Akai GX-280D-SS

GX (GLASS & CRYSTAL FERRITE) HEAD
Akai has equipped this model with its new and amazing
Glass & Crystal Ferrite Recording and Playback Heads to
bring you unequalled open reel high fidelity sound. With
the Glass & Crystal Ferrite Head, superbly wider frequen-
cies with clear highs can be recorded in all their true fidelity
with low noise tape. In other words, with the GX Head, a
high dynamic range and excellent signal-to-noise ratio are
achieved. The secret of this success lies in the head
materials, superior processing technique and the focused-
field recording system. The core of this quality head is
made of single crystal ferrite and is mounted and set in
glass. The superior high range characteristics are contri-
butable to the structure of the head gap which focuses the
magnetic field into a sharp oblong radius. This focused field
recording system minimizes high frequency loss, eliminating
undue equalization and achieving a wider dynamic range.
4-CHANNEL SURROUND STEREO
What is all the talk about 4-channel stereo and what are the
advantages? 4-channel stereo is equally as great an achieve-
ment as the advancement from monaural to 2-channel
stereo. Just as 2-channel stereo sound reproduction meant
the exodus of flat monaural sound, this epoch-making new
system eliminates the inability to pick up and reproduce
pure concert hall sound. New 4-channel stereo uses 4 signal
paths or sound tracks in the program material and in
playback approximates the complexity of the sound waves
which reach the listener's ear when attending a live concert
hall performance.
For playback, 4 speakers are positioned to surround the
listener. The sound from the front and rear speakers give
the listener an exciting “sense of presence". With the 4
speakers each delivering separate sound, you are literally
surrounded with a wall of sound. This 4-dimensional sound
reproduction makes conventional stereo seem empty and
insufficient.
AKAI’s "SURROUND STEREO" supplements conven-
tional stereo's 2 front speakers with two additional rear
speakers to form the “2-2 system". The listener is sur-
rounded by two sets of speakers (left & right front and left
& right rear). This arrangement does not mean, however,
that simply adding two speakers to a 2-channel system is all
that is necessary for 4-channel playback. At recording time,
4 microphones are used and sound is picked up from 4
separate places. Four separate recordings are made using 4
separate channels (four tracks in one direction). This
4-channel stereo tape feeds into 4 pre-amplifiers and 4 main
amplifiers to activate a 4-speaker system. Thus, at playback
time, sounds from separate channels are emitted from each
speaker providing the listener with a feeling that he is
listening to concert hall sound from the best seat in the
auditorium.
Model GX-280D-SS Stereo Tape Deck is a compatible
4-channel/2-channel model. For 2-channel operation, only
the front channels are utilized.
For exciting 4-channel surround stereo playback, a 4-
channel external power amplifier or two 2-channel ampli-
fiers can be used to activate a 4-speaker system.
CEE, CSA, UL, and LA Standard models are not
equipped with a Voltage S tor or Cycle Conversion
Switch. Therefore, voltage and cycle conversion is
not necessary. If your machine corresponds to any of
these standards, please disregard all references to
voltage and cycle adjustment throughout this manual.
CEE Models : 220V, 50Hz
CSA Models 120V, 60Hz
UL & LA Models: 120V, 60Hz
INDEX
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4-Track Recording/Playback System ...............
4-Channel Surround Stereo Recording/Playback .. . .
2-Channel Stereo Recording/Playback ............
Tape Loading, socs а ee ee Gases w sh oes
Tape Selector Switch ...... eee
Tape Speed Selection socrus ee
Direct Function Change Control System .
Fast Forward & Rewind ........... ays
Automatic Stop & Shut-Off . css cee coe or ees
How To Use The Pause Button ,..................
How To Use The Index Counter ..................
Remote Control о uu a zoe IM eaten dy NUR |
Operating Instructions ...........
Connections For Playback . . 52.2 ose sawa ame
Connections For Recording ...... S aa
4-Channel Surround Stereo Playback .............
2-Channel Stereo Playback
Automatic & Manual Reverse Playback .............
4-Channel Stereo Recording
2-Channel Stereo Recording 10
Sound-On-Sound Recording aem 1D
Sound Mixing .......... x 12
N о со чо tn Un tn tn + + + RR + + + + tO
10
Tape Erasing ......... 12
Tape Splicing & Editing . 8 13
Maintenance ................................. 13
Heads Should Always Be Kept Clean...........-- 13
Pinch Wheel & Capstan Cleaning ................ 13
Head Demagnetizing. . 2... оноо ван Cuna t'a eee w
Voltage & Cycle Conversion
Technical Dalasa o xg onset. жал SNO
Standard Accessories .. .
Trouble Shooting Chart а dives es tunia ans