Difference between revisions of "Revox A 77"
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| − | == | + | == Data == |
| − | {{ | + | {{navigation}} |
| − | ''' | + | '''General''' |
| − | * | + | * Manufacturer: [[Revox]] |
| − | * | + | * Model: A 77 Mk I [[Revox A 77 MK II|MK II]], [[Revox A 77 MK III|MK III]] and [[Revox A 77 MK IV|Mk IV]] |
| − | * | + | * Years of manufacture: 1967-1981 |
| − | * | + | * Manufactured in: Germany / Switzerland |
| − | * | + | * Colour: grey, silver, housing walnut |
| − | * | + | * Remote control: Cable remote control 5 m or 10 m (accessories) |
| − | * | + | * Power consumption: 70 W / with power amplifiers max. 100 W |
| − | * | + | * Dimensions, horizontal): 413 mm × 359 mm × 215 mm (W × H × D) |
| − | * | + | * Weight: approx. 15 kg |
| − | * | + | * Original price approx.: 1700 DM (list price) |
| − | ''' | + | '''Connections''' |
| − | * | + | * Number of outputs: 3 |
| − | ** 2 | + | ** 2 × output (Cinch): 2.5 V / Ri 600 Ω |
| − | ** 1 | + | ** 1 × Radio (DIN): 1.2 V / Ri 2.5 kΩ |
| − | ** 1 | + | ** 1 × Phones (jack 6.3 mm): 200-600 Ω |
| − | * | + | * Number of inputs: 3 |
| − | ** 2 | + | ** 2 × MIC (jack 6.3 mm / Cinch) Low: 0.15 mV / 50-600 kΩ / High: 2.5 mV / up to 100 kΩ |
| − | ** 2 | + | ** 2 × Aux (Cinch): 35 mV at 1 MΩ |
| − | ** 1 | + | ** 1 × Radio (DIN): 2.5 mV at 33 kΩ |
| − | ''' | + | '''Technical Data''' |
| − | * Max. | + | * Max. Coil diameter: 26.5 cm (10.5") |
| − | * | + | * Drive: 3 external rotor AC motors (direct drive) |
| − | ** | + | ** Tone motor controlled via highly stable oscillator and tachogenerator |
| − | ** 2 | + | ** 2 asynchronous winding motors |
| − | * | + | * Heads: 3 |
| − | * | + | * Tracks: 2 or 4, depending on version |
| − | * | + | * Tape speeds: 9.5 and 19 or 19 and 38 cm/s, depending on the version, ±0.2 |
| − | * | + | * Slip: <0.2 % |
| − | * | + | * Synchronization fluctuations: |
| − | * | + | * Pitch variations: |
| − | ** | + | ** at 38 cm/s <±0.06 % |
| − | ** | + | ** at 19 cm/s <±0.08 % |
| − | ** | + | ** at 9.5 cm/s <±0.1 % |
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| + | * Overall frequency response: | ||
| + | ** at 38 cm/s : 30-22,000 Hz +2/-3 dB and 50-18,000 Hz ±1.5 dB, respectively. | ||
| + | at 19 cm/s : 30-20,000 Hz +2/-3 dB or 50-15,000 Hz ±1.5 dB | ||
| + | ** at 9.5 cm/s: 30-16,000 Hz +2/-3 dB or 50-10,000 Hz ±1.5 dB | ||
| + | Signal-to-noise ratio: (over band, CCITT, curve C): | ||
| + | ** at 38 cm/s >61 dB | ||
| + | ** at 19 cm/s >61 dB | ||
| + | ** at 9.5 cm/s >58 dB | ||
| + | * External voltage spacing: n.a. | ||
| + | * Distortion: <2 % (0 VU, 19 and 38 cm/s), <3 % (0 VU, 9.5 cm/s), | ||
| + | * Equalization: NAB (record + playback) or IEC (playback) | ||
| + | * Crosstalk attenuation: Mono: >60 dB, Stereo: >45 dB (1 kHz) | ||
| + | * Erasure attenuation: ≥80 dB | ||
| + | * Premagnetization and erasure frequency: 120 kHz | ||
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| + | '''Special Features''' | ||
| + | * Additional plug-in power amplifier 2 × 8 watts at 8 Ω; (accessories). | ||
| + | * Versions with wooden cabinet, case and as built-in chassis. | ||
| + | Versions with Dolby-B-NRS , ORF (studio version HighSpeed , symm. In/Out) | ||
| − | == | + | |
| − | * | + | == Remarks == |
| + | * Other models of the same series: | ||
* [[Revox A 700]] | * [[Revox A 700]] | ||
| − | * | + | * Successor [[Revox B 77]] |
| + | |||
| + | |||
| + | * Tuner: | ||
| + | * [[Revox A 76]] | ||
| + | |||
| + | |||
| + | * Amplifier: | ||
| + | * [[Revox A 78]] | ||
| − | == | + | == Pictures == |
| − | * | + | * Extract from brochure: Revox A 77 |
| − | [[ | + | [[File:Revox A-77-Prospekt-1.jpg]] |
| − | * | + | * Extract from brochure: Revox A 76, A 77, A 78 |
| − | [[ | + | [[File:Revox A-76-77-78-Prospekt-1.jpg]] |
| − | == | + | == Test reports == |
* [http://www.theimann.com/Analog/A77/A77vsPCM/A77_Punkte.html A77 Dolby], HiFi-Stereophonie 1983-05 (Arndt Klingelnberg) | * [http://www.theimann.com/Analog/A77/A77vsPCM/A77_Punkte.html A77 Dolby], HiFi-Stereophonie 1983-05 (Arndt Klingelnberg) | ||
| − | * [http://www.theimann.com/Analog/A77/A77vsPCM/index.html A77 | + | * [http://www.theimann.com/Analog/A77/A77vsPCM/index.html A77 analogue reel-to-reel tape recorder compared to digital recording PCM], HiFi-Stereophonie 1982-12ff (Arndt Klingelnberg) |
== Links == | == Links == | ||
| + | * [http://www.tonbandmuseum.info/revox-die-a77.html (Illustrated) Information about the A77 at the Tape Museum] | ||
* [http://www.analogstereo.com/revox_service_manuals.htm Revox A77 service manual] | * [http://www.analogstereo.com/revox_service_manuals.htm Revox A77 service manual] | ||
| − | * [http://www.revox.com/de/classics/tonbandmaschinen.html | + | * [http://www.revox.com/de/classics/tonbandmaschinen.html tape machines on Revox website] |
| − | [[ | + | [[Category:Tape machines]] |
Latest revision as of 13:12, 2 May 2020
Data[edit]
General
- Manufacturer: Revox
- Model: A 77 Mk I MK II, MK III and Mk IV
- Years of manufacture: 1967-1981
- Manufactured in: Germany / Switzerland
- Colour: grey, silver, housing walnut
- Remote control: Cable remote control 5 m or 10 m (accessories)
- Power consumption: 70 W / with power amplifiers max. 100 W
- Dimensions, horizontal): 413 mm × 359 mm × 215 mm (W × H × D)
- Weight: approx. 15 kg
- Original price approx.: 1700 DM (list price)
Connections
- Number of outputs: 3
- 2 × output (Cinch): 2.5 V / Ri 600 Ω
- 1 × Radio (DIN): 1.2 V / Ri 2.5 kΩ
- 1 × Phones (jack 6.3 mm): 200-600 Ω
- Number of inputs: 3
- 2 × MIC (jack 6.3 mm / Cinch) Low: 0.15 mV / 50-600 kΩ / High: 2.5 mV / up to 100 kΩ
- 2 × Aux (Cinch): 35 mV at 1 MΩ
- 1 × Radio (DIN): 2.5 mV at 33 kΩ
Technical Data
- Max. Coil diameter: 26.5 cm (10.5")
- Drive: 3 external rotor AC motors (direct drive)
- Tone motor controlled via highly stable oscillator and tachogenerator
- 2 asynchronous winding motors
- Heads: 3
- Tracks: 2 or 4, depending on version
- Tape speeds: 9.5 and 19 or 19 and 38 cm/s, depending on the version, ±0.2
- Slip: <0.2 %
- Synchronization fluctuations:
- Pitch variations:
- at 38 cm/s <±0.06 %
- at 19 cm/s <±0.08 %
- at 9.5 cm/s <±0.1 %
- Overall frequency response:
- at 38 cm/s : 30-22,000 Hz +2/-3 dB and 50-18,000 Hz ±1.5 dB, respectively.
at 19 cm/s : 30-20,000 Hz +2/-3 dB or 50-15,000 Hz ±1.5 dB
- at 9.5 cm/s: 30-16,000 Hz +2/-3 dB or 50-10,000 Hz ±1.5 dB
Signal-to-noise ratio: (over band, CCITT, curve C):
- at 38 cm/s >61 dB
- at 19 cm/s >61 dB
- at 9.5 cm/s >58 dB
- External voltage spacing: n.a.
- Distortion: <2 % (0 VU, 19 and 38 cm/s), <3 % (0 VU, 9.5 cm/s),
- Equalization: NAB (record + playback) or IEC (playback)
- Crosstalk attenuation: Mono: >60 dB, Stereo: >45 dB (1 kHz)
- Erasure attenuation: ≥80 dB
- Premagnetization and erasure frequency: 120 kHz
Special Features
- Additional plug-in power amplifier 2 × 8 watts at 8 Ω; (accessories).
- Versions with wooden cabinet, case and as built-in chassis.
Versions with Dolby-B-NRS , ORF (studio version HighSpeed , symm. In/Out)
Remarks[edit]
- Other models of the same series:
- Revox A 700
- Successor Revox B 77
- Tuner:
- Revox A 76
- Amplifier:
- Revox A 78
Pictures[edit]
- Extract from brochure: Revox A 77
- Extract from brochure: Revox A 76, A 77, A 78
Test reports[edit]
- A77 Dolby, HiFi-Stereophonie 1983-05 (Arndt Klingelnberg)
- A77 analogue reel-to-reel tape recorder compared to digital recording PCM, HiFi-Stereophonie 1982-12ff (Arndt Klingelnberg)