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HLX 4-input Analog Audio card 2006 slots 1 - 4 only

ITEM: 2174

  • 4 inputs on each 2174 card
  • Up to 16 inputs* on one HLX
  • Left/right analog audio
  • IR output for source control signals

Audio Only Sources
The 2174 adds four 2-channel analog audio sources to an HLX matrix configuration for a maximum of 16 sources* per system. The 2174 is the only source card that can be installed in slot 4, so even a configuration with 12 video sources can accommodate four* more audio sources. The IR output jack provides a control pathway to send IR signals to sources from remote zone receivers via the Cat 5 zone cables.

How to Order
Order the 2174 as part of a custom HLX Modular Matrix. Use the HLX Configurator to build a matrix system to your requirements. Call your Audio Authority Account Manager with questions or to order your custom HLX configuration by telephone.

  • Accepts 2-channel audio source inputs
  • Four source inputs per card
  • May be installed in slot 1, 2, 3, or 4* of main HLX chassis
  • IR output jack for source control signals

Using the HLX with 16 Source Inputs

The HLX can be configured for a maximum of 12 video source inputs with audio. Four audio-only source inputs may be added by installing a 2174 Source Card in the 4th slot as shown below. The 2174 is the only Source Card that can be installed in slot 4.


  1. The only Zone Card that can access the audio inputs from the 4th slot are 2278 audio-only Zone Cards.
  2. When using this configuration, the 2174 IR outputs do not function. Use an alternate control method.

Q: Can the 2174 be installed in any HLX card slot?
The 2174 must be installed in slot 1, 2, 3, and/or 4. It is the only source card that can be installed in slot 4.See guidelines and limitations for 16 source configurations.

Does the 2174 accept multi-channel digital audio?
No, the 2174 accepts only standard, stereo audio signals via coaxial (RCA) input.


Audio Source Card for HLX Modular Matrix
Model 2174

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Video Parameters
  • Input/Output Impedance: 75 ohms
  • Input Ground Isolation: No
  • 3dB Bandwidth: 150MHz
  • Input Coupling: AC
  • S/N Ratio: 61dB
Audio Parameters
  • Input Impedance: 75 ohms/50K ohms
  • Min Load Impedance: 75 ohms/10K ohms
  • Frequency Response: 10-50KHz
  • S/N Ratio: 72dB
  • THD+Noise: 0.03%
  • Crosstalk: 75dB
  • Connector Types (Input): RCA (analog audio)
  • Connector Types (Output): 3.5mm (IR)
  • Dimensions (HxWxD, inches): 1.5 x 14.75 x 6
  • Agency Approvals: ETL, FCC
  • Heat Output: 62 BTU/hr
In the Box
  • HLX input card

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