Free Audio Service Manuals - Free download Akai M 8 Service Manual

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MODEL NUMBER :

WEIGHT lNET

lN CARTON):

DIMENSIONS

POWER

REQUIREMENTS :

POWER

CONSUMPTION :

RECORDING

SYSTEM :

PLAYBACK

SYSTEM :

TAPE SPEED

DEVIATION :

WOW AND

FLUTTER :

PAS) tUnVV.'.RD
AND REWIND

TIME :

FREQUENCY

RESPONSE :

DISTORTION

SIGNAL-TO-

NOISE RATIO:

CROSS TALK

Akai Model MB, portable 4-tmc:

stereo tape recorder.

47.3 lbs.
2.4 lbs.
supplied.
20H;-;13"W.«9'D, overall, case clo-
sed. (510H2~340W >1226D in m/mi

(2115 kg.) for MS
[1.1 kg.) for all accessories

AC. 100, 110, 170, 200, 220, or
240 volis interchangeable. 50-60

cycles.
1 00 V A.

Specific "cross-field" recording based
on the theory 01 trailless recording
bias system. Inline 4 irack stereo

and 4-track monaural recording.

Inline 4~irack stereo, monaural play
back.

Three speeds; 712' l19cm.). 3534'
l9,5 cm.) and 1-7/3' [4.75 cm.) per
second. <15" seccnd wi-h an acces-
sory capstan and pinch wheel.)

Less ihan :3 per cent at all inpe

speeds.

Less than 0.15); at 7-Vg ips. EMS.
Less than 0.25% at 3-%ips. R.M.S.
Less than 0.35% at 1~%ips. HMS.

90 seconds for 1,200It. tape 5150
cycles and 75 seconds at '30 cycles.

30 to 25,000cps. at 7-) ins;

:3 db. 40 to 21,000 cps. at 7-111; ips,
:3 db. 40 lo 18,000 cpsl at 3-44 ips;
:4db.40 to 10,000 cps. at 1-% ips.
Within 2% at 1,000 cps, OVU Imtal

harmonic:

40 db below recorded level signal
at all speeds,

Within 53 db belween each track,

CHANNEL

SEPAR; TICN:

POWER INPUT

LEVELS :

POWER

OUTPUT :

INSULATION

RESISTANCE :

INSULATION
YIELD

STRENGTH :

MONITORING

~ w u
SYSI 'Au:

MOTOR

HEADS

MICROPHONE

USED :

SPEAKER

INCLUDED:

TUBES USED

HEELS USED
RECORDING
LEVEL

INDICATOR :

Better than 80 db at 1,000 ch-i 3 VU.

Microphone input level

-55 db lVR. max} at 1,000 cps.
Phono and radio input level
-15 db IVRI max; at 1.000 cps.

Head output, 1 mvi at 1,000 cps.
Ere-Amplifier output, 0.8 V at 1,000
cps, impedance 10,000 ohms

Main ouirvit. 34 dbni. up

(in 600 ohms).

More than 10 MEG ohms

More than one minute at AC.

'1,ooov with Headphone

With headphone (8 ohms during recordin
Hysteresis synchronous, two-speed
motor, dynamically balanced.

1/100 HP. Power ratio, 70 per cent.

. 3,000 to 1,500 rpm. at 50 cps,

3.600 to 1,800 rpm. at 60 cps.

: Inline four-track siereo/monaural re-

cord-play head;

T..- aaaaaaa l nﬂﬂ akw- a» '1 Ann ,wm
uupuuuuuu.uv,vvu minis E. New We.
Four-track, cross-field bias head;
Impedance..414,000 ohms at 60 kc.
Four-track erase heed'
Impedance...18 000 ohms at 60 lrc.

Square-shaped, dynamic microphone
Impedance. ..50,000 ohms
Sensitivity...--55 db.

Frequency Response...70 to 15,000
cps :10 db.

Two 4-inch dynamic speakers for

vertical stereo sound elleci
Impedancema ohms
Allowable Inpui,..6 walls
Frequency Response...80 to
12,000 cps, 2-10 db.

6267 iEFSSi <2, 12AD7 i12AX'lv:u2,

GBQS - 2, 6X4. 2, BARS 1.

Up to 7 reel

Ilurnoniui, Remodel VII melei

Akai M 8 Service Manual

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