Nr. 92177619
Revox - A77- MK-III - deservit - 2 căi Magnetofon cu două bobine de 26 cm
Nr. 92177619
Revox - A77- MK-III - deservit - 2 căi Magnetofon cu două bobine de 26 cm
Very nice perfect working 26cm deck with 3 heads for after record monitoring.
It's 2 track, so high resolution one way only.
Heads are still very good and recordings sounds as good as the input signal.
All RIFA’s are replaced to prevent smoke explosions.
No LF amplifiers on board.
Speed is correct with calibration tape.
Al heads cleaned and demagnetized, contacts and pots cleaned.
New lamps placed.
Fully tested and working.
With 1 full tape and 1 empty.
The tape is old, but records still excellent, but you may have to clean the heads time to time anyways.
Best results with new tape.
Carefully shipped but very heavy!
Three Studer eddy current motors. Electronically governed capstan motor. Electronic speed change. Solenoid operated via 3 relays.
Tape Speeds:
3.75 and 7.5 ips (9,5 cm and 19 cm/sec.) ± 0.2%
High speed Version: 7.5 and 15 ips (19 cm and 38 cm/sec.) ± 0.2%
Wow and Flutter:
max. ± 0.04% at 15 ips
max. ± 0.08% at 7.5 ips
max. ± 0.1% at 3.75 ips (Weighted at DIN Standard 45507)
Tape Slip:
Less than 0.2%
Reel Diameter
Maximum 10.5" (26,5cm)
(Minimum hub diameter 23/8 inches)
Forward / Rewind
Fast winding time for 1800' (1100m) is 92 seconds
Tape Heads
Three (Separate precision erase, record and playback heads.) Patented 'True Radius' design ensures excellent S/N ratio and head wrap
Guide System:
The Heads, the capstan drive, and the machines tape guides are mounted to a one-piece casting to maintain precise alignment.
Operating position:
horizontal or vertical
Electrical
Monitoring
Individual stereo record and playback heads with separate preamps, plus separate record and play circuits permit full source-tape monitoring.
Equalization:
NAB Standard on both record and playback at all speeds.
IEC Standard switchable on playback only.
Record Playback
Frequency Response:
(Based on Revox 601)
15 ips - 30 Hz - 20 kHz ± 1.5 dB
7.5 ips - 30 Hz - 20 kHz + 2 / - 3 dB
3.75 ips - 30 Hz - 16 kHz + 2 / - 3 dB
Signal to noise:
2-Track:
15 ips - better than 66 dB
7.5 ips - better than 66 dB
3.75 ips - better than 63 dB
4-Track:
15 ips - better than 62 dB
7.5 ips - better than 62 dB
3.75 ips - better than 59 dB
Add 4 dB to the above figures with Dolby on, referenced to less than 2% THD
(Reference with Scotch 203 or Revox 601 or equivalent. Weighted as per CCITT C-curve to exclude supersonic bias noise.)
Distortion at full modulation
at 1 kHz:
Max. 2% at 15 ips and 7.5 ips.
Max 3% at 3.75 ips.
Crosstalk at 1 kHz:
Stereo, better than 45 dB
Mono, better than 60 dB
Bias frequency:
120 kHz, push-pull oscillator. Designed for low noise, high output tapes
Input sensitivity per channel
Microphone, switchable LOW/HIGH
LOW: 50 - 600 ohms (unbalanced) 15mV
HIGH: up to 100 K ohms 2.5 mV
RADIO: 33 K ohms 2.5 mV
AUX: 1 M ohms 33 mV
Output per channel
OUTPUT: max 2.5 rms @ 600 ohms
RADIO: max 1.2 rms @ 2.5 K ohms
PHONES: 200 - 600 ohms (no electrostatic)
Semiconductor complement:
54 Transistors; 32 diodes, 4 silicon rectifiers, 1 CdS-cell
Remote control:
Fully electric for all operation functions.
Power Supply:
Electronically stabilized.
Mains voltages:
110, 130, 150, 220,240, 250V / 50-60 Hz.
Power consumption:
70 ... 100 watts
Dimensions:
(Wooden Cabinet)
161/4" W x 141/8" H x 81/2" D.
(Measurements include knobs but not reels.)
Weight:
Approximately 34 pounds (» 15 kg)
All figures quoted are minimum performance values as measured with REVOX 601 tape normally exceeded by all units.
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