Akai GX-747 dbx Service Manual page 11

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
\
--
'\
\
--
"\
-
--
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
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1 Q