Page 1
IASTE OF CONTENTS
I spEctFtcAnoNs.. .. ...'.....'...... I
I HOW TO A.TEASURE DESIGNATED VALUES OF
SPEC|F|CAT|ONS..,...... ..............' 2
I tocafloN oF coNlRor.s ..... . .........................., 3
IV DrsAssEMrLy oF tApE TRANSPoRT uNtTs
AND AMPL|F|ERS......... ...... ... ... ,l
v TRANSPORI MECHAN|SL .......... ..... 6
IJ ADJUSTMENT OF TAPE TRANSPORT UNIT .................".. 9
II ADJUSTMENT oF al4pr|FrER ... .................... .............'10
rlf r,{A|NTENANCE pRocEDURES .. ............. .............It
X( Lrsl or REPLACEI ENT pARTs....................................12
X ExpLoDED vtEw oF coMpoNENt p^RTs............ ......,.1,4
xI TROU3LESHOOTTNG CHART ................,..............,.21
n scHEfiATtC DTAGRAM .,.....,............, ..'.................25
xI CoNNECTING DfAGRAl.r ...................-..--.-.-.-......-.26
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SPECIFICATIONS
MODEL
NUMBER
wtrGHT (NET
IN CARTON)
DIMENSIONS
POWER RE-
qUIREMENTS
POWER CON.
SUMPTION
RECORDINC
Akai Modcl 1700, portablc 4-track
st.rco tape rccorder.
33 lbs (15 kg) without acccssorics.
t3-t6' lH) x 13-%' (w) x 9' (Dl case
A. C. 100, ll0, 120,200,220 or 240 volts
interchang-ぎabl-ぎ. 50 60cycles.
80VA.
Inline 4 t.ack st-ぎreo and 4-tfack mon-
Inlin-ぎ 4.tiack stefeo, monaural play-
Thrce speeds
cml and l-%" (a.is cmJ per second. (15"
p-ぎr s-ぎcond with an optional accessory
capstan and pinch whe-ぎI.)
SYSTEM:
PLAYBACK
SYSTEM:
TAPE SPEED :
.I'APE SPEED
DEVIATION :
WOW AND
FLUTTER :
TIME
FRDqUENCY
RDSPONStr
DISTORT'ION
SIGNAL-TO-
NOISE RATIO
CROSS TALK
CHANNEL
SEPARATION
Less than + 3 pef cent at all tape
Less than 0.2 % at 7-t6 ips. R.M.S.
Less than 0.3 % at 3-7a ips. R.M.S.
Less than 0.45 % at l-16 ips. R.M.S.
FAST FORWARD
AND REWIND
150 seconds fof 1,200 ft. tapc at 50 cy-
cles and 120 s-ぎconds at 60 cyclcs.
40 to 18,000cps. at 7-%;ps;
.L 3 db.80 to 12,000 cps. at 7-l, ipsj
+ 3 db. 80 to 10,000cps. at 3-3la;ps;
+ 4 db. 80 at 4,000cps. at l-7s ips.
Within 4%at l,000cps,oVU ltotal
40 db below rccorded lev-ぎlsignal at all
Within 55db between each trach.
Better than 80 db at l,000cps +3 VU.
POWJ]R INPU'I'
LDVELS:
POWDR
OUTPUT:
Microphone ir)put lcvcl
-55 db (VR. max.jat l,000cps.
Phono and radio input levcl
40 db (VR. max.)at l,000cps.
Pre-Amplifier output, 0.7V at 1,000
cps, impedanc-ぎ more than l00K ohms.
Main output,34dbm. up (in 600ohmt.
More than 50MEC ohns.
More than ore m;nute at A.C. 1,000V.
With headphor-ぎ during reco.ding.
Condenser start;ng induction two-
l/l00HP. Power factor,70 pe. cent.
2,900 to I,450 r.p.m. at 50 cps,
3,480 to 1,740 r.p.m. at 60 cps.
lnline +tf ack stereo/monau.al record-
play h-ぎad ;
Impedance.. .3,500 ohms + l0 % zt
I,000 cps.
4-track erase head ;
Imp-ぎdanc-ぎ. . .4,000 ohms +15% at 90
Round dynamic micropho.e
Impedance...50,000ohms
S-ぎDsit;vity... 55 db.
f.-ぎquency R-ぎrpoDse...70 ro 15,000
Two 5'x7' dynahic speakers.
Imp-ぎdance...8 ohms
Allowable IDput...6 warts
Frequency R-ぎsponse...8o ro 12,000
cps, :! l0db.
I2AT7 x2, 6BM8x2.
l50Dx2
Up to 7' r-ぎel
INSULATION
RESISTANCE
INSULATION
YI[,LD
STRENGTH
MONITORINC
SYSTEM
MOTOR
HEADS
MICROPHONE
USED :
SPEAKOR
INCLUDED:
TUBES USED :
SILICON
DIODE USED:
REELS USED :
RECORDING
LEVEL
INDICATOR : Horizontal, A-model VU m-ぎte..