Specifications
AA24/AA25 Series Single User Audio Controller 
SM18 Installation and Operation Manual 
April 14, 2012 Rev: 5.00  Page 1-1 
ENG-FORM: 800-0100.DOTX 
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Section 1.0 Description 
1.1 Introduction 
This manual contains information on the AA24/AA25 Series Single User Audio Controllers. All derivatives 
will be covered by manual supplements which can be obtained from AEM as required. Information in this 
section consists of purpose of equipment, features and specifications. 
1.2  Purpose of Equipment 
The AA24/AA25 series single-user Audio Controllers support one headset per box. Connection to other users 
in the system is made through the ICS Tie line. The small size and extensive radio and ICS functions make 
this unit an excellent choice for multi-station aircraft. 
The AA24/AA25 series systems provide full boom-mic transmit and ICS functions for the user. The front panel 
controls permit user adjustment of frequently needed signals, such as intercom audio level, VOX threshold, 
and individual radio receive levels. Internal adjustments set default values for direct audio level and artificial 
side tone. 
1.3  Features 
The AA24/AA25 series single-user Audio Controllers support one headset per box. Connection to other 
users in the system is made through the ICS Tie line. The small size and extensive radio and ICS 
functions make this unit an excellent choice for multi-station aircraft. 
The AA24/AA25 series systems provide full boom-mic transmit and ICS functions for the user. The front 
panel controls permit user adjustment of frequently needed signals, such as intercom audio level, VOX 
threshold, and individual radio receive levels. Internal adjustments set default values for direct audio level 
and artificial side tone. 
1.4 Specifications 
1.4.1 Electrical Specifications 
Power Supply:
    Voltage   28Vdc (reverse and over voltage protection) 
 Current  400 mA Max
    Lighting   28 Vdc @ 160 mA 
    Headset Power Phone output is nominal 600 Ω load 
    Short circuit protected 
          Typical 200 mW into headset 
          David Clark H10-30/40 series recommended 










