Studio Technologies 68A 2005 - Manual (Page 38)

Issue 2, January 2005 Model 68A/69A User Guide
Page 38 Studio Technologies, Inc.
for Surround
Specifi cations
Model 68A Central Controller
General Audio:
Frequency Response: 20 Hz-20 kHz ±0.1 dB
(down 0.5 dB @ 60 kHz), monitor outputs
Distortion (THD+N): 0.03%, measured at 1 kHz,
+4 dBu, monitor outputs
S/N Ratio: 92 dB, ref +4 dBu out
Crosstalk: 78 dB, ref +4 dBu in
Audio Line Inputs: 16, organized as two
6-channel inputs and two 2-channel inputs
Type: electronically balanced, direct coupled
Impedance: 24 k ohms
Nominal Level: –12 dBV to +6 dBu
Input Level Control: 15-turn trim potentiometers
allow calibration over –12 dBV to +6 dBu input
range
Maximum Input Level: +27 dBu
Common Mode Rejection: 90 dB @ DC and
60 Hz, 85 dB @ 20 kHz, 60 dB @ 400 kHz (typical)
Monitor Outputs: 6-channel surround, 2-channel
stereo
Type: electronically balanced, intended to drive
balanced or unbalanced loads of 600 ohms or
greater
Nominal Level: unity gain, audio inputs to monitor
outputs
Maximum Output Level—Balanced: +27 dBu into
10 k ohms, +26 dBu into 600 ohms
Maximum Output Level—Unbalanced: +21 dBu
into 10 k ohms, +20 dBu into 600 ohms
Output Impedance—Balanced: 50 ohms
Level Control Method: laser-trimmed voltage-
controlled-amplifi er integrated circuits manufac-
tured by THAT Corporation
Attenuation Range: 72 dB, nominal, using rotary
level control
Bandpass Filter:
Type: created by cascading (connecting in series)
a high-pass and low-pass fi lter; each fi lter 2
nd -order
(12 dB-per-octave) Sallen-Key
Response: –3 dB@100 Hz and 5 kHz, nominal
Connectors:
Audio: 3, 25-pin D-subminiature female
Control: 2, 9-pin D-subminiature female
AC Mains: 3-blade IEC-type
Remote Control Inputs: 4, HCMOS-type logic,
“pulled up” to +5 Vdc using 10 k ohm resistors,
activates on closure to system common
AC Mains Requirement:
100, 120, or 220/240 V, ±10%, factory confi gured,
50/60 Hz, 100-120 V 0.4 A maximum, 220/240 V
0.2 A maximum
Dimensions (Overall):
19.00 inches wide (48.3 cm)
1.72 inches high (4.4 cm)
8.75 inches deep (22.2 cm)
Mounting:
One space in a standard 19-inch-type rack
Weight: 8.2 pounds (3.7 kg)
Model 69A Control Console
Application: operates in conjunction with Model
68A Central Controller
Power: provided by Model 68A Central Controller
Output Data: generates MIDI system-exclusive
messages
Connector: 1, 9-pin D-subminiature female
Dimensions (Overall):
7.2 inches wide (18.3 cm)
2.2 inches high (5.6 cm)
5.4 inches deep (13.7 cm)
Weight: 1.9 pounds (0.9 kg)
Specifi cations subject to change without notice.