Products
STM-600, -610 studio tape recorder
Due to its long experience as well as uninterrupted research
and
development work, the factory is in position to offer a comprehensive
range
of tape recorders satisfying even the most exacting customers.
The large quantities manufactured have allowed to automatize
the production
to a large extent with the result of an extremely stable high-precision
mechanical construction keeping its characteristics for many
years of operation.
The tape recorder STM-600 (and its stereo version STM-610)
is the due
successor of tape recorder STM-200 (-210), the best
selling product of ML so
far (ca 8000 pieces).
The unique feature of the device is that it's mechanical blockunits
are
interchangeable with those of the earlier device (STM-200,
STM-210).
Features:
| The tape is driven directly by the shaft of the servo-controlled capstan motor (System PLL) |
|
Capstan
speed stability is well beyond 10–5/°C
(unaffected by mains frequency and voltage)
|
| Electronic tape tension control (with no frictional sensing element) |
|
Moving and swinging elements are electronically damped |
| Long life recording and play-back heads ( made of Recovac material) |
| Electronic reliable tape timer |
| Semi-automatic tape cutter cutting in the plane of the gap (optional) |
| Built-in stroboscope for checking the tape speed |
| Instant stop at tape run-out |
| Correction amplifiers adjustable for NAB or CCIR standarts |
| Remote control unit for all functions |
| Continuous tape speed control (version 600-11, optional) |
| Built-in VU méter (version 600-07, optional) |
| Electronic mono-stereo switching (version 600-33, optional) |
Specifications
| Tape speed |
38.1 and19.05 cm/s, or 19.05 and 9.52 cm/s (optional) |
| Capstan speed stability | 10-5/°C |
| Tape slip | max. 0.1 % |
| Tape tension before capstan | 75p ± 15p |
| Tape speed monitoring | Stroboscope |
| Reel size |
IEC I., II., III. min. hub dia 57 mm max reel dia 270 mm |
| Start time to nominal tape speed | ca 0.7 sec |
| Wow and flutter (DIN 45507) |
38.1 cm/s , 0.035% 19.05 cm/s, 0.065% |
| Rewind time | approx. 2.5 min. for 1000 m reel |
| Tape timer | electronic tape timer with digital LED display (min. and sec.) |
| Input | balanced, earth-free |
| Input level | 0...+12 dB |
| Input impedance | >= 5 kOhm |
| Output | balanced, earth-free |
| Output level | max. +12 dB (into 200 Ohm) |
| Output impedance | <= 60 Ohm |
| Equalization |
IEC: 70 or 35 µsec NAB: 50 and 3180 µsec (optional) |
| Type of tape used when the specified parameters | 3M256 |
| Frequency response (over tape) 38,1 cm/s |
30-18.000 Hz 0-3 dB 125-10.000 Hz 0-20dB |
| Frequency response (over tape)19,05 cm/s |
40-18.000 Hz 0-3 dB 125-10.000Hz 0-2 dB |
| Signal-to-noise ratio measured linearly 20 Hz- 20 kHz (with tape) 38.1 cm/s |
mono: 67 dB stereo: 66 dB |
| Signal-to-noise ratio measured linearly 20 Hz- 20 kHz (with tape)19.05 cm/s |
mono: 65 dB stereo: 64 dB |
| Tape magnetization reference level |
mono: 320 nWb/m Stereo: 510 nWb/m |
| Distorsion from tape 38.1 cm/s |
mono: 0.4% Stereo: 0.6% |
| Distorsion from tape 19.05 cm/s |
mono: 0.5% Stereo: 0.8% |
| Erase depth |
>= 80 dB (at 1 kHz) |
| Bias frequency | 240 kHz |
| Erase frequency | 120 kHz |
| Cross-talk attenuation (stereo) |
>= 42 dB (at 1 kHz) |
| Fast winding | in both direction with continuously variable tape speed |
| Remote control | playback, record, stop, fast winding |
| Dimensions | 700X630X930 mm |
| Weight | 75 Kg |
| Power consumption | max. 175 VA |
| Power supply |
220 V, 50 Hz +5%...-10% (60 Hz optional) |
| Temperature |
10-50 °C (50-122°F) max. 95% non-condensing |
| Security stage | IEC-212 (MSz 10.190-80) |
