Specifications; Tape Speed; Wow And Flutter - Akai 1700 Service Manual

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€abl€. 50 60cycles.
80VA.
Inline 4 t.ack st€reo and 4-tfack mon-
Inlin€ 4.tiack stefeo, monaural play-
Thrce speeds
cml and l-%" (a.is cmJ per second. (15"
p€r s€cond with an optional accessory
capstan and pinch whe€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€conds at 60 cyclcs.
4 0 t o 1 8 , 0 0 0 c p s . a t 7 - % ; p s ;
.L 3 db.80 to 12,000 cps. at 7-l, ipsj
+ 3 d b . 8 0 t o 1 0 , 0 0 0 c p s . a t 3 - 3 l a ; p s ;
+ 4 db. 80 at 4,000cps. at l-7s ips.
W i t h i n 4 % a t l , 0 0 0 c p s , o V U l t o t a l
40 db below rccorded lev€lsignal at all
Within 55db between each trach.
B e t t e r t h a n 8 0 d b a t l , 0 0 0 c p s + 3 V U .
POWJ]R INPU'I'
LDVELS:
POWDR
OUTPUT:
Microphone ir)put lcvcl
- 5 5 d b ( V R . m a x . j a t l , 0 0 0 c p s .
Phono and radio input levcl
4 0 d b ( V R . m a x . ) a t l , 0 0 0 c p s .
Pre-Amplifier output, 0.7V at 1,000
cps, impedanc€ more than l00K ohms.
M a i n o u t p u t , 3 4 d b m . u p ( i n 6 0 0 o h m t .
M o r e t h a n 5 0 M E C o h n s .
M o r e t h a n o r e m ; n u t e a t A . C . 1 , 0 0 0 V .
With headphor€ during reco.ding.
Condenser start;ng induction
two-
l / l 0 0 H P . P o w e r f a c t o r , 7 0 p e . c e n t .
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€ad ;
I m p e d a n c e . . . 3 , 5 0 0 o h m s + l 0 % z t
I,000 cps.
4-track erase head ;
I m p € d a n c € . . . 4 , 0 0 0 o h m s + 1 5 % a t 9 0
Round dynamic micropho.e
I m p e d a n c e . . . 5 0 , 0 0 0 o h m s
S € D s i t ; v i t y . . . 5 5 d b .
f . € q u e n c y R € r p o D s e . . . 7 0 r o 1 5 , 0 0 0
T w o 5 ' x 7 ' d y n a h i c s p e a k e r s .
I m p € d a n c e . . . 8 o h m s
A l l o w a b l e I D p u t . . . 6 w a r t s
Frequency R€sponse...8o ro 12,000
c p s , : ! l 0 d b .
I 2 A T 7 x 2 , 6 B M 8 x 2 .
l 5 0 D x 2
Up to 7' r€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€te..