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GeckoFlex 8910ADA-SR Stereo Analog Audio Distribution Amplifier with Remote Gain

The 8910ADA-SR offers full-featured distribution of monaural or stereo analog audio signals. In stereo mode, there are four stereo outputs, and in monaural mode there are eight outputs. With this board, audio signals can be summed for monaural monitoring, swapped L to R, or phase inverted to fix upstream transmission problems. Featuring flat frequency response to maintain signal integrity, the 8910ADA-SR offers a wide range of gain and balance control options, including local board control (using paddle controls and a hard-wired potentiometer for fine adjustment of ±6 dB), Ethernet-connected Newton™ control panels, and web browser interface. The user-enabled audio presence detection feature generates SNMP traps that can be sent to our CommandCenter SNMP remote monitoring software, or other SNMP systems for mission-critical applications.

  • Stereo and monaural modes
  • Audio presence detection with SNMP reporting
  • Frequency response of 20 Hz to 20 kHz ±0.05 dB
  • Gain/balance level controls
  • Gain range from -20 dB to +30 dB set with remote controls or front edge paddle switch
  • Sum, swap, or invert signals
  • Max. output level +28 dBu
  • Hard-wired potentiometers via rear BNC connectors for ±6 dB fine gain and balance control in Local Mode
  • Input present (> -40 dBu) detection
  • Remote monitoring and control via Ethernet
Supported Chassis Types
GeckoFlex with 8900A-R GeckoFlex Audio rear board, Gecko audio chassis: 8900TX-A, 8900TF-A, 8900TFN-A

Power Rating
5 Watts – single slot

Impedance: 18 kΩ to 30 kΩ
Level: +30 dBu max.
CMRR: >72 dB, 60 Hz to 20 kHz

Number of outputs: Four balanced stereo outputs or eight balanced monaural outputs
Impedance: <50Ω balanced
Level: ≤+28 dBu
Level match between outputs: ≤±0.25 dB
Gain tracking between channels: <0.3 dB
Output to output isolation: >100 dB

Frequency response: 20 Hz to 20 kHz ±0.05 dB
THD: <0.05% @ 24 dBu
IM distortion:
<0.025% @ 24 dBu
Noise: –75 dBu max.
Crosstalk: >95 dB 20–20 kHz @ 0 dB
Overall gain range: –20 to +30 dB
Hard-wired potentiometer gain/balance range (local mode only): ±6.0 dB

User gain controls: Input gain, –12 dB to +30 dB, stereo/mono mode select
Operating temperature: 0° to 45°C
Humidity range: 0% to 90% non-condensing
Non-operating temperature: –10° to 70°C
Remote – SNMP alarm
November 25, 2013
Hillsboro, Ore., November 25, 2013 — Brazil's Canção Nova, a non-profit Catholic Community located in Cachoeira Paulista in the state of São Paulo, is upgrading its broadcast infrastructure with a range of Grass Valley® solutions including five Maestro™ branding and master control systems, five Concerto™ 64x64 routing switchers, five GeckoFlex™ signal processing systems, and six K2 Summit® servers for optimized live event workflows. The system will be live in November and span five locations.
November 12, 2013
Hillsboro, Ore., November 12, 2013 — Bank TV, a satellite broadcaster in the Ukraine, has launched a complete, end-to-end high definition (HD) news production solution from Grass Valley® to facilitate the smooth delivery of its 24/7programming. At the core of the broadcaster's new structure is GV STRATUS® nonlinear media production tools for enhanced production and a streamlined workflow. GV STRATUS is being used in tandem with EDIUS® multiformat nonlinear editing software and GV Edge™ Integrated Playout System with K2 Edge™ playout nodes for 24/7 playout. This deal with Bank TV builds upon the recent momentum generated by Grass Valley in the Ukrainian broadcast market as well as traction gained by GV STRATUS in the EMEA region.
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