Teac W-450R User manual

TEAC" 91 01 373701
Stereo Double Revelse Gassette Declt
OWNER'S MANUAL
Thanks for buying a TEAC. Read this manual carefully to get the best performance from this deck.
CAUTION CAUTION: TO REDUCE THE RISK OF ELECTRIC
(OR BACK) NO USER SERVICEABLE PARTS
OUALIFIED SERVICE PERSONNEL
DO NOT REMOVE COVER
REFER SERVICING TO
SHOCK,
INSIDE
The lightning flash with arrowhead symbol, within an equilateraltriangle, is
to the presenCe of uninsulated "danger0us v0ltage" within the product's
sufficient magnitude to constitute a risk of electric shock to persons.
intended to alert the user
enclosure that may be of
The exclamation point within an equilateral triangle is intended to
important operating and maintenance (servicing) instructions in
appliance.
alert the user to the presence of
the literature accompanying the
This appliance has a serial number located
on the rear panel. Please record the model
number and serial number and retain them for
your records.
Model number
Serial number
WARNING: T0 PREUENT FIRE 0R SH0CK
HAZARD, DO N(IT EXPOSE THIS
APPTIANCE TO RAIN OR MOISIURE.
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SAFETY INSTRUCTIONS
CAUTION:
o Read all of these instructions.
o Save these instructions for later use.
o Follow all warnings and instructions marked on the
audio equipment.
1. Read lnstructions - All the safety and operating instructions
should be read before the appliance is operated.
2, Retain !nstructions - The safety and operating instructions
should be retained for future reference.
3. Heed Warnings - All warnings on the appliance and in the
operating instructions should be adhered to.
4. Follow lrntructions - All operating and use instructions
should be followed.
5. Water and Moisturs - The appliance should not be used
near water - for example, near a bathtub, washbowl, kitchen
sink, laundry tub, in a wet basement, or near a swimming
pool, etc.
6. Carts and Stands - The appliance should be used only with
a cart or stand that is recommended by the manufacturer.
6A.An appliance and cart combination should be moved with
care. Quick stops, excessive force, and uneven surfaces may
cause the appliance and cart combination to overturn.
15. Outdoor Antenna Grounding - lf an outside antenna is
connected to the receiver, be sure the antenna system is
grounded so as to provide some protection against voltage
surges and built up static charges. Section 810 of the
National Electrical Code, ANSI/NFPA No. 70 - 1984, pro-
vides information with respect to proper grounding of the
mast and supporting structure, grounding of the lead-in
wire to an antenna discharge unit, size of grounding con-
ductors, location of antenna-discharge unit, connection to
grounding electrodes, and requirements for th6 grounding
electrode. See Figure below.
EXAMPLE OF ANTENNA GROUNDING ACCORDING
TO NAT]ONAL ELECTRICAL CODE INSTRUCTIONS
coNrA I N E D JI"[?J'it !t,iit";.?lD Io AN D
POWE H LINES
SERVICE ENTRANCE
CONOUCTO FS
GROUNO
CLAMP
\ STAND.OFF
tttsuLATORS b
MAST
ANTE NNA
LEAO.IN WIRE
ANTENNA
DISCHARGE
UNITC
SE FV ICE
ENTFANCE
EOUIPMENT'....-
7. Wall or Ceiling Mounting - The appliance should be mount-
ed to a wall or ceiling only as recommended by the manu-
factu rer.
8. Ventilation - The appliance should be situated so that its
location or position does not interfere with its proper venti-
lation. For example, the appliance should not be situated
on a bed, sofa, rug, or similar surface that may block the
ventilat'iorl openings; or, placed in a built-in installation,
such as a bookcase or cabinet that may impede the flow of
air through the ventilation openings.
9. Heat - The appliance should be situated away from heat
sources such as radiators, heat registers, stoves, or other
appliances (including amplif iers) that produce heat.
10. Power Sources - The appliance should be connected to a
power supply only of the type described in the operating in-
structions or as marked on the appliance.
11. Grounding or Polarization - The precautions that should
be taken so that the grounding or polarization means of an
appliance is not defeated.
12. Power-Cord Protection - Power-supply cords should be
routed so that they are not likely to be walked on or pinch-
ed by items placed upon or against them, paying particular
attention to cords at plugs, convenience receptacles, and
the point where they exit from the appliance.
13. Cleaning - The appliance should be cleaned only as recom'
mended by the manufacturer.
14. Power Lines - An outdoor antenna should be located away
from power lines.
TO EXTERNAL
ANTENNA
TEBMINALS
POYVER SERVICE
G ROUNDING
ELECTRODE SYSTEM
(!.g. intarior mtal wrtrr pipa)
BoNorNG JUMPER d
,/
OPTIONAL ANTENNA GBOUNOING ELECTROOE ORIVEN
8 FEET (2.44 m) INTO THE EARTH lF REOUTRED 8Y LOCAL
COOES.SEE NEC SECTION 810 21 (I).
Use No. 10 AWG (5.3 mm2) copper, No.8 AWG (8.4mm2)alu-
minum, No. 17 AWG (1.0 mm2) copper<lad steel or bronze wire, or
larger, as a ground wire.
Secure antenna lead-in and ground wires to house with stand-off
insulators spaced f rom 4 feet (1 .22 ml to 6 feet (1.83 m) apart.
C mount antenna discharge unit as close as possible to where lgad-in
enters house.
Use jumper wire not smaller than No.6 AWG (13.3 mm2) copper, or
the equivalent, when a separate antenna{rounding electrode is used.
See NEC Section 810-21(j).
16. Nonuse Periods - The power cord of the appliance should
be unplugged from the outlet when left unused for a long
period of time.
Object and Liquid Entry - Care should be taken so that
objects do not fall and liquids are not spilled into the en-
closure through openings.
Damage Requiring Service - The appliance should be ser-
viced by qualified service personnel when:
A. The power-supply cord or the plug hai been damaged; or
B. Objects have fallen, or liquid has been spilled into the
appliance; or
C. The appliance has been exposed to rain; or
D. The appliance does not appear to operate normally or
exhibits a marked change in performance; or
E. The appliance has been dropped, or the enclosure dam-
aged.
19. Servicing - The user should not attempt to service the
appliance beyond that described in the operating instruc'
tions. All other servicing should be referred to qualified
service personnel.
-2-
a.
b.
c.
d.
17.
18.
GROUNO
C LAMPS
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Precautions
Environment
Avoid using the deck in the following
circ u msta nces:
o High temperature (such as heater, direct
sun light ).
o Extremely low temperature.
o Excessive humidity.
o Dusty atmosphere.
o Where power line voltage fluctuation is
severe (the use of a voltage regulator may
be advisable).
Tape Handling:
Do not store tape in the following places:
o 0n top of heaters, in direct sunlight or in
any other high-temperature areas.
o Near speakers, on TV sets 0r amplif iers or
near any strong magnetic f ields.
o High-humidity areas or dirty, dusty areas.
Avoid dropping or subjecting the cassettes
to excesibe shock.
Voltage Conversion (Fig. 5)
(For general exports models)
lf it is necessary to change the voltage
requirements of the deck to match your
area, use the following procedure:
I. DISCONNECT POWER LINE CORD.
2. Using a screwdriver, turn the selector
until the desired voltage marking ap-
pe ars.
IMP0BTAIIIT (for U.K. Gustomers)
The wires in this mains lead are coloured
in accordance with the following code:
o Turn off power f or all equipment bef ore
making connections.
o Read instructions for each comp0nent
you intend to use with the deck.
o Some stereo amplifiers have facilities f or
tape dubbing. Read the instruction
manual for your stere0 anrplifier to learn
the procedure.
Connecting to Stereo Amplifier
o lf the stereo amplif ier is fitted with 0lN
sockets only, you may use a DIN-to-DlN
cord (Europe models only) to go from the
DIN lN/0UT socket on the deck to the
appr0priate socket on the amplif ier. lf
you have a choice, the pin cords included
are to be preferred to a D lN-to-DlN cord.
Fig. 1
Fis.2
Audio Timer
t,,*_ IEN -ll*
Connections
STEREO AMPLIFIER
ttl
:') o
o
t@=O
H
BLU E:
BROWI{: t{EUTRAL
LIVE
As the colours of the wires in the mains
lead of this apparatus may not corres-
pond with the coloured markings identi-
f ying the terminals in your plug, proceed
j as follows:
The wire which is coloured BLUE must
be connected to the terminal which is
marked with the letter N or coloured
BLACK. The wire which is coloured
BR OWN, must be connected to the
terminal which is marked with the letter
L or coloured R ED.
ln tho U.K., this unit is sold without an
AC plug.
This product is manufactured to comply
with the radio interference of EEC
directive "S2 I 499 I EEC."
* Dolby noise reduction and HX Pro head-
ro0m extension manufactured under
license from Dolby Laboratories Licens-
ing Corporation. HX Pro originated by
Bang & 0lufsen.
"D0LBY", the double-D symbol DC and
"HX PR0" are trademarks of Dolby
Laboratories Licensing Corporation.
Timer Connection
Amplifier ou tl et
1l
A
h)
r:1
AC Power I LlJ I
w-450R
Tuner
-3-
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@oo ooo
t: ti.
ooo (E
Fis. 6
pstan
Pinch Roller
Erase Head
Record/Playback Head
C
o:l
-4-
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Features and Controls (Fis. 2 and 3)
O POWE R Switch
Press this switch to turn the deck's power
0N. Pressing it again turns the power off .
The deck draws nominal non-operating
power from the AC outlet with its
POWER switch in the 0FF position.
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apparaten fran ndtet.
€) otREcTl0N select switch
(PLAY I, HEC/PLAY II)
Press this down to change the tape running
direction. Each time the switch is operated,
the head rotates by 180 degrees and the
tape running direction is reversed.
@ Rf Vf nSE M0DE Switch
(PLAY I, REC/PLAY II)
The setting of this switch determines how
the deck will operate during playback or
recording when the end of tape is reached.
- (0ne-way): ln this position, playback
or recording will be released when the end
of tape is reached.
- (Reverse): With the REVERSE MODE
switch set to this position, when the end of
tape is reached during playback or recording
in the reverse direction, the playback or
recording mode will be released. During
playback or recording in the fonruard dirc-
tion, the tape running direction will be
reversed when the end of tape is reached,
and reverse playback or recording will be
continued to the end of the other side, at
which point the playback or recording mode
will be released.
cJ (Continuous): With the switch set to
this position, during either forward 0r
reverse play, when the end of tape is
reached, the tape running direction will be
reversed and playback will continue in the
opposite direction. This operation will be
repeated over and 0ver again until the
ST0P/EJECT button is pressed.
lf the recording or dubbing is performed
onto the tape in the REC/PLAY ll mecha-
nism with the switch set to this position,
the lever will return to the:=(reverse)
position automatically and operations will
be the same as with the button set to the
rl (reverse) position.
O Direction lndicators (HEV/FWD)
(PLAY I, REC/PLAY II)
0ne of these indicators lights to show the
current tape running direction. "R EV"
lights during playback or recording in the
reverse direction, and "FWD" lights
during running in the forward direction.
€) Casette Holder (PLAY l, REC/
PLAY II)
When the tape is stopped, pressing the
ST0P/EJECT button opens the cassette
holder door. (PLAY I deck is exclusively for
playback, while REC/PLAY ll deck can be
used for both playback and recording.)
G) Tape Operations Buttons (PLAY l,
REC/PLAY II}
When the end of tape is reached, the tape
transport automatically stops, unless the
PAUSE button is engaged.
PLAY ( > ) Button: P1s5s t0 start playback
at normal speed.
BEW (<< ) Button: Press to rewind the
tape at high speed.
F.FWD (>> ) Button: Press to advance the
tape at high speed.
ST0Pi EJECT ( ! /: ) Button: Press to
stop the tape travel and release any mode
other than the pause mode. Press this
button in the stop mode to open the
cassette holder door.
PAUSE ( lt ) Button: Press to temporarily
stop tape travel during playback or record-
ing. Press again to resume tape travel.
BECOBD (o ) Button (REC/PLAY ll
only): Pres to initiate recording or dubbing.
The "REC0 RD" indicator will light.
Note: Recording is not possible if the erase
protection tab has been removed
from the cassette.
O nf COHD Level Control
This control is used to adjust the levels of
the left and right input signals simultaneous-
ly when recording. Adjust so that the peak
value occasionally reaches "0tt - "+3" dB.
The setting of this control has no effect
during dubbing.
O ouBBtNG switch
Pres this button to on ( o ) when dubbing
from PLAY lto REC/PLAY ll.
O OUB SPEED Switch
HIGH (o ): Set to this position when
quick dubbing is required (approx. 2 times
faster than normal speed dubbing).
N0BMAL ( trI ): Set to this position when
normal speed dubbing is required.
Note: Make sure the DUBBING button is
set to 0FF ( EI ) when dubbing is
not required.
@ nnlC Jacks (L/R)
Plug microphones into these jacks when you
want to record using microphone. "L" is
for the left channel and "R" for the right
channel. When the microphones are inserted
into these jacks, the input signal from the
LINE lN jacks on the rear panel will be
automatically cut off. Microphones with
impedances from 200 ohms to 10k ohms
will give the best results, but 150-ohm to
200-ohm microphones can also be used.
O PH0NES (Headphones) Jack
Connbct 8-ohm stereo headphones to this
jack for private listening or monitoring.
@ ooLBY NR Switches
lN/0UT Switch: This switch is used to
activate and deactivate the noise reduction
system. To activate noise reduction, set to
the lN ( o ) position and select the NR-
system with the UU B/ DC C switch. Set
this switch to the OUT ( trI ) position to
record or play back without n0ise reduction.
D0 B/ DC C Switch: Set this switch to the
tt D t' position to record with Dolby
C-type NR or play back a cassette tape re-
corded with Dolby C-type NB', or to the
tt g " position to record with Dolby
B-type N R or play back a cassette tapes re-
corded with Dolby B-type NR.
Note: These have no effect during dubbing
from PLAY I to REC/PLAY llwhen
the D U BB lN G switch is engaged.
(DTAPE C0UNTER with Reset
Button (REC/PLAY ll only)
The tape counter indicates the relative
position of the tape loaded in the R EC/
PLAY I I deck. Press the button to reset
the counter 10 "000".
(D PTNT PROGRAM LEVEL METER
This indicator shows the peak levels of the
signals for both channels simultaneously.
ln the record mode, it shovrn the level of the
signals input to the LINE lN jacks on the
rear panel, and these can be adjusted with
the REC0RDING LEVEL control. ln the
playback m0de, the meter indicates the
level of the signals picked up from the tape.
(D 0peration lndicators
DUBBING: This indicator lights when the
DUBBING switch is pressed to 0N.
Hl-SPEED: This indicator lights when the
DUB SPEED switch is set to the HIGH
position.
REC0RD: This indicator lights when the
REC/PLAY ll deck is in the record mode.
(D 0oLBY NR lndicators
When the D0LBY NR switches are set for
Dolby C-type NR (lttl and DC C), the
DU C indicator will light, and when they
are set f or D0 LBY B-type N R (lN and
DC B), the Dfl B indicator will light.
(D t-tNE lN and 0UTPUT Terminals
@ ntN lN/0UT Socket (for Europe
models only)
Models for Europe are equipped with a
DIN socket for use with amplifiers that do
not have RCA-type pin jack c0nnectors.
When DIN-to-DlN cord is inserted into this
socket, the line input signals from the LIN E
lN jacks arc cut off.
Note: When using the DIN cable for con-
nection, make sure to use a Pre-
wired quality one.
(D Voluge Selector (General export
models only)
See "Voltage Conversion" on page 3.
-5-
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0perations
Playhack with PLAY I or REC/
PLAY II
1. Press the POWER switch to 0N.
2. Press the ST0P/EJ ECT button to open
the cassette holder.
3. Load a pre-recorded cassette and close
the cassette holder,
4. lf a Dolby-encoded tape has been loaded,
set the D0LBY N R switches to the ap-
propriate positions.
5. Set the REVERSE M0 DE sr,vitch as
desi re d.
C-.f (Continuous): To play the tape con-
tinuo usly.
D (Rwerse): To play both sides of the
tape once.
-- (One-vrny): To play only one side
of the tape.
6. Set the D lR ECTI0 N switch in the d irec'
tion in which play should start.
REV ( < ): Playback starts from the
reverse side.
FWD (> ):Playback stafis from the
forward side.
1. Press the reset button to reset the tape
counter to "000" (with the tape loaded
in REC/PLAY ll).
8. Press the PLAY ( > ) button to start
playback.
9. To stop playback, press the ST0 Pr
EJECT button.
Note: lf the DUBBING switch is set to 0N,
no playback sound will be heard,
During playback, be sure to set the
DUBBING switch to 0FF ( tr ).
Continuous Playback
(PLAY I to HEC/PLAY ll or vice versa)
o To play the tapes in the PLAY I and
REC/PLAY.ll one after the other:
1. Pres the POWER switch to 0N.
2. Load the pre-recorded cassettes into
both PLAY I and REC/PLAY ll.
3. Set the REVERSE MODE switches for
both PLAY I and REC/PLAY ll to the
appropriate positions.
Note: Be sure to set the REVERSE M0DE
switch of the PLAY I (from which
the tape playback is to start) t0 the
D (reverse) or .--.- (one-way) posi-
tion. (lf it is set tocJ(c0ntinuous),
the tape in REC/PLAY ll will not be
played. )
4. Check the direction indicators of both
decks and set the direction switch of
each deck appropriately.
5. Set the D0LBY N R switches correspond-
ing to the tape loaded in PLAY l.
6. Press the PLAY ( > ) button of PLAY l.
(PLAY I starts playback.)
7. Then press the PLAY ( > ) button of
REC/PLAY ll. (REC/PLAY ll enters
the play-standby mode.)
When PLAY I reaches the end of tape, or
r.rhen :-: S--; a-al- --:.-' 9LAY
I is Pres:: ::^:-:" i ,','r strai
playback aut:-.:,x , ,',-i- I:a
PLAY llfinishes cl., -: :-: r:.. r^i?'S
the stop mode.)
8. To stop playback, press l'E S-i-:'l
EJECT button of REC/PLAY ll.
When continuous playback is further
required, press the PLAY ( > ) button
of the deck which is in the play-standby
mode (PLAY l, in this case).
OPS - One Program Skip (PLAY I
only)
With this function activated, the tape skips
to the beginning of the next tune or the
beginning of the tune currently being play-
ed, at which playback starts again.
1. Set PLAY I to the playback mode.
2. During playback, press the F.FWD(>> )
or REW ( +<) button.
The tape is fast wound in the direction
corresponding t0 the button pressed,
then playback starts again from the
beginning of the next tune or the current
tu ne.
Recording vuith REC/PLAY ll
o Recording from a stereo system:
1. Press the P0WE R switch to 0N.
2, Pres the ST0P/EJECT button to open
the cassette holder.
3. Load a blank (or usable) cassette and
close the cassette holder.
4, lf required, set the D0 LBY NR lN/0UT
switch to lN ( ,= ), and select the
required N R system with the ilO Ci
DC B swtich.
5.Set the BEVEBSE M0DE switch as re-
quired:
D (reverse): When recording onto both
sides of the tape"
(lf the switch is set to C-J(continuous),
it will be returned to f,(reverse)
automatically when recording starts.)
-..--- (one-way): When recording onto
only one side of the tape.
6. Set the D I R ECTI0 N switch t0 start
recording in the required tape running
direction.
REV ( < ): Recording starts from
reverse side.
FWD ( > ): Recording starts from
forwrad side.
7. Press the reset button to reset the
counter to "000".
PEAK PROGBAM LE\,/EL METEB.
The optimum recording level may be
set by adjusting s0 that the peak value
occasionally reaches the range between
0 JB and +3 dB points,
11. Pr-ess the PAUSE button again to start
recorCing.
ll rc st0p recording temporarily, press
t"e PAUSE button. To restrat rOcord-
ing, press it again.
12.To stop recording, press the ST0PI
EJECT button
Dubbingfrom PLAY I to BEC/
PLAY II
1. Press the P0WER switch to 0N.
2. Load the pre-recorded cassette into
PLAY I and a blank (or usable) cassette
into R E C/PLAY ll, then close the
cassette holders.
3. Select the reverse mode with the RE-
VERSE MODE SwitCh.
4. Select the tape running direction with
the DIBECTI0N select switch.
5. Pres the DUBBING switch to 0N (o).
lf quick dubbing is required, set the
DUB SPEED switch to the HIGH ( " )
position.
6. Press the PLAY ( > ) button. (The deck
enters the play-standby mode.)
7. Pres the REC0BD button of REC/
PLAY ll. Both decks start running for
tape-to-tape dubbing.
No level adjustment is required for
dubbing. The tape in REC/PLAY ll is
recorded at the same level as the tape
loaded in PLAY l,
lf the tape in PLAY I has been recorded
ivith D olby N R , the resulting tape (in
REC/PLAY ll) will also be recorded
rryith the D olby N R, regardless of the set-
ting of the Dolby N R switches.
Erasing on REC/PLAY ll
A previously recorded tape wilt be auto-
rratically erased when you make a new
record ing on it. Alternatively, it can be
erased by "recording" 0n it with the RE-
C0 R D control set t0 the "MlN" position.
Timer Hecording and Playback
When used together with an audio timer,
recording of radio broadcasts or playback
of recorded tapes can be started at any
desired preset time.
(Make connections for timer-controlled
playback/recording 0perations, as shown in
Fis. 2.)
the
the
tape
8. Press the PAUSE button, then press
the REC0RD button. (At this time, the
PLAY button is activated together
with the HEC0RD button.) The RE-
C0BD indicator will light.
g.Adjust the input level with the RE-
C0RD control while checking the
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Timer-controlled recording (BEC/PLAY ll
only)
1. Turn the power to the audio timer 0N.
2. Turn the power to the amplifier to 0N,
and tune t0 the broadcasting station
to be recorded.
3. Load a usable cassette into REC/PLAY
il.
4. Pres the PAUSE button and the RE-
cord button simultaneously, then adjsut
the recording level with the REC0RD
control. After then, release both buttons.
5. Set the REVEBSE M0DE switch and
the D IRECTI0N switch as required.
6. Set the required starting (power on)
time and stopping (power off) time with
the audio timer, and set to the AUTO
(or TIMER 0N) mode. (For details, refer
to the instructions of the audio timer.)
When this setting is complete, the power
to all components will be switched
off.
7. Check that the p0wer to the deck is cut
off, then press the REC0RD button.
(tfre deck enters the record-standby
mode.)
8. Leave the P0WER switch of this unit set
to the 0N position.
\iVhen the preset starting time is reached,
the power will be supplied to the re-
levant components and recording will
start aut0matically. And when the tape
reaches the end, the auto shut-off func-
tion is activated, and the mechanism
will be i'eleased automatically. When the
preset stopping time is reached, the
p0wer to all components will be cut off .
Timer-controlled playback (PLAY I or
BEC/PLAY II)
1. Turn the power to the audio timer 0N.
2. Load the pre-recorded casette into
PLAY I or REC/PLAY ll.
Set the REVERSE M0DE switch and
the D lR ECTI0 N switch as required.
Turn the power t0 the amplifier 0N and
ad juSt t he p layb a ck level with th e
volume control of the amplifier.
Set the required starting (power on)
time with the audio timer, and set to the
AUT0 (or TIMER 0N) mode. (For de-
tails, refer to the instructions of the
audio timer.) When this setting is com-
plete, the power to all components will
be switched off .
Check that the power to this unit is cut
off, then pres the PLAY button. (The
deck enters the play-standby mode.)
Leave the P0WEB switch of this unit
set to the 0N position.
When the preset starting tirne is reached,
the power will be supplied to the re-
levant c0mponents and playback will
start automatically.
And when the preset stopping time is
reached, the power to all comp0nents
will be cut off .
Maintenance (Fig. 6)
The heads and tape path should be cleaned
and demagnetized periodically.
Cleaning Tape Path
o Apply head cleaning fluid* to the speciat
cotton buds or a soft cloth, and lighrry
rub the heads, capstan and all ,.netal
parts in the tape path.
o Also clean the pinch roller usrng rubber
cleaning fluid*.
* Both are available rn TEAC i-lC-1 and
BC1 in the USA or TEAC 12.261
Tape Recorder Cleaning Kit rn other
areas.
Oemagnetizing Heads
Be sure that the power is off, then de.
magnetize the heads using a TEAC E-3
demagnetizer, For details of its use, read
its instructions.
Caution:
lf the surface of the unit gets dirty, wipe
with a soft cloth or use a diluted neutral
cleaning liquid. Clean off thoroughly. Do
not use thinner, benzine or alcohol as they
may damage the surface of the unit.
DOLBY HX PR(l
Dolby HX Pro rs an "active bias" technique
that can improve the quality of audio tape
recordings. High-level high frequencies can
be recorded m0re accurately, without
sacrificing signal-to-noise ratio, while such
side effects of tape saturation as distortion
are reduced.
What ls Bias?
Bias is a very high-frequency signal generat-
ed within a tape deck and recorded on the
tape simultaneously with the pr0gram
material. This inaudible signal allows a low
noise, low distortion recording and flat
frequency response. Different magnetic tape
formuiations require different am0unts
of bias for 0ptimum performance. lf the
bias level is to0 high, high-frequency
Maximum 0utput Level (M0 L) decreases.
The Problem of Self-Bias
Unfortunately, bias level is often influenced
by the signal being recorded. The high f re-
quencies contained in some music act as
bias. This unpredictable source of bias is
added t0 the existing bias, resulting in a loss
of high-frequency response. As the high-
frequency content of the signal increases,
the ability of the recorder to record high
f requencies (M0 L) decreases. This pheno-
menon is called self-biasing.
How Dolby HX Pro Solution
Tne D o by H X Pro monitors the high-
{.eq rency c0ntent of the program material
3.ro adJUsts the recorder bias oscillator to
:r'a nlarn a c0nstant total bias level. The
'esult rs improved hrgh frequency resp0nse
3nd rower drst0r|0n. Depending on the type
of tape, the rmprovement in headroom can
5e 6 dB o, more
The Benefits
Wrth Dolby HX Pro, rt rs easrer to make
m0re accurate recordings of the kind of
musrc which contains hrgh-level high fre-
quencies. The improvement is srmrlar to
that of hrgh-performance tape 0ver c0nven-
tional tape, so regardless of the type 0f
tape used, the results wrll sound better.
Most important of all, Dolby HX Pro
requrres n0 decoding pr0cess. 0nce the
tape rs recorded with it, the rmprovements
will be realized when playing the tape back
on any machine.
?ABz 50 r00 2!a _.0C ! : t ,0 20r
Example of improved frequency respons€ using Dolby
HX Pro
a
J-
+.
5.
D.
7.
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Specifications
Track System 4-Track, 2-Channel Stereo
Heads 3: 1 Playback (Rotary, Deck l)
1 Erase and 1 Record/Playback
(R otary, Deck I l)
Type of Tape Casette tape C-60 and C-90
(Philips type)
Tape Speed 4.76 cm/sec (1-7l8 ips)
9.5 cm/sec (3-3/4 ips. High speed
dubbing only)
Motors 2:1 DC servo motor (Deck Ull)
Wow and Flutter 0.08 % (WR MS)
Frequency Response (0verall, -20 dB)
30 - 18,000 Hz, Metal
30 - 18,000 Hz, Cr02
30 - 17,000 Hz, Normal
Signal-to-Noise Ratio (0verall)
59 dB (3 % THD level, Weighted)
69 dB (Dolby B NR ln, over 5 kHz)
79 dB (Dolby C NR ln, over 1 kHz)
Fast Winding Time Approximately 120
seconds for C-60
lnputs Line: 87 mV, 50k ohms
Mic: 0.35 mV/2.5k ohms
0utputs Line: 0.55 V for load impedance of
50k ohms or more
Headphones: 8 ohms
Power Requirements 1 10/1 2012201240 V
AC, 50/60 Hz (General Export
model)
120 V AC,60 Hz (U.S.A./Canada
model)
220V AC,50 Hz (Europe model)
240 V AC,50 Hz (U.K./Australia
model)
Power Consumption 16 W
Dimensions(WxHxD)
435 x 127 x262mm
,17-1 18" x 5" x 10-5/16")
Weight 4.7 kg (10.36 lbs.)
Standard Accessories lnput-output connec-
tion cords
o Specifications were determined using
metal tape except as noted.
o lmprovements may result in specification
or feature changing without notice.
rEAc coRPoRArloN g[U.oj|i,""';,',3i]1ff1]1,$TSilj;l1ii3lll?,i;"1"]Jl,"l1X?lJiiii"tj.?r'.',.'Jll,,
TEAC AMERICA. INC 7733 Telegraph Road, Montebello, California 90640 Phone: [phone]
TEAC UK LIMITED 5 Marlin House, Marlins Meadow, The Croxley Centre, Watford, Herts., WDl 8YA, U.K.
Phone: [phone]
TEAC CANADA LTD 340 Brunel Road Mississauga, Ontario L4Z2C2, Canada Phone: [phone]
TEAC AUSTRALIA PTY., LTD. 1OG Bay Street, Port Melbourne Victoria 3207, Australia Phone: [phone]
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