ASA 141
Passive Audio Summing Adapter with RCA Inputs and Balanced/Unbalanced Output
Key Features
Converts unbalanced stereo audio to balanced or unbalanced mono audio
Resistor network provides passive audio summing
Internal transformer provides balanced output and isolates signal from load to prevent ground loops
Compact design for easy installation into small spaces or behind equipment in a rack

 

The Extron ASA 141

  Model Version Description Part #    
ASA 141    RCA Input; Transformer Balanced    60-804-01


The Extron ASA 141 Audio Summing Adapter is a convenient, single-cable solution for combining two-channel stereo audio into a balanced or unbalanced mono audio signal. It is ideal for summing stereo signals for use in mono PA systems in churches, halls, arenas, stadiums, and other environments where stereo signals would result in cancellation. Because it is a small and passive device, the ASA 141 is especially useful in systems where power and space are limited.

The ASA 141 includes two 6 inch leads with male RCA connectors for stereo input signals and captive screw connectors for balanced/unbalanced mono audio output. It is designed as a 2 foot long adapter with a resistor network to properly sum stereo signals without signal loss or damage to source equipment.

Features

Specifications

ASA 111, ASA 121, ASA 131, ASA 141
Audio
   Gain 
      ASA 111, ASA 121 See the table below.  Tested with an unbalanced output and a 20k ohm load.
      ASA 131 See the table below.  Tested with a balanced output and a 20k ohm load.
       
      ASA 141 See the table below.  Tested with a 20k ohm output load.  Gain numbers are ±2 dB.
       
   Frequency response 
      ASA 111, ASA 121, ASA 131
       20 Hz to 20 kHz, ±0.05 dB
      ASA 141 with -10 dBV, +4 dBu, or +15 dBV input
       20 Hz to 20 kHz, -3 dB to +1 dB
   THD + Noise 
      ASA 111, ASA 121, ASA 131
       0.03% @ 20 Hz to 20 kHz at nominal level
      ASA 141 
         -10 dBV input 0.05%, 1 kHz, 1% from 40 Hz to 20 kHz
         +4 dBu input 0.05%, 1 kHz, 1% from 50 Hz to 20 kHz
         +15 dBV input 0.05%, 1 kHz, 1% from 80 Hz to 20 kHz
   S/N 130 dB at maximum output
Audio input
   Number/signal type 
      ASA 111, ASA 121, ASA 141
       1 stereo, unbalanced
      ASA 131 1 stereo, balanced
   Connectors 
      ASA 111 (1) 3.5 mm male stereo mini plug (tip-ring-sleeve)
      ASA 121, ASA 141 1 pair of male RCA (tip-ring)
      ASA 131 (1) 3.5 mm captive screw connector, 5-pole
   Impedance 
      ASA 111, ASA 121 22k ohms (with a 20k ohm unbalanced load, one input terminated);
4k ohms (with a 20k ohm unbalanced load, both inputs terminated)
      ASA 131 24k ohms (with a 20k ohm balanced load, one input terminated);
7k ohms (with a 20k ohm balanced load, both inputs terminated)
      ASA 141 5.4k ohms (with a 20k ohm balanced load, both inputs terminated)
   Nominal level 
      ASA 111, ASA 121 -10 dBV (316 mVrms)
      ASA 131 +4 dBu (1.23 Vrms)
      ASA 141 -10 dBV (316 mVrms) or +4 dBu (1.23 Vrms)
   Maximum level 
      ASA 111, ASA 121, ASA 131
       +24 dBu (12.3 V)
      ASA 141 +15 dBV (5.6 V)
    NOTE     0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
Audio output
   Number/signal type 
      ASA 111, ASA 121 1 mono, unbalanced
      ASA 131 1 mono, balanced
      ASA 141 1 transformer, mono, balanced/unbalanced
   Connectors (1) 3.5 mm direct insertion captive screw connector, 3 pole
   Impedance (with 50 ohm input impedance)
      ASA 111, ASA 121 1k ohms unbalanced
      ASA 131 2k ohms balanced
      ASA 141 3.3k ohms balanced (typical)
   Nominal level 
      ASA 111, ASA 121 -10 dBV (316 mV)
      ASA 131 +4 dBu (1.23 V)
      ASA 141 -10 dBV (316 mV) or +4 dBu (1.23 V)
   Maximum level 
      ASA 111, ASA 121 +24 dBu (12.3 V)
      ASA 131 +24 dBu (12.3 V)
      ASA 141 +15 dBV (5.6 V)
General
   Power Not powered
   Temperature/humidity Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
   Rack mount Can be attached to any flat surface with supplied Velcro®.
   Enclosure type Molded plastic
   Enclosure dimensions 
      ASA 111, ASA 121, ASA 131
       0.7" H x 0.7" W x 1.3" D
(1.8 cm H x 1.7 cm W x 3.4 cm D)
(Depth excludes the 24 inches long pigtail for ASA 121 and the 24 inches long single cable for the ASA 111 and ASA 131.)
      ASA 141 1.1" H x 1.1" W x 1.6" D
(2.8 cm H x 2.8 cm W x 4.0 cm D)
(Depth excludes the 24 inches long pigtail.)
   Product weight 0.2 lbs (0.1 kg)
   Shipping weight 1 lb (1 kg)
   Vibration ISTA 1A in carton (International Safe Transit Association)
   Listings UL, CUL
   Compliances CE, FCC Class A, VCCI, AS/NZS, ICES
   Warranty 3 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.
(7.51-083006-D3)

Diagram

Panel Drawing



© 2014 Extron Electronics. Specifications are subject to change without notice.