Harman Kardon 75+ Instruction Manual page 7

HEADPHONE JACKS
The stereo or 4-CH headphone receptacles located on the front panel of
your 75+
receiver will accept
any type of headphone. Stereo
phones come
with a single plug which should be connected
to the FRONT receptacle.
4-CH
phones come
with two plugs. Connect
the front plug to the FRONT receptacle
and
the back plug to the BACK
receptacle. The headphone
receptacles are
"ON" at all times. To listen only to your phones without having your speakers
on, merely set the SPEAKER switches on the front row of pushbuttons to ''OFF"'.
MAIN SPEAKER SWITCH
In order to hear any or all of the speakers connected fo your main system,
this switch must be depressed.
When in the '''ON"' position all speakers connected to the main system are
"ON". Should you desire to listen to stereo or 4-CH headphones alone, the
speakers can be turned off at your discretion.
REMOTE SPEAKER SWITCH
When in the ""ON" position all speakers connected to the remote system
are ''ON". Should you desire to listen to stereo or 4-CH headphones alone, the
speakers can be turned off at your discretion.
EXT DOLBY NR/TAPE MON 2 SWITCH
Dolby IN receptacles may be used as a 2-channel Tape Monitor provided
you are not using the Dolby Function.
TAPE MON SWITCH
CONTOUR SWITCH
FM MUTING SWITCH
HIGH CUT SWITCH
LOW CUT SWITCH
FUNCTION SWITCH
PHONO
Use these positions for all mono, stereo or SQ matrix records.