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 Date: 

 22 

Apr 

04 

     Subject:  

MicroAudio Programmable Equalizers 

  

 

From about 1988 through approximately 1995 Altec Lansing sold programmable 
signal processing products made by MicroAudio.  The following pages are “road 
maps” of the models sold under the Altec Lansing name.   
 
You can visit 

www.microaudio.com

 and buy programmers (hardware) for setting 

up the products listed on the following pages.  The 8553B could be programmed 
using the dedicated MicroAudio programmer.  In addition it had a PA422 interface 
and could be programmed directly from a computer using a RS232-to-PA422 
adapter.   
 
Two models, 8431A and 8432A, were programmed only from a laptop computer.  
They could be ordered with a PA422 or RS232 interface.  The PA422 models 
require PA422-to-RS232 adapters.  I can supply the software for these units.   
 
 
 
 
 
 
      Regards

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