12
Headphones
Stereo headphones can he connected to the 3-pole jacks
marked PHONES on the left side of the front panel and the
program level can be adjusted by the VOLUME and
BALANCE controls. Two people can listen at the same time
if two sets of headphones are plugged in and you can avoid
disturbing other people in the room by switching the knob
SPEAKERS to OFF.
Headphone listening is very convenient for monitoring when
recordings are being made, particularly if microphones and
loudspeakers are in the same room because it avoids
"acoustic howling".
Some people also prefer headphones when listening to
music. They provide a more intimate listening experience
and difficulties associated with room acoustics are avoided.
But there are disadvantages, for example the whole sound
environment turns with the listener when he moves his head,
a feeling regarded by some people as unnatural. It is a matter
of personal taste.
Headphones today are mainly the moving-coil type and are
obtainable with impedances ranging from about 8 ohms up to
about 2000 ohms.
The impedance of the headphone jacks is 220 ohms and they
will accept any headphones with any impedance above 4
ohms. However, some caution may be necessary when
playing at high volumes, because some types of headphones
may be damaged by excessive power. The curve on the right
shows how maximum obtainable power varies with the
headphone impedance.
Headphones come in all shapes, sizes, and weights and are
largely a matter of personal preference. When buying
headphones it is wise to try them on and be aware that the
heavy, close fitting type may cause fatigue when used for
long periods.
Electrostatic headphones may be used on this receiver. They
are thought by some people to give crisper sound.
Remember to order headphones terminated in a 14" jack
plug. Occasionally the plug should be given a quick rub with
a soft cloth and a very small amount of vaseline.
Summary of Contents for TR-2075
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