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To Obsolete Media Akai Tape Deck Resources
SPECIFICATIONS
|
STYLE |
Portable |
|
WEIGHT |
37.4 lbs (17 kg) |
|
DIMENSIONS |
14" x 14" x 8-7/8" (358 x 358 x 227 mm) |
|
POWER SUPPLY |
AC 100 to 240 V, 50/60 Hz |
|
RECORDING SYSTEM |
In-line 4-track stereo, monaural recording by using Cross-field Bias Head. |
|
PLAYBACK SYSTEM |
1 In-line 4-track stereo, monaural playback. |
|
TAPE SPEED |
1-7/8, 3-3/4 and 7-1/2 ips. |
|
TAPE SPEED DEVIATION |
Within ±0.8% |
|
WOW AND FLUTTER (Play back only) |
Less than 0.1% r.m.s. at 7-1/2 ips. Less than 0.2% r.m.s. at 3-3/4 ips. Less than 0.3% r.m.s. at 1-7/8 ips. |
|
FREQUENCY RESPONSE |
30 to 25,000 Hz ±db at 7-1/2 ips. 30 to 18,000 Hz ±db at 3-3/4 ips. 40 to 9,000 Hz ± 4 db at 1-7/8 ips. |
|
SIGNAL TO NOISE RATIO |
Better than 48 db (Forward Operation) Better than 45 db (Reverse Operation) |
|
DISTORTION |
Within 3% at Line Output, 1,000 Hz O VU Recording and Playback. |
|
CROSS TALK |
Less than —65 db (Monaural) Less than -43 db (Stereo) |
|
ERASE RATIO |
Less than — 70 db |
|
INSULATION RESISTANCE |
More than 50 M.Ohms |
|
INSULATION DURABILITY |
500 V. AC for more than one minute duration. |
|
LINE OUTPUT |
Output Impedance ........ 100 Ohms. Required load impedance more than 25 K.Ohms. 1.23 V(+4dbs) |
|
POWER OUTPUT (External Speaker Jack) |
8 Watts (r.m.s.) per channel, total 16 watts Impedance ................. 8 ohms |
|
DIN OUTPUT |
0.4V Output Impedance ........ 10 K.Ohms. Required load impedance more than 50 K.Ohms. |
|
LINE INPUT |
Above 50 mV(- 25 dbs) Impedance ............ .175 K.Ohms. |
|
DIN INPUT |
High ........ Above 50 mV (-25 dbs) Impedance ........ 150 mV (-45 dbs) Low ......... .Above 5 mV (-45 dbs) Impedance ............. 27 K.Ohms. |
|
MIC. INPUT |
Above 0.5 mV (-65 dbs) Impedance ............ .4.7 K.Ohms. |
|
FAST FORWARD AND REWIND TIME |
85 seconds for a full 1,200 foot tape at 50 Hz. 65 seconds for a full 1,200 foot tape at 60 Hz. |
|
MONITOR SYSTEM |
The program being recorded can be monitored by using Stereo Headphone (8 Ohms) ....... Stereo Headphone Jack. Crystal Receiver …. Line Output Jack. |
|
MOTORS CAPSTAN MOTOR Revolutions |
Hysteresis Synchronous 3-speed (2-4-8 pole) motor Condenser Capacity 3 μF (50 Hz) 2 μF (60 Hz) 3,000 - 1,500 750 r.p.m. (50 Hz) 3,600 - 1,800 900 r.p.m. (60 Hz) |
|
REEL MOTOR Revolutions |
il 12,outer-rotor motors. 930 r.p.m. at 50 Hz 100 V 1,120 r.p.m. at 60 Hz 110V |
|
HEADS REC/PLAY HEAD ERASE HEAD BIAS HEAD |
In-line 4-track stereo and monaural Impedance . . . 1,200 Ohms at 1,000 Hz. Gap .................. .2/1,000 mm In-line 4-track stereo Impedance ..... .500 Ohms at 60 KHz. Gap ..................... .0.2 mm In-line 4-track stereo Impedance ..... .500 Ohms at 60 KHz. Gap ..................... .0.2 mm |
|
RECORDING LEVEL INDICATOR |
VERTICAL Indication VU Meter x 2 |
|
TRANSISTORS & IC USED |
2 ICAA-072D 4 2SD92 2 2SC458 (B) 7 2SC372 4 2SC693FU 4 2SC971 1 2SD223 |
|
DIODE USED |
1 SB-3-01P 3 IN34A 1 10D4 1 5B2 4 V06C 1 RD24A (M) |
|
REELS USED |
7", 5", 3" reels 10-1/2" Reel Adaptor available (optional accessory) |
Picture and data copied from Akai Service Manual
Last modified
December 20, 2003