Product description
The well-known reliability of the Revox A 77 is a result of a professional design concept which successfully combines the advantages of a solidly constructed tape transport mechanism with the advantages of an advanced electronic circuit design. A 3-motor transport mechanism with electronically regulated capstan motor and solenoid operated servo-brakes possesses few parts which are subject to mechanical wear. The use of a diecast motor chassis and head support ensures that a high degree of mechanical precision and long term stability are maintained, even under excessively heavy use. The mechanical and electronic properties thus complement each other in a most successful way.
| Mechanical: | |
| Tape Transport | 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 ± 0.2% High speed Version: 7.5 and 15 ips ± 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 |
| Tape Slip | Less than 0.2% |
| Reel Diameter | Maximum 10.5″ Minimum hub diameter 2 3/8" |
| Forward / Rewind | Fast winding time for 1800′ 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 |
| 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 | 15 ips – 30 Hz – 20k Hz ± 1.5 dB 7.5 ips – 30 Hz – 20k Hz + 2 / – 3 dB 3.75 ips – 30 Hz – 16k Hz + 2 / – 3 dB |
| Signal to Noise | 2-Track: |
| Output per Channel | Output: max 2.5 rms @ 600 ohms Radio: max 1.2 rms @ 2.5 K ohms Phones: 200 – 600 ohms |
| Semiconductor Complement | 54 Transistors; 32 diodes, 4 silicon rectifiers, 1 CdS-cell |
| Remote Control | Fully electric for all operation functions. |
| Output Amplifiers | Plug-in optional. 2 x 8 watts continuous rms power, 2 x 10 watts music power as per IHFM, 4-16 ohms, less than 1% distortion. |
| Power Supply | Electronically stabilized. |
| Mains Voltages | 110, 130, 150, 220, 240, 250 Volt / 50 - 60 Hz |
| Power Consumption | 70 to 100 watts |
| Dimensions | 16 1/4” ( W ) x 14 1/8” ( H ) x 8 1/2” ( D ) |
| Weight | 34 pounds |
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