SY SY-3A-40W Installation Manual Download Page 2

 SY-3A-40W 

www.sy.co.uk 

The SY-3A-40W is a 40W mono (summed stereo) Power Amplifier, with both 70V and 100V line speaker 
outputs, that can be used with many products such as SY-HD-3.5AD HDMI Audio De-embedder, or even as 
standalone amplifier. This amplifier also features a voice-over capability that will allow its use in 
presentation applications. 

Features 

 

Three  selectable line level inputs – two analogue audio and one fibre input 

 

Talk-over microphone input 

 

Talk-over microphone has three operating modes: 48V, MIC level, or LINE level  

 

Auto muting when no input signal present 

 

70V (US) or 100V (EU) line speaker output 

 

IR control to adjust the amplifier remotely 

(Optional) 

 

RS232 control for computer control 

 

Ducking function on MIC / LINE input 

Connectors and Controls 

 
 
 

Front 

 

 

Name

 

Description

 

Input Select 

Amplifier input 1, 2 or 3 selection 

Adjustment Select  

Selects the parameter adjustment for: 

MIC, LINE, BASS, TREBLE 

Decrease Button  



Press to decrease the selected parameter value 

Increase Button  



Press to increase the selected parameter value  

Mute Button 

Mute the Amplifier output 

 

 

Summary of Contents for SY-3A-40W

Page 1: ...SY 3A 40W SY Electronics Ltd Unit 7 Worrall Street Salford Greater Manchester M5 4TH United Kingdom Tel 44 0 161 868 3450 Fax 44 0 161 868 3459 www sy co uk Installation Guide 40W Power Amplifier...

Page 2: ...er microphone input Talk over microphone has three operating modes 48V MIC level or LINE level Auto muting when no input signal present 70V US or 100V EU line speaker output IR control to adjust the a...

Page 3: ...put 3 5 mm jack used with the IR key pad Speaker output connector 3 way terminal Output terminals for 100V UK EU or 70V US line speakers Safety Instructions To ensure reliable operation of this produc...

Page 4: ...et to LINE and then try the MIC setting if no sound can be heard even after adjusting the controls on the SY 3A 40W unit Once the two three position switches have been set the remaining audio sources...

Page 5: ...MIC Increase or decrease the MMIC LINE input volume LINE LINE Increase or decrease the selected line input volume BASS BASS Increase or decrease the bass response TREBLE TREBLE Increase or decrease th...

Page 6: ...volume 7xx xx is from 00 to 60 Volume of LINE 50 Direct setting of BASS level 8xx xx is from 00 to 08 804 gives flat response Bass of LINE 04 Direct setting of TREBLE level 9xx xx is from 00 to 08 90...

Page 7: ...SY 3A 40W www sy co uk Figure 1 SY 3A 40W Connection Diagram...

Page 8: ...contacting SY Technical Support 2 When calling SY Technical Support the following information should be provided Product name and model number Product serial number Details of the fault and any condi...

Reviews: