Akai GX-747 dbx Service Manual

F characteristics comparison of newly developed EE tape and conventional Hi Fi Tape
19cm/s tape speed
+ 10
/
I
0
/
I
-10
/
I
-20
Iv
20
50 100 200
9.5 cm/s tape speed
v-
I
0
~
,
-10
~
I
-20
/
I
20
50 100 200
S/N Ratio for Record/Playback
EE tape/Conventional Hi Fi tape
20
50 100 200
-::::..:
~'
i. ldB
i\ T
\
--
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--
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-
--
i
500 1000 2000 5000 10000 20000 40000
~'\
.i.. I dB
T
..... \,\
\
\
'
.....
t
500 1000 2000 5000 10000 20000 40000
----- Newly developed EE tape
Conventional
HiFi tape
Fig. 6-4
500 1000 2000 5000 10000 20000 40000
------ Newly developed EE tape
Conventional HIFI tape
Fig. 6-5
-----------------SERVICE MANUAL GX-747dbx -----------------
1 Q

Akai GX-747 dbx Specifications

General

Track System	4-track, 2-channel stereo
Reel Size	up to 10.5 inch reel
Type	Reel to Reel
Heads	2 x erase
Motor	1 x capstan, 2 x reel
Tape Speed	9.5 cm/s, 19 cm/s
Wow and Flutter	0.03% (19 cm/s)
Signal to Noise Ratio	65dB
Input	1 x line, 1 x microphone
Output	1 x line
Dimensions	440 x 480 x 260 mm