Boss Audio Systems HP32 - Manual (Page 5)

Installing or replacing headphone batteries
The wireless headphones use (2) AAA batteries (not included), which are located
in one of the earphone housings.
To replace the batteries, follow the diagrams below. To conserve battery life, please
be sure to turn off the headphones whenever they are not in use, even though they
will turn off after a short period of interrupted IR reception. If you expect the
headphones to be unused for several days, remove and store the batteries.
Insert two AAA type batteries (not
included). Be sure to note proper
polarity when Installing the batteries.
HP32 User’s Manual - page 4
Using the HP32 headphones with a BOSS AUDIO Monitor
Several BOSS audio video monitors include a wireless infrared transmitter. The
transmitter sends a high-quality stereo signal which can be received the HP32
wireless infrared headphones.
The infrared signal is emitted from the large dark lens on the front of the monitor
console. Best sound will be obtained if you sit directly in front of the monitor within
about six feet. If you choose to sit to one side of the monitor, you can expect good
reception within 35° to the right or left of the monitor.
HP32 User’s Manual - page 5