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T ABLE OF CONTENTS
PERFORMANCE SPECIFICATIONS.........................................................................................................................vi
Frequency Response Graphs
SAFETY PRECAUTIONS...........................................................................................................................................v
INTRODUCTION ................................................................................................................................................... 1
TECHNICAL DESIGN FEATURES............................................................................................................................ 1
FRONT & REAR PANEL VIEWS............................................................................................................................... 4
SCHEMATIC DIAGRAMS ....................................................................................................................................... 5
INSTALLATION
Location ........................................................................................................................................................... 9
Studio Installations ........................................................................................................................................... 9
Home Theater Installations ............................................................................................................................... 9
Input Switch ................................................................................................................................................... 10
XLR Wiring Configurations ............................................................................................................................. 10
OPERATION
Auto Turn-On/Sleep Mode ............................................................................................................................. 11
Input Sensitivity .............................................................................................................................................. 11
Low-Pass Crossover ........................................................................................................................................ 11
Phase Control ................................................................................................................................................. 12
AC Line .......................................................................................................................................................... 13
LED Indicator ................................................................................................................................................. 13
Break-In and Warm Up .................................................................................................................................. 13
Cleaning and Maintenance ............................................................................................................................. 13
SERVICE REFERENCE
PC Board Layout............................................................................................................................................. 14
Parts List ......................................................................................................................................................... 15
TRM10s/TRM12s Functional Block Diagrams ................................................................................................. 17
Input Circuit ................................................................................................................................................... 17
Mono Sum/Gain Circuit.................................................................................................................................. 17
Phase Control Circuit...................................................................................................................................... 17
Buffer/Gain Trim Circuit ................................................................................................................................. 17
Filter Circuits .................................................................................................................................................. 17
Class-G Trans•
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Amplifier .......................................................................................................................... 18
Soft Start Circuit.............................................................................................................................................. 18
Power On/Off Circuit ..................................................................................................................................... 19
Signal Sensing Turn-On Circuit....................................................................................................................... 19
Thermal Protection ......................................................................................................................................... 19
Circuit Calibration .......................................................................................................................................... 20
Amplifier Replacement ................................................................................................................................... 21
Woofer Replacement ...................................................................................................................................... 21
WARRANTY ......................................................................................................................................................... 22