters: 7
Type: 2
nd order Sallen-Key; 12 dB/octave;
field configurable for disabled or 12 dB/octave
response
Response: –3 dB @ 80 Hz, nominal,
12 dB/octave; field configurable
Secondary Input Channel Low-Pass Filter:
Type: 2
nd order Sallen-Key; 12 dB/octave
Response: –3 dB @ 80 Hz, nominal,
12 dB/octave; field configurable
LFE Input Channel to Subwoofer Output:
Overall Gain: 0 or +10 dB, nominal, switch
selectable
LFE Input Channel Low-Pass Filter:
Type: four cascaded 2
nd order Sallen-Key
sections; 48 dB/octave (8th order)
Response: –6 dB @ 120 Hz, nominal, field
configurable
Operation: switch selectable, on/off
Connectors:
Audio: 3, 25-pin D-subminiature female
Control: 2, 9-pin D-subminiature female
AC Mains: 3-blade IEC-type
Remote Control Inputs: 3
Type: +5 V logic, activates on closure to system
common
AC Mains Requirement: 100, 120, or 220/240 V,
±10%, factory configured, 50/60 Hz, 30 VA
Dimensions (Overall):
19.00 inches wide (48.3 cm)
1.72 inches high (4.4 cm)
9.58 inches deep (24.3 cm)
Mounting: one space in a standard 19-inch rack
Weight: 9.5 pounds (4.3 kg)