Technical Specifications; Power Amplifier; Digital Signal Processing; Front Panel Indicators And Control Connections - Bose FREESPACE 4400 Owner's Manual

10.1 Power amplifier

Power output
Total shared power available for all channels: 400W
Maximum power per channel: 400W
Output configurations
70.7V or 100V nominal
Frequency response (@ 1 Watt)
20Hz to 20 kHz ±3 dB
Crosstalk
>70 dB @ 1 kHz
(Tested with AES 17 low-pass filter.)
THD
<1.0% (@ full rated power)
(Tested with AES 17 low-pass filter.)
Signal-to-noise ratio
>97 dB (below rated power, A-weighted)

10.2 Digital signal processing

Sample rate
44.1 kHz
A to D conversion
24-bit, 128x oversampling
D to A conversion
24-bit, 128x oversampling
10.3 Front panel indicators and
control connections
Amp output signal indicators
Green = Normal operation; Red = Fault condition;
Unlit = No signal
Source input signal indicators
Green = Good signal; Amber = Low signal;
Red = Signal clipping; Unlit = No signal
Other indicators
System Status: Green = Normal operation; Red = Fault
condition
Direct Input: Amber = Active bypass; Unlit = Normal
operation
Standby: Amber = Unit is in standby; Unlit = Unit is
active
10.4 Rear panel inputs, outputs, and
controls
Line level inputs
Type: Unbalanced dual RCA connectors internally
summed to mono
Sensitivity: –30 dBV to +17 dBV
Impedance: 25K ohms
Input Clip Level: +17 dBV
Mic level inputs
Type: Balanced Euroblock connectors
Sensitivity: –60 dBV to +17 dBV
Impedance: 1.36K ohms
Input Clip Level: +17 dBV

10.0 Technical Specifications

1
Direct input
Type: Balanced Euroblock connectors
Sensitivity: 0 dBV
Impedance: 10K ohms
Input Clip Level: +6 dBV
Sensing microphone inputs
Sensing Mic 1 - 4: Euroblock connector
Control connectors
Wall Plate Zone 1 - 4: RJ45 connector
Remote On/Off Input: 2-terminal Euroblock connector
PC Input: RS-232 connector
®
Creston
RS-232 control
Power amplifier outputs (70V or 100V only)
Amp Out Zone 1 - 4: Inverted 2-pin Euroblock connector
Audio outputs
Music on Hold/PBX Output: Euroblock connector
Aux Out/Control: Euroblock connector
Output configuration
70V or 100V: Switch
AC power consumption
60W or less at idle
200W with musical program
600W at maximum continuous rated power (1 kHz, sine
wave input) 70V or 100V mode
AC power requirements (±10%)
120 VAC/50-60 Hz; 220 VAC/50-60 Hz;
240 VAC/50-60 Hz; 100 VAC/50-60 Hz
Peak Inrush current
80A @ 120V/60Hz; 60A @ 230V/50Hz
Fusing/protection
100/120V: T6.30A, L250V; 220-240V: T3.15A, L250V
Size (H x W x D)
Product: 5.1" x 16.5" x 16" (130mm x 420mm x 406mm)
Shipping: 11.8" x 23.2" x 22.8"
(300 mm x 590mm x 580mm
Weight
Product: 31 lb (14.1 kg)
Shipping: 41 lb (18.6 kg)
Enclosure construction
Steel chassis designed for rack or shelf mounting
10.5 FreeSpace 4400 system serial
data commands
The table on the following page provides serial data commands
for controlling the FreeSpace 4400 system throught the serial
data port.
The serial port of your computer must be configured as follows:
Port speed . . . 57600
Parity. . . . . . . . None
Data bits . . . . . 8
Stop bits . . . . . 1
Flow . . . . . . . . None
Note: All specifications subject to change without notice.
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compatibility