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Specifications

Brochure pdf
Manual PDF


Analog Distribution Amplifiers
ADA 2x8SH Analog DA
ADA 2x8SS Analog DA


Digital Distribution Amplifiers
DDA-1x8SH Digital DA
DDA-1x4SH Digital DA
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Radio Systems, Inc.

Radio Systems’ ADA-4x4b may be the best DA ever made. We've lowered the noise to a whisper at 102 dB below +4 dBm out with an internal toroidal transformer that dramatically reduces internal electrical interference fields. Distortion in the ADA-4x4b is so low that it is hard to measure as a result of low noise op-amps and a careful design of the output amplifiers.

• Versatile configurations- quad, stereo or mono
• Front panel individual output level sets
• Internal torroidal transformer
• Super-low noise and distortion specifications
• Individual rear panel removable I/O barrier strip connectors
• 110/220 volt - CE certified
• Front panel audio presence and overload LED indicators
• Also available: DA-2x4b with stereo and mono configurations

 
 


Specifications

Brochure pdf
Manual PDF


Analog Distribution Amplifiers
ADA 2x8SH Analog DA
ADA 2x8SS Analog DA


Digital Distribution Amplifiers
DDA-1x8SH Digital DA
DDA-1x4SH Digital DA

Specifications

ADA-4x4b, ADA-2x4b

Channels
4 inputs x 4 outputs (ADA-4x4b)
2 inputs x 4 outputs (ADA-2x4b)

Front Panel Indicators
Power, audio level illuminates at -24 dBm
(one per input channel), peak level illuminates at
+ 24 dBm (one per input channel)

Input Impedance: 40K ohms, balanced and bridging

Input Gain: 0 to +36 dB (16 dB, 26 dB, 36 dB
– jumper selectable)

Output Impedance: 60 ohms, balanced

Maximum Output Level: +25 dBm
(into 600 ohm load)

Frequency Response: +0/-.1 dB 20 Hz
to 20 kHz

Distortion: (thd + n): .002% 20 Hz to 20 kHz
(any output level into 600 ohm load)

Distortion: (SMPTE imd): .003%
(any output level into 600 ohm load)

Distortion: (dim) .002% (into 600 ohm load)

Noise: 102 dB below +4 dBm (full bandwidth into 600 ohm load)

Output Channel Isolation (crosstalk):
-105 dB (full bandwidth)

Dynamic Range: 123 dB

Headroom: 21 dB above +4 dBm output
(into 600 ohm load)

Common Mode Rejection: -50 dB (full bandwidth)

Dimensions: 19 inch (EIA rack mount) wide x 1.75 inches (1ru) high x 7.75 inches deep (with connectors)

Shipping Weight: 8 pounds

Who made my DA anyway? Over the 25 years that Radio Systems has manufactured these DA’s, there has been some “private labeling”.

If your DA says “Radio Systems” on the front, or “manufactured by Radio Systems” anywhere on the back - we made it. And regardless of when or whom you bought it from, we can service it or provide you any part you need. If your DA says “Audio-Metrics” or “Harris” on the front, we may have made it, as Radio Systems is one of several manufacturers who were contracted to make DA’s under these labels.

Again, check the rear panel to see if it has our name on the back, or call us and we’ll help you determine its “parentage”. Of course, the best way to get genuine Radio Systems is to specify a Radio Systems ADA-4x4b.

”Audio-Metrics” and “Harris” are trademarks of Harris Corporation,
Mason, Ohio.


 
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Radio Systems, Inc.
Combining the best of two worlds - Radio Systems' famouse ultra low-noise and low-distortion Audio Distribution Amplifiers are now available with StudioHub+ connectivity.

StudioHub+ provides instant plug-and-play RJ-45 stereo connections to DA inputs and outputs, speeding initial installation and simplifying changes and troubleshooting. Wire all connections with CAT-5 twisted pair or use pre-made standard Ethernet-style patch cords for additional wiring efficiency.

All "SH" model products are circuit optimized for CAT-5 connectivity performance. This means that the inputs use instrumentation amplifiers, for ideal differential input balancing, ensuring the units excellent crosstalk specifications. Outputs utilize "electronic transformer" floating circuitry allowing traditional transformer style (one leg tied to the ground) wiring to unbalanced sources with maximum output levels unaffected.
  • Stereo / Eight Output Configuration
  • StudioHub+ RJ-45 rear panel connectivity
  • Front-Panel L/R level sets
  • Internal low-noise torroidal transformer
  • Front-Panel audio presence and overload LED indicators
  • 110/220 Volt internal voltage selectable
DA-2SH
Click here for detail view

DA-28SH
Click here for detailed view
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Specifications

Frequency Response
+0, -/1dB / 20Hz - 20kHz

Distortion THD+N
.002% / 20Hz - 20kHz, any output level from +4dBm to +24dBm (with 600 ohm load)

Distortion IMD SMPTE
.003% any output level from +4dBm to +24 dBm (with 600 ohm load)

Distortion DIM
.002% any output level from +4dBm to +24 dBm (with 600 ohm load)

Crosstalk
-105dB / 20Hz - 20kHz

Noise
102dB below +4dBm output level unity gain measurement bandwidth 20Hz - 20kHz with 600 ohm input and output termination

Headroom
21dB aboive +4dBm output (with 600 ohm load)

Dynamic Range
123dB

 

Inputs - 1 Stereo
Input Type
Instrumentation Amplifier

Maxium Input
+28dBm

LED Audio
-24dBm input level audio present trip point

Input Indicators
+24 dBm input level audio overload trip point

Outputs - 8 Stereo
Output Type
"Electronic Transformer" floating output

Maximum Output
+25dB over 20Hz-20kHz

Maximum Gain
Jumper selectable for: 16dB, 26dB, or 36dB

CMRR
-50dB over 20Hz-20kHz

Output Impedence
60 ohms

Physical
19" wide x 1.75" (1 r.u.) high x 7" depth
48.3 wide x 4.4 (1 r.u.) high x 17.8 cm depth

Shipping
8 lbs. / 3.6Kgs
23" x 13" x 3" / 58.5 x 33.7 x 7.7 cm

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Specifications

Brochure pdf
Manual PDF


Analog Distribution Amplifiers
ADA 2x8SH Analog DA
ADA 2x8SS Analog DA


Digital Distribution Amplifiers
DDA-1x8SH Digital DA
DDA-1x4SH Digital DA
  Radio Systems, Inc.

Radio Systems’ ADA 2x8SS is the world’s most fully featured audio distribution amplifier. Employ it for transparent audio distribution with super low noise and distortion specifications.
Unique feature include full metering, headphone amplifier and two input switching actived by fully adjustable silence sense circuitry or rear panel remote control. This allows the ADA 2x8SS to act as an automatic studio switcher or fail safe air chain controller.

•Front panel stereo metering
• Built-in silence sensor
• Super-low noise and distortion specifications
• StudioHub+ / RJ-45 connectors
• 110/220 volt - CE certified
• Front panel input selectors and audio presence indicators
• Rear panel full remote control and silence sense trip time and audio threshold selection

DA-2SH
Click here for detail view

Specifications

Channels
2 inputs (stereo) x 8 outputs (stereo)

I/O and Remote Control Connectors
Shielded RJ-45
(audio connectors to StudioHub+ standard)

Front Panel Metering
20 segment/stereo
Segments: -20 to -1 Green
Segments: 0 to -2 Yellow
Segments: +1 to PEAK Red

Front Panel Controls and Indicators
Audio Selected Indicator: A On / B On / Auto
Audio Presence Indicator: A On / B On / Tripped
Audio Select Control: Auto / Trip to B / Reset to A

Remote Control Pins
Control inputs: Auto / Reset / Test
Status outputs: Auto / Trip / Input A

DIP Switch Settings
Trip and Return Time: 2 to 256 seconds, selectable
Silent Sense Gain: -34dBu to -16dBu, selectable

Input Impedance
40K ohms, balanced and bridging

Input Gain
0 to +36 dB (16 dB, 26 dB, 36 dB – jumper selectable)

Output Impedance
60 ohms, balanced

 

Maximum Output Level
+25 dBm (into 600 ohm load)

Frequency Response
+0/-.1 dB 20 Hz to 20 kHz

Distortion
(thd + n): .002% 20 Hz to 20 kHz
(any output level into 600 ohm load)

Distortion
(SMPTE imd): .003%
(any output level into 600 ohm load)

Distortion
(dim) .002% (into 600 ohm load)
Noise: 102 dB below +4 dBm (full bandwidth
into 600 ohm load)

Output Channel Isolation (crosstalk)
-105 dB (full bandwidth)

Dynamic Range
123 dB

Headroom
21 dB above +4 dBm output (into 600 ohm load)

Common Mode Rejection
-50 dB (full bandwidth)

Dimensions
19 inch (EIA rack mount) wide x 1.75 inches (1ru) high x 7.75 inches deep (with connectors)

Shipping Weight
8 pounds

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Untitled Document

Radio Systems, Inc. • 601 Heron Drive • Logan Township, NJ 08085 USA • Phone: 856-467-8000 • Fax: 856-467-3044