Tandberg 10 X Stereo Brochure

Page 2

A refinement of what is possible in 1/4 inch
tape recording format today

The Mix is the refinement of what '5
technologically ptmible to achieve in
standard i/4 inch recording Format today.
We started to build lhk instrument for the
home. But we know that because of its many
prolessional features and its performance it
is destined to become the standard field
recording instrument for the protwriomt
and semiprofemirmal industry as hell.

The 10X has all the essential requirements
for the most critical applications: first of all
'l'amiberg legendary recording quality. se~
rondly extreme reliability. depelltinhllity.
flexibility and convenience.

As with the electronics so with the me-
chanism: all the parts have been designed
and produced to precise limits and are
therefore extremely stable.

0 Tandberg Cross-field recording technique
0 3 motors

0 i5 i.p.s.. 7 ill l.p.§. and 3 3/4 i.p.§.

0 Complete integrated electronic controb
O Servo tape drive and tensionlng systems
0 Equalized peak indicating instruments

0 Self-adjusting input circuits

0 Special edition facilities

0 Remote controllable

Tandberg Crawl-tell! recording technique
These Norwegian recording instruments
have become famous for their use of the
Tandberg Ctoss~ficld recording technique.
In this system the tape passes between the
record head and a special Cnlsvi-Itld head.
During recording the Cross'lrcld head.
provrdes transverse bias rrragnctization
which means that the tape is thoroughly
magnetiicd. the result is that the tape can
accept much strongcr signals than with
conventional techniques and reproduce the
same signals without audible distortion. The
most important criterion for achievrng top
quality recording is the full reproduction of
the highest tones It is exactly in this
situation where the Cross-field technique
makes its biggest impact and contributes
most to the sound quality!

Roan-um mar-cod

fl... .Jfl/llll

WWI-tin 0
emu-noun.

through Here the tape
has not been magna-
tizod completely

1) Kunming unit a
conventional recov-
dtrrg technique.

To achieve an opti»
mum Signal to-norse
ratio, low distortion.
and a trade frequency
range the tape should
be magnetized right

Tnndberg Cross-field recording head (A).
The special Crossvfield head is located on
posilc the record head. and the magnctic

2) Recording with the
TIMM Crow-Ma
lochniqul.

The tape has been
magnetized thoroughly

tapc passes between the two heads. The
Cross-ficld head allows the tape to accept
much stronger signals than is possible with
conventional recording techniques. thereby
improve the dynamic range and extending
the lrcquency response.

IS i.p.s. tape speed - of course.

A tape speed of I5 itp..s. for record and
playback has long been taken for granted
on professional tape recorders This speed
is ideal for editing work because it spreads
out the recording over a very large tape
surfacc.

The IOX has three speeds.

lhc 'Iandberg lUX is today one of the few
tape recording instruments With a speed tr!
1 3/4 i.p,s. For most recording 7 I12 i.p.s.
will give sufficient quality. The majority of
manufacturers have adopted this speed as
the lower limit because they cannot achieve
an acceptable performance at lower speeds.
Willi the IUX Tundhcrg has broken this
barrier. The ttsc of ("nus-field results in .i l
1/48 i.p.s. pcrformancc from this machine
which tttalchus or surpasses 7 U: i.p.s.
recording quality on other devices. Al 1 ill
i.p.\. lhc i'I'cquan) rcspnnsc goes from in
to 20000 7 and the maximum speed
variation is (LIV! rrrcasurcd according to
DIN 4 il I,

Tandberg ferrite playback bend 18).

As a material for magnetic heads. ferrite
has now been developed to such a dcgrcc
that we find it dcfcnsrblc to adopt it for the
playback head on the IOX. We make thcsc
heads ourselves and we are convinced that
ferritc gircx vcry loss intnnstc noise and
very high wear resistance.

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The function diagram and sophisticated

servo systems

SERIES 10x ; . . 7"
FUNCTION DIAGRAM PUSH 2* ~ J
HEELS 10:9 i
sparse 15. p5 MODE mm mm t . , t. t ..
_ _ 7-, . 7 i i
raps": . ' i
PHoToetrosr "1 ; Wfi'fi, 7 WW . l-tI
wmm _ 7
TAPE Movrrgo senson ' 7 j '-J, . 7 it r g! u. . L._l 1
A) 7 V r
.. "I r j 7 1 L-l L_l 1-l-I_.t_
merges , _'_, A . , , ,
It! .7 t if r - V I
PINCH ROLLER 7 u" 7; i I m
manta V ' ' ' ' ._ '
1 i . I
wwp moron L
u Jt lAGE A i V r _
"it l-mt "'1 "t! It
WNRM,.S : -', _, , . ,_
cm ,
osmgqu- ,, ; . .
neg-9a; _ . . . 7 7.
MFTERb , " 4, ,, 3 Q Q. 7
m
a» i r fi_r 1-1

REQHQAMPtrrrEns ,.
t . r.

A mg. vAter an 7% aru-

Electronic servo-controlled speed regulation.
The servo-control system for regulating the
tape speed during record and playback is.
one ofthe many professional features on
the l0X. It is responsible for 2r rerntrrktrhly
low speed tolerance: better than 1 0,392!
The servo-control system operates as fol-
loWS: tr lightemitting diode is located on
one side of the toothed whccl attached to
the flywheel. The teeth break the light

beam trrrd tlrc rcxultrrrg light ptilwx :rrc
transferred to electron: tnrurtx \rn :r
photo-tramistor located on the other \lllL of
the toothed whccl. lunch spccd Iii, 7 l.2
and 3 314" per second! corresponds to tr
particular pulse frequency If the com~
puriwn reveals tr deviation. the capstan
motor cithcr irrcretrscx or dccrcnxcx its
SPLCL' accordingly. 111: system opcrntcx
inSItrntnncrmsl).

true
7,, D

Sentrconlmllcd tap: tt-mlonlnu.

lt r5 rrnput'tnrrt th;rt the tape tenxrnn r~
current so that the tune nrnkes good contact
with the heads.

'lzrpc Iccordcu with :r Lmotor transport
Irsrrnll) have n constant Voltage npplrcd to
the left reel motor during record or play
back. The voltage [tdeuCL'\ braking which
results in tape tcnaiun, But thc tcnsion is
not constant became it nlxo depends on the
amount of ttrpr: lcft on the rccl. So the
mtrchinr either has a tendency townrdx high
hczrd wcur and tape tietorrnntron when the
supply reel is almmt empty or it tendency
townrds had rape/head contact when the
~opp|y rccl i» full.

()n the lth this problem hns been solved
the left lane tensioning arm acts as n
scnxor in n scrr'orcontmllcd system.

The tape tenuion is to 11:" intents and
purposes constant 7 regardless of how much
time there is on the \upply rccl.
Sophrstrtntett, accurate turd szrlc.