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SPM412e Stereo Preamp/Mixer Operation Manual Biamp Systems, 10074 S.W. Arctic Drive, Beaverton, Oregon 97005 U.S.A. (503) 641-7287

8 APPLICATIONS Restaurant/Lounge LRremote main miczonemainlimitthresholdtonestereomonooutin+10+10limitphtmpwr15 wattsclass 2 wiring50/60 Hz~27Vgnd

9 APPLICATIONS Boardroom LRremote main miczonemainlimitthresholdtonestereomonooutin+10+10limitphtmpwr15 wattsclass 2 wiring50/60 Hz~27VgndIR2IR3mu

10 BLOCK DIAGRAM SPM412e Block Diagram1LevelControlLogicBalVCALimitΣΣΣΣMaxLRMAINOUTPUTZONEOUTPUTVCAMono/StereoTreble& BassMicMuteMuteSwitchMatri

11 SPECIFICATIONS Frequency Response (20Hz-20kHz @ +4dBu): +0/-0.5dBTotal Harmonic Distortion (20Hz-20kHz @ +4dBu): < 0.1%Output Noise (20Hz-20kH

WARRANTY BIAMP SYSTEMS IS PLEASED TO EXTEND THE FOLLOWING 5-YEAR LIMITED WARRANTY TO THE ORIGINAL PURCHASER OF THE PROFESSIONAL SOUND EQUIPMENT DES

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1 SPM412e TABLE OF CONTENTS Front Panel Features Rear Panel Features Modifications Remote Control Applications Block Diagram Specifications

2 FRONT PANEL FEATURES main levelminmaxchannel select2134mutedownupbasstreblebalancezone levelmic levelSPM412e (1) (2) (3) (4) (5) (6) (7) (1)

3 REAR PANEL FEATURES LRremote main miczonemainlimitthresholdtonestereomonooutin+10+10limitphtmpwr15 wattsclass 2 wiring50/60 Hz~27VgndIR2IR3mutegn

4 MODIFICATIONS To access internal modifications, first disconnect power to the unit. Then lay the unit on a flat surface with the front panel faci

5 MODIFICATIONS MIC PRE/POST VCA: Internal jumpers are provided to assign Mic/Line Input signal to the Main Output pre or post VCA (Main Level). F

6 REMOTE CONTROL Infrared and wall-mount remote control is optional for the SPM412e. Remote control affects Channel Select and Main Level (plus mut

7 REMOTE CONTROL Translator: When the adjacent switch is depressed, the ‘hi’, ‘lo’, & ‘gnd’ terminals on the SPM412e rear panel Remote connect