RU-DA4D RADIO DESIGN LABS, RU-DA4D Datasheet - Page 2

• Manufacturer Part Number: RU-DA4D
• Description: RDL AUDIO DISTRIBUTION AMPLIFIER, GAIN: -15- DB, FEATURES: INPUT AND OUTPUT CONNECTIONS ARE MADE VIA A FULL SIZE SCREW TERMINAL STRIP, ON THE REAR PANEL AND ACCEPT ANY COMBINATION OF BALANCED OR UNBALANCED WIRING CONFIGURATIONS
• Manufacturer: RADIO DESIGN LABS

RACK-UP
Model RU-DA4D
Audio Distribution Amplifier
AUDIO INPUTS: Connect Channel A balanced audio to A+, A-, and GND. Connect Channel B unbalanced audio to
B+ and GND; connect B- to GND. If unit is being used for stereo, connect Channel B similarly to A.
MONAURAL OPERATION: Connect Channel A as described above. Then connect the two terminals labeled
MONO together. Do not connect B input. The audio now connected to A input will appear at all 8 outputs.
AUDIO OUTPUTS: Connect balanced audio to the desired output(s) (Channel A 1 through 4 and Channel B 1
through 4). For balanced wiring, connect the conductors to the + and - terminals. The ground is typically connected
to the equipment that the RU-DA4D is feeding. If it is desired to connect the ground, use the nearest GND terminal.
For unbalanced wiring, connect the positive lead to the output + terminal; connect the shield to the nearest GND
terminal. Do not connect the output - terminal to the shield or GND terminals.
POWER CONNECTION: Connect the positive side of a single-ended 24Vdc power source to the +24VDC terminal.
Connect the ground return from that supply to the adjacent GND terminal. Power supply and circuit grounds are
common. Available RDL supply is purchased separately.
TYPICAL PERFORMANCE
Inputs (2):
Input Impedance:
Gain:
Frequency Response:
THD+N:
Headroom:
Noise:
Crosstalk Between Channels:
CMRR:
Indicators:
Power Requirement:
Dimensions:
891-0053M
®
SERIES
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287
U.S.A. [phone], [phone]; Fax: [phone]
Radio Design Labs Technical Support Centers
Line Level (+4 dBu nominal)
10 kΩ Balanced or Unbalanced
-15 dB to +18 dB (each output adjustable)
20 Hz - 20 kHz (+/- 0.5 dB into 600 Ω)
10 Hz - 20 kHz (+/- 0.5 dB into 10 kΩ)
< 0.010%
> 18 dB (above +4 dBu Input or Output)
< -85 dB (below +4 dBu Output)
< -70 dB (10 Hz – 5 kHz); < -60 dB (10 Hz – 20 kHz)
> 50 dB (100 Hz)
1 LED Per Channel for Audio Present (Audio Input > -20 dBv)
24 to 33 Vdc @ 120 mA, Ground-referenced
Height:
Length:
Depth:
1.7 in.
5.8 in.
2.0 in.
15.0 cm
4.3 cm
5.1 cm (case only)
Installation/Operation
EN55103-1 E1-E5; EN55103-2 E1-E4
Typical Performance reflects product at publication time
exclusive of EMC data, if any, supplied with product.
Specifications are subject to change without notice.