Well Google finally helped me out. I found the information I wanted from a PS article. I am posting for the next guy that needs the info.
IF YOU'RE TRAVELING IN AN UP-ARMORED M1114 HMWWV OR OTHER WHEELED TACTICAL VEHICLE WITHOUT HEARING PROTECTION, YOU ARE DAMAGING YOUR HEARING!
YOU MUST WEAR HEARING PROTECTION!
OF COURSE, WEARING SOME HEARING PROTECTION CAN KEEP YOU FROM HEARING THINGS YOU NEED TO HEAR, LIKE LIFE AND DEATH WARNINGS AND THE SOUNDS OF THE APPROACHING ENEMY.
THAT'S WHERE THE BOSE IMPROVED TACTICAL HEADSET (ITH), NSN 5965-01-521-0941, COMES IN.
THE HEADSET PROTECTS YOUR HEARING, BUT STILL LETS YOU HEAR WHAT NEEDS TO BE HEARD.
IT'S THE VITAL COMPONENT TO THE INTERCOM SYSTEM OF YOUR HMWWV AND, EVENTUALLY, OTHER LIGHT TACTICAL VEHICLES.
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THE HEADSET FITS OVER THE ADVANCED COMBAT HELMET (ACH) OR UNDER IT. OVER THE HELMET, IT CAN BE REMOVED WITHOUT REMOVING THE HELMET.
ADJUSTMENTS TO FIT EVERY HEAD ARE MADE WITH THE HOOK-AND-PILE STRAPS AROUND THE NECK AND OVER THE HEAD.
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ITS MICROPHONE ASSEMBLY IS REPLACEABLE AND CAN BE POSITIONED ON THE RIGHT OR THE LEFT.
IT'S LIGHTER THAN PREVIOUS HEADSETS AND THE EAR CUSHIONS ARE MORE COMFORTABLE.
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THE HEADSET PROVIDES HEARING PROTECTION THROUGH BOTH ACTIVE AND PASSIVE NOISE REDUCTION.
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WHAT DOES THAT MEAN?
IT MEANS A SNUG FIT ON THE HEAD AND EARS GIVES YOU PASSIVE NOISE REDUCTION ...
... AND THE ELECTRONICS GIVE YOU ACTIVE NOISE REDUCTION.
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THE HEADSET ALSO HAS A "TALK-THRU" CIRCUIT THAT LETS YOU DISMOUNT FROM THE VEHICLE AND HEAR AMBIENT SOUND IN STEREO AND HAVE A NORMAL CONVERSATION WITHOUT HAVING TO REMOVE THE HEADSET.
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THE CONTROL MODULE ON THE CABLE/MICROPHONE ASSEMBLY HAS A THREE-POSITION PUSH-TO-TALK SWITCH AS WELL AS THE TWO-POSITION TALK-THRU SWITCH.
THE PUSH-TO-TALK SWITCH IS SPRING LOADED AND POSITIONED ON THE FACE OF THE CONTROL MODULE IN THE CENTER.
THE SWITCH CAN BE HELD MOMENTARILY IN THE PUSH-TO-TALK POSITION OR IT CAN BE "LATCHED" IN THE LIVE INTERCOM POSITION.
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THE TALK-THRU SWITCH IS LOCATED ON ONE SIDE OF THE CONTROL MODULE. THE BATTERY COMPARTMENT WITH ONE AA ALKALINE BATTERY IS ON THE OTHER SIDE.
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THE CONTROL MODULE ALSO HAS AN M42 GAS MASK MICROPHONE CONNECTION.
PREVENTIVE MAINTENANCE ON THE HEADSET MEANS KEEPING IT CLEAN, DRY, STORING IT OUT OF HARM'S WAY, AND CHECKING FOR CRACKS AND OTHER DAMAGE.
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HERE ARE THE REPAIR PARTS THAT ARE AVAILABLE FOR THE HEADSET ...
Part NSN
Headband one 5965-01-525-1695
Headband two 5965-01-525-2635
Outer ear cushion 5965-01-525-1694
Inner ear cushion 5965-01-525-2016
Microphone harness 5965-01-525-2019
Microphone shield 5965-01-525-1684
Electrical headset 5965-01-525-1685
Cable assembly 5995-01-525-1680
Electrical cover 5930-01-525-1675
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