The Dolby HX PRO System
Tape sensitivity is constantly changing as recordings are made
due to the biasing effect of high frequency audio signals. Dolby
HX PRO is a system that compensates for these undesirable fluc-
tuations during recording. It does not operate during playback, so
cassettes recorded with Dolby HX PRO can be played back on
decks not equipped with the system.
Note:
Dolby HX PRO operates independently of Dolby B and
C NR
and only during recording.
Special modes of operation
(Sa
aN
SE Se
PO
Using the Accubias Control Knob
Although this deck is equipped with an Accubias system for fine
bias adjustment, you will get excellent results with most tapes by
just leaving the Accubias Control knob in the center clickstop posi-
tion. Nevertheless, some tapes may require additional bias adjust-
ment in order to obtain flat frequency response. In such cases,
refer to the following diagram. For tapes not listed, refer to the
"Determining the Correct Accubias Setting for Tapes Not Listed"
section below.
UX-PRO
HF, HF-S, HF-X
MAXELL:
UDEN, UDI-S
XL, UDN-S
SONY:
ucx
MAXELL:
XLILS.
MEMOREX:
MAX 1
REALISTIC:
FUutI:
FRI
REALISTIC:
LN
AGFA
SUPER FERRO DYNAMIC
The position of the Accubias control knob [5] affects only normal
and high position tapes; it has no effect on metal tapes.
Determining the Correct Accubias Setting for
Tapes Not Listed
Use the following procedure to determine the correct Accubias set-
ting for cassettes not listed in the above diagram. As it is neces-
sary to make use of the "white noise" produced by FM tuners
when tuned to the unused frequencies between stations, it is not
possible to perform this procedure with FM tuners that do not
produce white noise. In such cases, use the center clickstop posi-
tion when making recordings.
1.
Set your FM tuner to an unused frequency between stations.
2.
Turn the tuner's FM muting switch off. (White noise should be
audible.)
3.
Record white noise on a section of the cassette tape you wish
to use at about the -10dB recording level. (The Accubias Con-
trol knob should be set to the center position.)
4.
Compare the sound of the tuner's white noise with that
recorded on the tape. If they sound the same, the Accubias
setting is correct.
5.
If they do not sound the same on the first try, the Accubias
Control knob toward the (+) or the (-) indication and repeat
the above procedure. When you have found the position that
most closely approximates the sound of the FM tuner's white
noise, record the setting in the above diagram for future refer-
ence.
Notes:
Using the Repeat Modes
1. Block Repeat
Use this mode to repeat a song or a specific section up to five
times. First, set the Repeat Selector switch on the left [2] to the
(==) ON position and the one on the right to the (=)
BLOCK position. Next, press the [=> PLAY button to begin
playback. When the tape reaches the beginning of the block
you wish to repeat, press the [> PLAY button once again. This
marks the beginning of the block to be repeated. When the
end of the block to be repeated is reached, press the <4 but-
ton. The portion of the tape between the point where the [>
PLAY button was pressed and the point where the <4 button
was pressed will be played five times in succession. After the
fifth time, playback continues to the end of the cassette side.
If you don't press the [> PLAY button a second time or if you
turn on the block repeat function after playback has begun,
the position at which you originally pressed the [=> PLAY but-
ton becomes the starting point of the block to be repeated.
if you turn on the block repeat function after playback has
begun, the position at which you turned the function on be-
comes the starting point of the block to be repeated and the
end of the tape becomes the endpoint.
Point at which
playback is initiated
This section is
:
repeated five
Beginning
|
| times.
I
arabe. \
End of tape
|
|
c—i
1
—
(1) Point at which
(2) Point at which
;
:
;
:
(3) Point at which
> PLAY is pressed
cS PLAY is pressed
44 is pressed
first time
second time
e@ When the [> PLAY button is pressed twice, the block between
(2) and (3) is repeated five times.
e If the [> PLAY button is not pressed a second time at point (2),
the block between (1) and (3) is repeated five times.
Point at which
playback is initiated
This section is
'
| repeated five
'
Beginning
:
1
times.
t
oftape
|
1 (Enid of.tape
a
NORE
|
i=
>
(1) Point at which
[> PLAY is pressed
(2) Point at which
block repeat mode
is initiated
(3) Point at which
<4 is pressed
@ if the block repeat mode is turned on after playback has
begun, the block between (2) and (3) is repeated five times.
To cancel block repeat, either press the Il STOP button or set
the Repeat Selector switch [2] in the OFF position.
if the ff PAUSE button is pressed during repeat play and then
later canceled, repeat play resumes.
Note:
if the <4 button is pressed less than 10 seconds after the [>
PLAY button, the block repeat function will not operate.
2. Full Repeat
Use this mode to repeat an entire cassette side up to five
times. First, set the Repeat Selector switch on the left [2] to the
(.._-.) ON position and the one on the right to the (JBL) FULL
position. Then press the [> PLAY button. The cassette side will
be repeated up to five times.
e The repeat function can be activated by pressing the left
Repeat Selector switch to the (=) ON position either before
or after the [> PLAY button. It is therefore possible to activate
the repeat play mode as a tape is being played.
1) Block and Full repeat do not operate during recording.
2) The left-hand Repeat Selector switch has an ON and an OFF
position. Be sure the switch is in the OFF (IIL) position when
repeat play is not required.