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THX subwoofers
TABLE OF CONTENTS
1. SAFETY INSTRUCTIONS ................................................................................................ 3
2. INTRODUCTION ..............................................................................................................4
3. WHERE TO PLACE YOUR SUBWOOFER ..................................................................... 4
4. OPERATION WITH THX COMPONENTS........................................................................ 4
CONNECTING THE SUBWOOFER TO A THX CONTROLLER........................................................... 4
TESTING THE SUBWOOFER (THX)..........................................................................................................6
5. CALIBRATING THE SUBWOOFER (THX)......................................................................6
OPERATION OF THE "LOW PASS FILTER" AND "BASS LEVEL" SWITCHES ....................................... 6
OPERATION OF THE "BASS EQ" SWITCH (THX) .................................................................................... 6
SETTING SUBWOOFER LEVEL (THX) ...................................................................................................... 7
USING TWO SUBWOOFERS (THX) ..........................................................................................................7
6. OPERATION WITH A NON-THX PROCESSOR.............................................................. 7
OPERATION OF THE "LOW PASS FILTER" SWITCH ............................................................................. 7
OPERATION OF THE "BASS EQ" SWITCH............................................................................................... 8
OPERATION OF THE THE "BASS LEVEL" SWITCH................................................................................. 8
WIRING WITH A NON-THX PROCESSOR OR PREAMP.......................................................................... 8
USING THE SUBWOOFER WITH THE M&K HP-80 OR VF-80 HIGH-PASS FILTERS ......................... 10
TESTING THE SUBWOOFER (NON-THX).............................................................................................. 11
SETTING SUBWOOFER LEVEL (NON-THX).......................................................................................... 11
USING TWO SUBWOOFERS (NON-THX) .............................................................................................. 11
7. SATELLITE/SUBWOOFER PHASING TEST ................................................................12
8. FINE-TUNING THE PLACEMENT OF YOUR SUBWOOFER .......................................13
SPECIAL METHOD FOR PLACING THE SUBWOOFER........................................................................ 13
9. USE OF SPIKED FEET ..................................................................................................14
10. TROUBLESHOOTING ...................................................................................................14
IF YOU NEED TO REPLACE THE EXTERNAL FUSE ............................................................................ 15
11. IF YOU NEED SERVICE ................................................................................................16
12. SPECIFICATIONS ..........................................................................................................16
13. CABINET MAINTENANCE ............................................................................................16
WIRING DIAGRAMS
FIGURE 1 ONE SUBWOOFER TO A THX CONTROLLER.................................................... 5
FIGURE 2 TWO SUBWOOFERS TO A THX CONTROLLER................................................. 5
FIGURE 3 ONE SUBWOOFER TO A SURROUND CONTROLLER (NON-THX) ..................9
FIGURE 4 TWO SUBWOOFERS TO A SURROUND CONTROLLER (NON-THX) ...............9
FIGURE 5 ONE SUBWOOFER TO AN AMP OR PREAMP (NON-THX)..............................10
FIGURE 6 TWO SUBWOOFERS TO AN AMP OR PREAMP (NON-THX)...........................10