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-4
•
.
....
.
AEDfWHJTE
Il
L
1'
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.
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.
.
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,
i:
t~~~'
-
0
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II
,
AM
P
UFlER
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BlUE...,---
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Fig
. 2
ADAPTER
CIRCUIT
DIAGRAM
Fig.3
FREOUENCY
RESPONSE
CURVE
(B&K)
OPERATION
1. First,
be
sure
that
the
amplifier volume
is squelched
to
min·
~,~-
..
imum
level since a
.
..
..
-
sudden
input
of
ex·
cessive power can
iiI_'
:"-
_
....
U •
damage the driver
units
of
the headphone.
2.
Adjust
the
headphone so
that
the earpads
rest
snugly
over your ears. Space between the
EARPADS
pads and your ears
will
cause adverse effects
at
low
frequency response.
3. When the adapter
switch
is flipped
to
" Stereophones" position
the
circuit
to
the
headphone
will
be
completed.
Switch
on
the
amplifier
and
gradually
raise
the
volume
to
the
optimum
level.
Switching
from
phones
to
speakers or vice versa should
always
be
done
with
the amplifier volume
at
minimum
level.
The earpads used
on the AT705 are
designed and
con·
structed
to
comple·
ment
the
fine per·
formance
of
the
equipment.
They can
be
detached for cleaning by
firmly
holding the
frame
and
slightly
turning
clock·
ADDITIONAL
NOTES
1. Since
the
AT705
will
faithfully
transmit
the
performance characteristics
of
your audio
components,
it
should
be
noted
that
the
bet·
ter your equipment. better
will
be
the sound
quality
you
will
hear
through
the
headphone.
2.
The
input
cord
of
the adapter
may
be
lengthened by connecting
any
available
SPECIFICATIONS
AT705
speaker cord . However, the headphone cord
has
been
selected
with
precise consideration
to
the
total
capacitance and should
not
be
tampered
with
.
3. Please keep your headphone
away
from
heat.
direct
s
unlight
and mois
ture
at
all times
to
ensure long, satisfactory performance.
HEADPHONE
Type : Electret Condenser
Sensitivity: 98dS ±
2dS/SPL
at 1 kHz/
100V
, (
OdS
~0.0002
microbar
/V)
Max
.Sound Pressure Level : 110dS
SPL
Frequency Response: 10-25,000Hz
±3
dB
Total Capacitance: 1
OOPF
(incl. cord)
Weight:
250
grams (excl. cord)
Cord Length: 1.9 meters
REPLACEMENT
EARPADS :
Aud
io-Tech nica
Hp·15
wise
till
a " click " is heard. Wipe
with
a clean
cloth dampened
with
a mild detergent and
dry
before remounting .
If
the
foam cushion inside the pad has
deteriorated due
to
some reason, replace
the
entire earpad
with
a genuine
Audio
·Technica
replacement earpad, model HP15, available
from
your dealer.
ADAPTER
Primary Impedance:
4·16
ohms
Step-up
Ratio:
36dS
Distortion:
under
0.3%/lkHz
Rated
Input:
l.4V
RMS
Ma
x.
Input:
5V
RMS
Cord Length : 1.3 meters
Dimensions: H45 x
W77
x
D85mm
(exel. terminals &
switch)
Weight:
570
grams
• Specifications
are
subject to change witho
ut
n
01ice.
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