STICK-ON SERIES
®
Model ST-DA3
Distribution Amplifier
ANYWHERE YOU NEED...
•
•
•
•
•
Audio Distribution with Up To 3 Outputs
Balanced or Unbalanced Input and
Outputs
To Bridge a Line for Local Distribution
Distribution with Impedance Conversion
Distribution with Gain or Loss
You Need The ST-DA3!
The ST-DA3 is part of the group of versatile STICK-ON products from Radio Design Labs, featuring the
advanced circuitry for which RDL products are known. The durable adhesives provided with the ST-DA3
permit permanent or detachable mounting. Numerous mounting accessories, brackets and rack-mount
chassis are optionally available to facilitate any system design.
APPLICATION: The ST-DA3 allows the bridging of any audio line, adjusting the gain, and driving up to
three outputs. Each output is driven by a separate amplifier, and is isolated from both the input and from
the other outputs. The circuit design allows the input to accept either balanced or unbalanced signals, of
either high or low impedance. And each output may be connected either balanced or unbalanced. The
ST-DA3 features all dc circuitry that produces the unsurpassed pure clarity for which RDL products are
known! Some features are:
•
•
•
•
•
•
•
•
•
•
•
•
•
No capacitors in the audio circuits
Functions as an electronic transformer
Provides isolation, gain, and three outputs
True dc amplifiers produce impeccable audio
Ultra-low distortion
Ultra-low noise
Output level adjustable from OFF to 20 dB gain
Ample headroom at operating level
Recessed multi-turn gain trimmer for precise control
Input and outputs are RF bypassed
Full operation in either high or low impedance circuits
Outputs are short circuit protected
Positive connections via barrier block
Wherever a distribution amplifier is needed, the ST-DA3 is the ideal choice. Use the ST-DA3 combined
with other RDL RACK-UP®, STICK-ON, TX™, or FLAT-PAK™ series products as part of a complete
audio/video system.
RDL • P.O. Box 1286 • Carpinteria, CA., USA 93014 • (805) 684-5415 • FAX (805) 684-9316 • http://www.rdlnet.com
STICK-ON SERIES
®
Model ST-DA3
Distribution Amplifier
TYPICAL PERFORMANCE
Input:
10 kΩ balanced or unbalanced bridge
Input Signal:
-18 dBu to +28 dBu (for +4 dBu output)
Output:
300 Ω to drive low or high impedance,
balanced or unbalanced lines
Output Signal:
Balanced:
+4 dBu nominal;
Unbalanced:
6 dB below balanced line level
Number of Outputs:
3
Frequency Response: 10 Hz to 30 kHz (+/- 0.25 dB)
10 Hz to 45 kHz (+/- 0.50 dB)
THD+N:
0.030% high impedance load
< 0.015% 600 Ω load (10 Hz to 30 kHz)
891-0012M
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.
Power Bandwidth:
Noise below +4 dBu:
Headroom:
Gain:
CMRR:
Indicator:
Power Requirement:
Dimensions:
85 kHz
<-75 dB high impedance load
< -80 dB 600 Ω load
18 dB (above +4 dBu)
Off to 20 dB gain (adjustable)
-65 dB @ 60 Hz
Red LED power indicator
24 to 33 Vdc @ 70 mA, Floating
Width:
3.00 in.
7.62 cm
Depth:
1.55 in.
3.94 cm
Height:
0.65 in.
1.65cm
Radio Design Labs Technical Support Centers
U.S.A. (800) 933-1780, (928) 778-3554; Fax: (928) 778-3506
Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287