gru 4, 2024

REVOX B-77M KII po reanimacji i odnowie

Revox B77

3 Motor 2 Speed Stereo Reel to Reel Tape Recorder (1978-85)

Specifications

Track system: stereo system

Motor: 2 x reel, 1 x capstan

Reel size: up to 10.5 inch reel

Tape speeds: 3 ³⁄₄ 7 ¹⁄₂ ips

Wow and flutter: 0.08% (7 ¹⁄₂ ips)

Frequency response: 30Hz to 20kHz (7 ¹⁄₂ ips)

Signal to Noise Ratio: 67dB

Total harmonic distortion: 0.5%

Input: 40mV (line), 0.15mV (mic)

Output: 1.55V (line)

Semiconductors: 11 x IC, 1 x opto-coupler, 4 x triacs, 60 x transistors, 33 x diodes, 5 x LED, 2 x full wave rectifi

Dimensions: 563 x 475.5 x 233mm

Weight: 17kg

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gru 4, 2024

REVOX B710 MK II

General

Manufacturer: Revox
Model: B 710 MK I
Years of manufacture: 1981 – 1982
Made in: West Germany
Color: silver
Remote control: yes, cable remote control optional
Power consumption:
Housing dimensions (WxHxD): 452 x 151 x 352 mm.
Weight: approx. 10 kg
Original price approx.: 2’500 DM

Connections

Number of inputs:
- Sensitivity for 0 dB level control:
  - MIC (unbalanced) 0.35 mV/10 kOhm
  - LINE 70 mV/220 kOhm
Number of outputs:
Sensitivity for 0 dB = 200 nWb / m
- LINE OUTPUT: max. 0.775 V, 390 Ohm, max. 1.5 kOhm (RL > 10 kOhm), adjustable with level control -26 dB

Headphones: max. 2.45 V, optimal for headphones of 200… 600 Ohm, separately adjustable via volume control

Technical data

Drive

4-motor double-capstan-drive

DC-winding motors controlled via yP
- 2 individually quartz-controlled direct-drive Capstan motors

7-segment display

Tape counter 4-digit, switchable to clock function Tape speed:4.76 cm/s
Tone pitch fluctuation

(according to DIN 45507) IEC 386: 0, 1 % for C60 and C90

Cassettes that can be used
- C46 to C120 technical data guaranteed up to C90

Rewinding times approx. 45 s for C60 approx. 65 s for C90

Noise reduction system

Dolby B, C, MPX filter switchable

Playback equalisation
- 3180 + 120ys for IEC I
- 3180 + 70 ys for IEC II + IV,
- manually selectable or automatic via cassette encoding Tape output control:
- 200 nWb/m for 0 dB indication on peak meter.

distortion: at 315 Hz; 0 dB

- I: better than 0.8%
- II: better than 1.5%

IV: better than 1.5% Frequency Response: (measured over band at -20 dB)

I: 30 Hz-18 kHz + 2/-3 dB
II: 30 Hz-20 kHz + 2/-3 dB

IV: 30 Hz-20 kHz + 2/-3 dB

Silent-to-noise ratio: > 72 dB
Crosstalk attenuation: at 1 kHz: better than 40 dB
Pre-magnetization & extinction frequency: 105 kHz
Overload immunity of all inputs

40 dB (1: 100)

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paź 5, 2024

Revox A77 po remoncie

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)

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wrz 21, 2024

REVOX A77 po rewitalizacji

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)

More Details

wrz 7, 2024

General

Manufacturer: Revox
Model: A 77
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)

More Details

lip 7, 2024

Revox PR 99 mk III

Uzupełnienie brakującej rolki dociskowej, kalibracja toru zapis/odczyt, konserwacja, czyszczenie mechanizmu.

Magnetofon Revox PR99 wyposażony jest w elektronicznie regulowany mechanizm napędowy z 3 silnikami, 2 prędkości o zakresie regulacji prędkości od -30% do +50%, elektroniczną zmianę prędkości, zintegrowaną logikę sterowania z czujnikiem ruchu taśmy, bezstykowe przełączanie wszystkich silników, licznik taśmy w czasie rzeczywistym, mierniki VU oraz opcjonalne sterowanie zdalne.

Professional Stereo Reel to Reel Tape Recorder
Track system: 2-channel, stereo system
Motor: 2 x reel, 1 x capstan
Reel size: up to 10.5 inch reel
Equalization: NAB, CCIR
Tape speeds: 7 1⁄2 15 ips
Wow and flutter: 0.06% (15 ips)
Frequency response: 30Hz to 22kHz (15 ips)
Signal to Noise Ratio: 66dB
Total harmonic distortion: 1%
Crosstalk: 45dB
Dimensions: 483 x 399 x 234mm
Weight: 18.5kg
Note: 7.5 and 3.75 ips capable

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cze 30, 2024

Neon Capital Revox B77 & High-Com II

Revox B77 w zestawieniu z Nakamichi High-Com II naprawdę daje czadu 🙂

Revox B77
Specifications
Track system: stereo system
Motor: 2 x reel, 1 x capstan
Reel size: up to 10.5 inch reel
Tape speeds: 3 3⁄4 7 1⁄2 ips
Wow and flutter: 0.08% (7 1⁄2 ips)
Frequency response: 30Hz to 20kHz (7 1⁄2 ips)
Signal to Noise Ratio: 67dB
Total harmonic distortion: 0.5%
Input: 40mV (line), 0.15mV (mic)
Output: 1.55V (line)
Semiconductors: 11 x IC, 1 x opto-coupler, 4 x triacs, 60 x transistors, 33 x diodes, 5 x LED, 2 x full wave rectifi
Dimensions: 563 x 475.5 x 233mm
Weight: 17kg

Nakamichi High-Com II
Specifications
Noise Reduction System (1981)
Channels: 2
Input sensitivity: 60mV
Output level: 600mV
Noise reduction system: High Com
S/N improvement: 20-25dB (High Com)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.1%
Dimensions: 482 x 82 x 270mm
Weight: 5kg

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cze 29, 2024

Revox A77 po rewitalizacji

Dymił, nie grał, wskaźnik lewy nie działał, potencjometry trzeszczały.
Został poddany rewitalizacji.
Przeszedł ogólny przegląd, wymianę elementów elektronicznych, poprawę mechaniki. Przegląd głowic, wymianę elementów gumowych, pasków, rolek. Pełną kalibrację i regulacje.