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gru 4, 2024

GX-400D AKAI gotowy do klienta, gdyby nie „Pracownia Dziadka” nie byłoby tak super efektu.

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gru 4, 2024

AKAI GX- 32 po nieudolnym rozebraniu

General

• Manufacturer: Akai
• Model: GX-32
• Type: Cassette Tape Deck
• Years of manufacture: 1988 – 1990
• Made in: Japan
• Color: Silver, Black
• Remote control:
• Dimensions: 425 x 112 x 352 mm
• Weight: approx. 6.2 kg
• Original price approx.: 799,- DM

Connections

• Number of inputs: 1
  • LINE: 70 mV / 47 kOhm
  • CD/DAT DIRECT IN: –
• number of outputs: 2
  • LINE: 388 mV / 2.0 kOhm
  • headphones: 1.3 mV (8Ω)

Specifications

• Audio heads:
  • Double Super GX head for recording and playback 1x.
  • Erase head x1
• Motors: Electronic speed-controlled DC motor for drive shaft drive 1x
• Synchronous speed variation: 0.05% (JIS), 0.09% (DIN).
• Belt types: Normal, CrO₂ and Metal.
• Frequency response:
  • Normal 25Hz to 17kHz ±3dB.
  • CrO₂ 25Hz to 18kHz ±3dB

Metal 25Hz to 20kHz ±3dB

• Total harmonic distortion: <0.9% (for metal).
• Signal-to-noise ratio:
  • 59dB (measured across band at recording peak level).
  • Dolby NR Type B on: improved by 5dB at 1kHz, 10dB above 5kHz
  • Dolby NR Type C on: improved by 15dB at 500Hz, 20dB at 1kHz to 10kHz
• Auto-Reverse: no
• Title search: IPLS function
• Dolby: B, C
• MPX filter: yes
• BIAS (bias): -20 – +20dB
• Fader: no
• Pitch control: no
• CD synchro recording: no
• Auto Mute: 4sec

gru 4, 2024

Akai X-201D kolejny

General

• Manufacturer: Akai
• Model: X-201 D
• Years of manufacture: 1972 – 1976
• Made in: Japan
• Color: silver/black, case wood walnut
• Type: Autoreverse coil tape
• Remote control:
• Power Consumption:
• Dimensions (WxHxD): 358 x 358 x 227 mm.
• Weight: 17 kg
• Original price approx.: 1’298 DM (1973)

Connections

• Number of inputs: 3
  • Microphone: 0.5 mV, 5 kOhm

Line: 60mV, 180 kOhm

• • DIN:
    • Low: 5mV
    • High: 50mV
• Number of outputs: 3
  • Line: 1.23 V
  • Din: 400 mV
  • Headphone: 30mV, 8 Ohm

Technical Data

• Coil diameter: 18 cm
• Drive: 3 motors

1x Hysteresis-Synchron Capstan-Motor

• • 2x winding motors, external rotor
• Heads: 3
• Tracks: 4
• Tape speeds:
  • 4.75 cm/s
  • 9.5 cm/s
  • 19 cm/s
• Synchronization fluctuations:
  • < 0.20% RMS (4.75 cm/s)
  • < 0.12% RMS (9.5 cm/s)
  • < 0.08% RMS (19 cm/s)
• Pitch fluctuations:
• Overall frequency response:
  • 30Hz-9kHz ±3 dB (4.75 cm/s).
  • 30Hz-19kHz ±3 dB (9.5 cm/s)
  • 30Hz-26kHz ±3 dB (19 cm/s)
• Signal-to-noise ratio: > 58 dB
• Signal-to-noise ratio:
• Total harmonic distortion: < 2% (1 kHz)
• Entzerrung: nach NARTB
• Übersprechdämpfung:
  • Mono: >65 dB

Stereo: > 45 dB

• Cancellation attenuation: < 70 dB
• Premagnetization and erasure frequency: 100 kHz
• Rewind time: 75 seconds for 370m band

Special Features

• Crossfield audio head system: With the crossfield audio head system, the so-called bias magnetization of the audio tape is not – as is generally the case – performed by the recording/playback head, but by a separate audio head (bias head) located opposite the aforementioned recording/playback head. This pickup head arrangement allows signal modulation over the entire audio frequency spectrum without any interference from bias magnetization as is the case with other pickup head systems.
• Autoreverse
• Magnetic brakes
• Switchable equalization
• Auto stop and auto power off
• Vertical and horizontal operation possible
• Tape type selector switch
• Autoreverse with continuous operation

gru 4, 2024

AKAI GXC-710D

General

• Manufacturer: Akai
• Model: GXC-710 D
• Type: Cassette Tape Deck
• Years of manufacture: 1976 – 1978
• Made in: Japan
• Color: Silver, Cabinet real wood
• Remote control:
• Power consumption: 23 W
• Dimensions: 440 x 142 x 304 mm (WxHxD)
• Weight: 8.8 kg
• Original price approx.: 950 DM

Connections

• Number of inputs:
  • Line In: 70 mV, 100 kOhm

Line In DIN: 3 mV

• • Microphone 1, 2: 0.3 mV, 600 Ohm – 10 kOhm
• Number of outputs:
  • Line Out: 775 mV, 20 kOhm
  • Line Out DIN: 0.55 mV
  • Headphones: 50 mV, 8 Ohm

Technical Data:

• track system: 4 track, 2 channel stereo
• Audio heads: 2
  • 1x GX- recording / playback head

1x erase heads

• Motor: 1x, 4-pole hysteresis synchronous motor
• Speed: 4,75 cm/ s
• Synchronous speed: 0.08 % WRMS (NAB)
• Band types: LN, CrO2, FeCr
• Frequency response ± 3 dB:
  • Type I: 30 – 14,000 Hz

Type II: 30 – 16,000 Hz Type III: 30 – 17,000 Hz

• Distortion factor: 1.5 % (1 kHz, level 0)
• Signal-to-noise ratio:
  • Better than 54 dB (Dolby off).
  • Dolby on: Improvement up to 10 dB above 5,000 Hz.
• Rewind time (C 60): 70 s
• Cancellation attenuation: 70 dB
• Premagnetization: 60 kHz
• Auto reverse: no
• Title search: no
• Dolby NR: yes

Special features:

• Solid, heavy construction
• Akai ADR (Automatic distortion reduction)
• Peak level indicator
• Memory rewind
• Real wood cabinet

gru 4, 2024

Akai GX-210D

General

• Manufacturer: Akai
• Model: GX 210 D
• Years of manufacture: 1975 – 1977
• Made in: Japan
• Color: Silver
• Remote control: no
• Power consumption:
• Dimensions: 368 x 371 x 227 mm (WxHxD).
• Weight: 15,4 kg
• Original price approx.: 1’350 DM

Connections

• Number of outputs: 3
  • DIN (0,6V)
  • Line (1.228V)
  • Headphone (30 mV, 8 Ohm)
• Number of inputs: 3
  • Microphone (0.3mV/5kOhm)
  • Line (60mV/180kOhm)
  • Radio (6-60mV/27-150kOhm)

Technical Data

• Max.coil diameter: 18 cm
• Drive: 3 motors
• Heads: 1x GX take-up, 1x GX playback, 1x erase head
• Tracks: 4
• Tape speeds: 9.5 and 19 cm/s
• Slip:
• Synchronous oscillations:
  • at 9.5 cm/s: ±0,15%
  • at 19 cm/s: ±0,09%
• Pitch fluctuations:
• Overall frequency response:
  • at 9.5 cm/s: 40 – 20,000 Hz
  • at 19 cm/s : 30 – 25,000 Hz
• Signal-to-noise ratio: >54dB
• External signal-to-noise ratio:
• Distortion factor:
  • <1,5% bei 1000Hz und 0dB
• Crosstalk: >45dB (stereo), >67dB (mono).
• Suppression loss:
  • at 19 cm/sec: >72dB
• Premagnetization and extinction frequency: 102kHz ±5kHz

Special Features

• Reverse playback