Technics RS-B655 User Manual

Tech
n
ical
Specifications
r
CASSETTE
DECK SECTION
Deck system
Track system
Heads
Rec/play
Erasing
Motors
Capstan
Reel table
drive
Recording system
Bias
frequency
Erasing system
Tape
speed
Frequency response
NORMAL
CrOz
METAL
Stereo
cassette
deck
4-track, 2-channel
Permalloy head
Double-gap ferrite head
Quartz direct drive
DC
motor
DC motor
AC bias
80
kHz
.
AC erase
4.8 cm/sec.
(17/aips)
2O Hz-18
kHz
2O Hz-16 kHz
(DlN)
2O Hz-18 kHz
20
Hz-17 kHz
(DlN)
20 Hz-19 kHz
20 Hz-18
kHz
(DlN)
74
dB
(CCtR)
66 dB
(CCrR)
56 dB
(A
weighted)
Wow
and
flutter
Fast forward and rewind times
lnput
sensitivity and
impedance
Mtc
LINE
Output voltage
and
impedance
LINE
HEADPHONES
r
GENERAL
Power
consumption
Power
supply
Dimensions
(WxHxD)
Weight
o.05%
(wRMS)
+0.15%
(DrN)
Approx. 90 seconds with C-60 cassette tape
0.25 mV/400O-10 kQ
60
mV/47 kO
400 mV/800O
125 mV/8O
(8O-600c))
21
W
AC
50
Hzl60 Hz,24OY
430x135x290
mm
('l
61
sA
e"
x
51/e"
x
1 1
1
3/gz"
)
4.9 kg
(10.8
lb.)
Note:
Specifications are subject to change
without notice.
Weight and dimensions are approximate.S/N
(signal
level:max recording level,
CrOz
type tape)
Dolby C NR on
Dolby B NR
on
Dolby NR off
Troubleshooting Guide
Before
requesting service
for
this unit, check
the chart below
for
a
possible
cause of the
problem you
are experiencing.
Some simple checks or a
minor adjustment on
your part
may eliminate the
problem
and restore
proper
operation.
lf
you
are
in
doubt about some of
the
check
points,
or
if
the
remedies indicated in the
chart
do not solve the
problem,
refer to the directory of
Authorized Service Centers
(enclosed
with this unit)
to locate
a convenient service
center, or consult
your
Technics dealer for instructions.
Problem Probable cause(s) Suggested
remedy
While usinq
the tape deck
Tape moves but
no
sound
is
heard,
The volume control of the amplifier
is
set to its
minimum
position.
oAdjust
the volume control
to the
desired
level.
The input selector of the amplifier
is not
set the
"tape"
position.
oSet
to the
"tape" positon.
Distorted sound.
The recording
level is too high
.Select
the
appropriate
recording
level.
Previously recorded sound
has not been erased.
Erase
head is
dirty.
oClean
the head.
Sound output
is hoarse or
unsteady.
Heads are dirty.
oClean
the heads.
Tape is damaged.
rTry
operation
with
a
new
cassette;
if there
is no
problem
with the new cassette, discard the damaged
cassette.
Poor
sound
quality
(especially
in
the
high treble
and
low
bass
ranges).
The correct
Dolby noise-reduction
button
is not
set.
.Set
it to the
correct
position.
Sound
is low,
poortone,
intermittent sound.
noise.
Heads, capstan and/or
pinch
roller
are dirty or
tape
is
damaged.
.Clean
the heads, capstan and/or
pinch
roller,
or
try a
new cassette.
Recording is not
possible.
The
recording
level
control
is
at
the
"0"
position.
.Select
the
appropriate
recording level.
Hlgh-pitched noise
("howling")
is heard while a
microphone
is
beinq
used.
The microphone
is
being
used too
close
to the
speaKers.
.Use
the microphone farther away
from the speakers
or decrease
the volume
level.
Matsushita
Electric
lndustrial
Co.,
Ltd.
Central
P.O. Box 288,
Osaka
530-91, Japan
RQTO1 578
F0789K1 089
Printed in Japan

Technics RS-B655 Specifications

Power

power consumption	21 W
power supply frequency	50 Hz/60 Hz
power supply voltage	240 V

Audio Specifications

wow and flutter	0.05% (wRMS)
frequency response (Normal)	20 Hz-18 kHz
frequency response (CrOz)	20 Hz-18 kHz
frequency response (Metal)	20 Hz-19 kHz
S/N ratio (Dolby C NR on)	74 dB
S/N ratio (Dolby B NR on)	66 dB
S/N ratio (Dolby NR off)	56 dB

Weight and Dimensions

dimensions	430x135x290 mm
weight	4.9 kg